Sapphire Energy is Canadian-owned and operated from Surrey, British Columbia. Most stocked products ship from BC, but we may also fulfill through partner warehouses in Alberta, Ontario, or Nova Scotia when that gets the order to you more efficiently.

Because core inventory is stocked locally, we can usually confirm dimensions, compatibility, or included parts before an order leaves. If a listing is marked special-order or you need to know the exact shipping point, contact us before ordering.

We ship across Canada using carriers such as Canada Post, Purolator, UPS, and FedEx. Lithium batteries travel by approved ground service only, while non-battery products may have additional service options & speeds. Remote, rural, and oversized deliveries can take longer or require depot pickup, as well as may be subject to additional fees.

Delivery estimates depend on the destination, parcel size, and whether the shipment can move through the normal courier network. Batteries cannot be upgraded to air service. If you checkout with an incompatible shipping method, we will contact you to let you know.

Full terms and regional exceptions are listed in our Shipping Policy.

Most orders of $300 or more before tax receive free standard shipping within our regular service areas. Batteries also normally ship free. Remote locations, oversized products, solar panels, racking, and freight shipments may be excluded or require a custom quote; checkout shows the available options before payment.

Free shipping means the standard service selected by Sapphire; it does not necessarily include express delivery, tailgate service, inside delivery, or appointment delivery. Solar panels and long rail are especially sensitive to carrier size limits, so contact us for a freight or pickup plan when ordering these types of products. Please note our checkout may not block you, and we will contact you to make arrangements if necessary.

See the Shipping Policy for the current threshold, exclusions, remote-area terms, and other details.

When in doubt, contact us for help.

We aim to dispatch most in-stock parcel orders within one business day after payment is confirmed. Batteries typically ship the following business day and reach most locations in approximately 1–5 business days. Large, custom-assembled, cut-to-length, special-order, or freight orders may need additional preparation time.

Tracking normally begins updating after the carrier performs its first scan. A label-created notification does not always mean the parcel is already moving (but it doesn't mean it's not!). For current processing and transit expectations, see the Shipping Policy.

Since we stock almost everything in our main warehouse, local pickup can be arranged in Surrey BC. This can be especially useful for solar panels, rails, or other oversized items.

Solar panels, and many of our racking products are also available from partner warehouses across the country.

If you'd like to pickup locally, please contact us before ordering and we can make arrangements for you.

Bring a suitable vehicle and a safe way to secure heavy batteries, panels, or rail. Product dimensions and weights should be checked in advance; solar panels must be supported and restrained so they cannot flex, slide, or catch wind during transport.

Contact us as soon as possible with your order number. We may be able to make changes before processing begins (including adding/removing/adjusting items already in your order), but cancellation is not guaranteed once an order has been packed or transferred to a carrier. Custom-cut, assembled, made-to-order, or special-order products cannot normally be cancelled after work or procurement has started.

Do not place a second “corrected” order unless we ask you to, as both orders may enter processing. The Refund Policy explains cancellation, return, and non-returnable-item conditions in full.

Applicable Canadian sales taxes are calculated from the shipping destination and displayed at checkout. Qualified resellers or tax-exempt purchasers should contact us before ordering with the required documentation; tax adjustments may not be possible after checkout.

Tax is not based on our Surrey location when an order is shipped elsewhere. Enter the complete destination at checkout to see the correct calculation before payment. If documentation is required for an exemption, arrange it before submitting the order.

Inspect the shipment before accepting it whenever practical. Note visible damage with the carrier, photograph the outer packaging and affected products, and keep all packing material. Then contact us promptly with the order number and a description of anything damaged or missing so we can help document and resolve the claim.

For concealed damage, photograph the item as it was packed before moving or installing it. Do not energize equipment that is cracked, wet, deformed, punctured, or has damaged terminals. Our Shipping Policy explains delivery issues, and the Refund Policy covers return conditions.

Lithium iron phosphate (LiFePO₄) is a rechargeable lithium chemistry designed for long cycle life, high usable capacity, low weight, and stable performance. A built-in Battery Management System (BMS) monitors the cells and disconnects charging or loads when operating limits are exceeded.

Compared with lead-acid, LiFePO₄ holds a relatively flat operating voltage and normally allows much more of its rated capacity to be used. It also does not need water top-ups or routine equalization. That flat voltage curve is useful for equipment, but it means a simple voltmeter is not a very accurate fuel gauge through the middle of the charge range.

For a practical comparison, read Lithium vs. Lead — Shifting Technology and Your Choices.

The best system voltage depends mainly on how much power you need to move and which DC appliances you plan to operate. As battery voltage increases, the current required to deliver the same wattage decreases. Lower current means less voltage drop, smaller cables, and less stress on terminals, fuses, busbars, disconnect switches, and charging equipment.

12V systems are common in RVs, boats, vans, trailers, and smaller off-grid installations. They work conveniently with widely available 12V lighting, pumps, refrigerators, and accessories. However, current becomes very high when powering large inverters or solar arrays, so heavy cabling and short battery connections are essential.

24V systems are a practical middle ground for cabins, larger RV systems, workshops, and inverter systems around 2,000–4,000W. They deliver the same power at approximately half the current of a 12V system. Native 12V equipment can still be used, but it requires a properly sized 24V-to-12V converter.

48V systems are generally preferred for larger off-grid, backup-power, and high-output inverter systems. They deliver the same power at approximately one-quarter the current of a 12V system. For example, a 3,000W load may draw roughly 260A from a 12V bank, 130A from a 24V bank, or 65A from a 48V bank after allowing for inverter losses.

Battery voltage also has a major effect on solar-system cost. A 1,200W array charging at approximately 14.2V could produce around 85A on the battery side of an MPPT controller. The same array would produce approximately 42A at 28.4V or only 21A at 56.8V. Higher-voltage systems can therefore use fewer or smaller MPPT controllers, smaller controller-to-battery cables, lower-current busbars, and less expensive fusing and distribution equipment. These savings become increasingly significant as array wattage and cable length increase.

The panel-side wiring is determined primarily by the solar array’s series and parallel configuration rather than battery voltage alone. The array’s cold-weather open-circuit voltage must remain below the MPPT controller’s maximum PV-input rating, while its operating current must remain within the controller and wiring limits.

Choose the system voltage before purchasing batteries, inverters, chargers, solar controllers, busbars, fuses, and disconnects. Every component must support the selected voltage, and a nominal 48V LiFePO₄ bank operates above 50V and may charge to approximately 57–58V. If you’re unsure which voltage is appropriate, contact us with your expected loads and charging sources and we’ll help you compare the options.

List each load in watts, multiply by its expected daily runtime, and add the results to estimate watt-hours per day. Divide by the battery system voltage to estimate amp-hours, then include reserve capacity for cloudy days, cold weather, conversion losses, and future loads. Our guide, How Much Battery Do I Need?, provides a practical starting point.

As a quick example, a 60W fridge operating for 12 equivalent hours uses about 720Wh per day. At 12.8V that is about 56Ah before allowing for inverter losses, cold conditions, or reserve. A 100Ah battery may cover one normal day, while two or more days without charging require proportionally more storage.

Start with Understanding Amps, Volts, Watts and Watt-Hours, then use our battery-sizing guide to turn the load list into a practical capacity.

Classic models provide the core LiFePO₄ benefits at the best value. Bluetooth models add phone-based BMS information. Self-heating models warm cold cells before charging, and high-output models use higher-current BMS and internal wiring for demanding loads. Compare the available lines on our Shop by Battery Feature page.

Choose features for the actual installation rather than assuming the most expensive model is automatically best. Bluetooth is valuable when the battery is hidden, self-heating is useful where charging below freezing is likely, and high-output construction matters when a large inverter or other heavy DC load would exceed a standard BMS rating.

Check both the inverter’s continuous DC demand and startup surge against the battery’s continuous and peak discharge limits. Also size the cables, fuse, and disconnect for the expected current. A large inverter can exceed the BMS limit even when the battery still has plenty of stored energy.

Estimate DC current with watts ÷ battery voltage ÷ inverter efficiency. A 2,000W load on a 12.8V battery at 90% efficiency is about 174A, before surge. That is why a “2,000W battery system” needs more than a 2,000W inverter—it also needs a battery and BMS capable of the current.

If batteries are paralleled, use balanced cabling so they share current. The combined bank rating does not help if one small cable, terminal, fuse, busbar, or disconnect becomes the bottleneck.

Often, yes, but it is not always a drop-in electrical replacement. Confirm that the charger, alternator charging method, solar controller, inverter low-voltage settings, cables, and fusing are suitable for LiFePO₄. Physical fit and terminal layout should also be checked before ordering.

Pay particular attention to older RV converters and alternators. A lead-acid charger may hold an unsuitable float voltage or run a desulfation cycle, while direct alternator wiring may allow excessive current. Lithium’s lower internal resistance changes how the entire charging system behaves.

Unless a product is specifically advertised for engine starting, no. Starting motors can demand very high surge current and should use a purpose-built starting battery. Sapphire deep-cycle batteries are intended for house loads, solar storage, electronics, and inverter use.

A high peak-current number on a deep-cycle BMS does not automatically make the battery suitable for cranking. Engine starting involves repeated, very short, high-current events plus alternator and vehicle-system behaviour that a starting battery is specifically designed to tolerate.

It is best to build a bank from batteries of the same voltage, model, capacity, age, and state of charge. Mixing batteries can create uneven current sharing and may cause one BMS to reach a limit before the others. Ask us before expanding an older bank or combining unlike batteries.

If adding capacity later, compare resting voltage, full-charge behaviour, internal resistance, and the older battery’s condition. Do not connect a fully charged battery directly in parallel with a discharged one; equalization current can be extremely high and is not controlled by the normal loads or charger.

Batteries ship partially charged. Inspect the battery and packaging, then complete a successful charge and discharge test before permanent installation. Follow the limits printed on the battery label and keep the original box and packing material until testing is complete in case a return is required.

Use a compatible charger and a known load, and watch for normal voltage, current, temperature, and BMS operation. For Bluetooth models, the initial State-of-Charge percentage may need a complete charge before it becomes meaningful. Our New Buyer’s Guide walks through the first-use checks.

Many models support parallel connections for more capacity and series connections for higher voltage, but limits vary by model. Confirm the allowed configuration on the battery label or product documentation before wiring. Use matching batteries and never exceed the stated series or parallel limit.

Parallel: positive connects to positive and negative to negative. Voltage stays the same while available amp-hours and current capability increase. Series: positive connects to the next battery’s negative. Voltage adds, but amp-hours stay the same.

A series bank requires every connected charger and load to support the higher total voltage. A parallel bank needs balanced cable resistance so each battery contributes evenly. Never use a midpoint connection from part of a series bank to power a lower-voltage load.

Yes. Fully charge each battery individually and confirm they are at nearly the same resting voltage before making parallel or series connections. Connecting batteries at significantly different voltages can produce a very high equalization current.

After the batteries rest, measure each one with the same meter. If voltages are not close, charge them separately rather than allowing the interconnect cables to equalize them. Make final connections with all charging sources and loads isolated.

Yes. The BMS protects the battery cells, while an external fuse or breaker protects cables and downstream equipment from short circuits and wiring faults. Install the main protection close to battery positive and size it for the cable and expected load, without exceeding equipment ratings.

A battery can deliver enough fault current to melt insulation or start a fire before a BMS reacts. Protect every conductor when its size is reduced or when it leaves an adequately protected distribution point. The main fuse should be close enough to battery positive that an accidental short cannot leave a long unfused cable energized.

Fuse sizing is based on the cable, continuous load, equipment instructions, and the fuse’s DC interrupt rating—not simply the battery’s BMS rating. See “How do I choose a fuse or breaker rating?” below for the sizing process.

The BMS may have detected low or high cell voltage, excessive charge or discharge current, a short circuit, or an unsafe temperature. Disconnect unnecessary loads, correct the cause, and check the Bluetooth app when available. Repeated shutdowns usually indicate a system sizing, wiring, setting, or equipment problem.

Start by removing the load and measuring voltage directly at the battery terminals. Then inspect the main fuse, disconnect, cable lugs, and polarity. If Bluetooth is available, record the protection message and individual cell voltages before clearing it; that information helps distinguish low charge from over-current or temperature protection.

For a battery that appears dead after deep discharge, read LiFePO₄ Under-Voltage Protection & Recovery before attempting repeated wake-up cycles.

Remove or correct the condition that triggered protection, then connect a compatible charger. A valid charging voltage normally wakes the BMS. If it does not recover, stop troubleshooting and contact us with the battery model, voltage readings, app screenshots, and details of what happened.

Do not repeatedly connect a large inverter or use another battery to “jump” the protected pack. A normal lithium charger with wake-up capability is the controlled first step. If the battery was stored empty, became unusually hot, is swollen, or will not accept a normal charge, stop and contact support.

Our under-voltage guide explains why the terminals can appear dead and how to approach recovery safely.

LiFePO₄ batteries can usually discharge below freezing within the limits on their label, but the cells must not be charged while too cold. Low-temperature charge protection blocks unsafe charging. A self-heating model can use incoming charge power to warm the cells before charging begins.

The relevant temperature is the cell temperature inside the battery, not the outdoor forecast. A cold-soaked battery may remain below freezing after the air warms up. Give it time to warm, or use an insulated enclosure and a self-heating model designed for the conditions.

See Lithium Batteries & Cold Weather for practical installation ideas.

They do not vent gas during normal charging like flooded lead-acid batteries, so active gas ventilation is generally unnecessary. The installation should still stay dry, avoid excessive heat, allow normal heat dissipation, protect terminals from accidental contact, and leave room for service.

Mount the battery securely so it cannot shift, protect both terminals from dropped tools and conductive objects, and keep it away from direct heat sources. Do not install it in standing water or in a sealed space that can become extremely hot.

Disconnect parasitic loads and store the battery partially charged in a cool, dry location. Do not leave it fully discharged. Check it periodically during long storage, and recharge before the voltage approaches the minimum listed for the battery.

“Disconnected” must mean that small parasitic loads—displays, detectors, inverters, converters, and monitors—cannot continue draining the battery. Check resting voltage periodically and recharge before it approaches the low-voltage region.

For seasonal equipment, follow our detailed Winter Storage Guide.

There is no water to add. Periodically inspect the case, cables, protective devices, and terminal connections; keep the battery clean and dry; and verify that charging settings remain appropriate. Do not retighten terminals beyond the torque specified for the model.

After initial installation, operate the normal heavy loads and inspect the complete current path. Look for loose hardware, discoloration, soft or melting insulation, and connectors that become noticeably warmer than the cable around them. A thermal camera is helpful, but careful touch after power is removed can also reveal abnormal heating.

Recheck the installation after the first few operating cycles and periodically thereafter, especially in vehicles and boats where vibration can loosen or fatigue connections.

Current JBD-equipped Sapphire batteries use the app identified on the battery QR label and on our Downloads page. Older batteries may use XiaoXiangElectric. Use the app link associated with your battery rather than choosing an unrelated app with a similar name.

Connect from inside the battery app, not from the phone’s general Bluetooth pairing screen. If several batteries appear, use the MAC-address label to identify the correct one. Screens and menu names can differ between Android, iOS, and app versions.

Make sure the battery is awake, Bluetooth is enabled, and the phone is close to the battery. Metal compartments reduce range. Allow Bluetooth or nearby-device permissions, close other connected phones, and apply a small charge or load if the battery has been inactive. Many BMS modules accept only one connection at a time.

On Android, nearby-device or location permission may be needed for Bluetooth scanning even though the app is not using your location for navigation. Restarting the app or phone can clear a stale connection. Do not change password, capacity, calibration, or protection settings merely to solve a connection problem.

The code identifies the battery’s Bluetooth module so the app can select the correct battery, especially when several are nearby. Scanning this code does not pair the battery through the phone’s regular Bluetooth settings; connection is made inside the battery app.

Keep a copy of the MAC label with the battery paperwork or installation records. In a multi-battery bank it prevents connecting to the wrong pack while troubleshooting and lets you label each battery consistently.

SoC is the estimated State of Charge. ChgMos and DisMos show whether the BMS is allowing charging and discharging. Protection identifies an active protective shutdown, while Balance shows when the BMS is equalizing cell voltages. The app manual on our Downloads page explains the screens in more detail.

When ChgMos or DisMos is off, look for the active protection reason before forcing it back on. Cell voltage, pack temperature, and current at the moment of the event usually explain the shutdown better than the State-of-Charge percentage alone.

BMS State of Charge is an estimate that can drift when the battery has not completed a full charge or when tiny continuous loads are difficult to measure. A full normal charge helps resynchronize the estimate. Voltage alone is also a poor mid-range State-of-Charge indicator for LiFePO₄ because its discharge curve is very flat.

For a useful reset, charge until the charger completes its normal lithium cycle and current tapers, then allow the BMS time to recognize “full.” Do not manually change capacity or reset counters unless the manual for that BMS instructs you to do so.

If accurate day-to-day energy accounting matters, install a shunt. It measures everything entering and leaving the whole bank, including loads that one battery’s internal BMS cannot see.

Use a shunt when you want accurate whole-system energy tracking, especially with multiple batteries or equipment that does not have built-in Bluetooth. All charging and load negatives must pass through the shunt for accurate readings. Browse battery monitors, including Sapphire BM01/BM02 and Victron SmartShunt options.

The battery side of the shunt should normally have only the battery-bank negative connection. Chargers, inverters, DC distribution, and chassis/system negative connect on the load side. Any negative cable that bypasses the shunt creates unmeasured current and inaccurate State of Charge.

They measure current at different points and may use different capacity settings, synchronization rules, and measurement thresholds. Confirm the programmed battery capacity, fully charge and synchronize the shunt, and verify that no negative cable bypasses it. Small differences are normal; large differences usually indicate setup or wiring issues.

Compare the readings while a moderate, steady load is running. If one device shows zero or a very different current, look for a bypassed shunt connection or an individual battery that is carrying more current than its neighbours. Compare percentages only after both monitors have been synchronized at a known full charge.

An AC charger converts shore, household, or generator power into controlled DC charging. A solar charge controller regulates the changing DC output from solar panels. Many off-grid systems use both, connected to the same battery bank with suitable wiring and protection.

Both devices can be connected to the same properly distributed battery bank, and both may charge at once. Their combined possible output must stay within the battery’s charge-current limit and the shared wiring, busbars, and fuses must be sized for the combined current.

Use the charge limits printed on the battery label or listed in its current documentation. For many 12V Sapphire LiFePO₄ batteries, about 14.2V provides a practical full charge without routinely pushing to the absolute upper limit, but settings must be scaled and confirmed for the specific battery voltage and model.

Disable equalization and automatic desulfation. Absorption time should not be excessively long, and long-term float should remain within the battery manufacturer’s limit. In a 24V system, nominal 12V settings are doubled; in a 48V system they are quadrupled—but always confirm against the actual label or manual.

A higher voltage is not automatically a better or faster charge. Pushing to the absolute maximum can cause individual cells to reach protection early, particularly when the bank is cold or not fully balanced.

Possibly, if it has appropriate fixed or programmable voltages and does not use automatic equalization, desulfation pulses, or other modes that exceed the battery limits. A dedicated LiFePO₄ profile is preferred. Compare the charger’s complete charge behaviour—not just its advertised voltage.

Watch an entire charge cycle with a meter before trusting an unknown charger. Check its peak voltage, how long it remains there, and what it does after “full.” If the charger periodically jumps to a high conditioning voltage, replace it or use a verified lithium mode.

Choose a charger that stays within the battery’s maximum charge-current rating and suits the available AC source. A larger charger reduces recharge time but requires more AC input and heavier DC wiring. Parallel banks may accept more total charge current when wired correctly.

Approximate charge time by dividing the amp-hours to replace by charger amps, then add time for tapering and loads. Replacing 100Ah with a 20A charger takes at least five hours in ideal conditions; a fridge or inverter running during charging makes it longer.

Keep the charger’s wiring short and size both conductors for current and voltage drop. Protect the positive conductor as required by the charger instructions and battery-system design.

A properly sized DC-DC charger is normally recommended. It controls current, applies an appropriate LiFePO₄ profile, accommodates voltage drop and smart alternators, and helps protect the alternator from sustained high demand. Direct connection may overload the alternator or charge poorly.

Choose the DC-DC charger from the alternator’s realistic spare capacity, not only the battery’s maximum charge rating. The input side can draw more current than the charger’s output rating when stepping voltage up or compensating for losses, so both input and output cables require correct sizing and protection.

Only if the specific unit is designed as a step-up or step-down charger for those input and output voltages. A 12V-to-24V charger is different from a 24V-to-12V converter. Confirm the exact model number, direction, isolation, and charging function before ordering.

Also distinguish a charger from a fixed-voltage converter. A charger follows a battery charging profile; a converter is intended to power loads at another voltage. Some Victron Orion models charge batteries, while others are DC-DC converters with similar-looking names.

Yes. Connect a compatible AC battery charger or inverter/charger to a stable generator supply. Make sure the generator can support the charger’s input demand and any simultaneous loads. Some inverter/chargers allow the AC input-current limit to be reduced for smaller generators.

Check for poor generator waveform or voltage regulation if the charger repeatedly disconnects. With a small generator, reduce the charger or inverter/charger input-current limit so other AC loads do not overload the source. Never connect generator output directly to a battery.

Yes. This is normal in RV, marine, backup, and solar systems. Charging sources supply the active loads first in practical terms, with remaining current charging the battery. Ensure the combined equipment is wired and protected for the maximum possible current.

The battery monitor may show only the net current. For example, a 30A charger and a 10A load produce about 20A of battery charging current. This is normal and explains why the charger’s display and battery-app current may not match.

When the cells are below the safe charging temperature and a suitable charging source is available, internal heaters warm the cells before charging is allowed. Heating consumes some incoming power and can extend charge time. It does not normally heat the battery continuously or use stored energy without a charging source.

Insulation helps because the heater warms the cells, not the whole compartment. Shield the battery from direct wind and cold metal surfaces. Confirm that the available charger can supply enough current for heating and still complete the charge in the available time.

For more cold-weather detail, see our cold-weather battery guide.

Start with daily energy use in watt-hours, then account for seasonal sun hours, panel orientation, shading, controller losses, and the desired recharge time. Loads that run in winter or through several cloudy days usually need more panel and battery capacity than a simple summer calculation suggests.

A useful first estimate is daily watt-hours ÷ realistic peak-sun-hours ÷ system efficiency. If loads use 1,000Wh per day, four effective sun-hours and an 80% overall allowance suggests at least about 313W of panel. Winter sun, flat mounting, shade, and cloudy-day recovery can justify substantially more.

Start with Understanding Amps, Volts, Watts and Watt-Hours and our battery-sizing guide. Browse the Sapphire blog for additional real-world solar examples, or send us your load list and location for help sizing the array.

An MPPT controller converts excess panel voltage into additional charging current and allows more flexible array voltage. PWM controllers are simpler and economical when panel and battery voltages are closely matched. MPPT is generally the better choice for larger arrays, colder conditions, or longer panel-wire runs.

With PWM, a higher-voltage panel is effectively pulled toward battery voltage, so part of its potential power may be unused. MPPT electronically tracks the panel’s efficient operating point and converts the extra voltage into charging current.

Read Solar Charge Controllers: PWM vs. MPPT for diagrams and practical examples.

Check four items: battery voltage, maximum panel open-circuit voltage (Voc), maximum array short-circuit or operating current as required by the manufacturer, and maximum charging output. Account for cold-weather Voc increase and never exceed the controller’s PV input limit. Browse our solar charge controllers or ask us to verify an array.

For voltage, add the Voc of panels in series and apply the manufacturer’s cold-temperature correction. For output current, array watts divided by battery charging voltage gives a useful estimate. Some MPPT controllers allow controlled PV oversizing, but only within their published limits.

Example: two 50V Voc panels in series are a 100V array before cold correction, so they do not belong on a controller with a 100V absolute PV limit. Leave adequate design margin rather than treating the nameplate limit as a target.

Series wiring raises voltage while current remains similar, which reduces voltage drop and cable size. Parallel wiring raises current while voltage remains similar and may tolerate uneven shading better. The final arrangement must stay within the controller’s voltage and current limits in all expected temperatures.

Example: two 40V, 10A panels in series are approximately 80V at 10A; in parallel they are approximately 40V at 20A. Use Voc for the controller’s maximum-voltage check and Isc or the manufacturer’s required current calculation for conductor and protective-device sizing.

Sometimes, but electrical mismatch can reduce output. Panels in series should have closely matched current; parallel strings should have closely matched operating voltage. Compare Voc, Vmp, Isc, and Imp—not just wattage. Separate controllers are often the cleanest solution for substantially different panels or orientations.

In series, the lowest-current panel tends to limit the string current. In parallel, branches operate at a shared voltage, so a substantially different Vmp can pull one panel away from its best operating point. Never parallel strings with different series counts unless their operating voltages are genuinely compatible.

Even a small shadow can reduce the output of a panel or an entire series string. Bypass diodes help but do not eliminate the loss. Avoid vents, antennas, rails, trees, and neighbouring panels casting shadows, and consider separate strings or controllers for surfaces with different shading.

Plan around how shadows move through the entire day and across seasons. A roof vent that misses the array at noon may shade it every winter morning. When unavoidable, separate shaded and unshaded groups onto independent MPPT inputs or controllers when the equipment supports it.

Rigid glass panels are usually best for permanent installations and long service life. Flexible panels suit curved or weight-sensitive surfaces but need careful mounting and cooling. Folding panels are convenient for portable use. Bifacial panels can gain output from reflected light when the rear surface remains exposed.

For any panel, check Voc, Vmp, Isc, Imp, dimensions, weight, connector type, and mechanical mounting instructions. “12V panel” and “24V panel” are informal application labels; the actual electrical specifications determine controller compatibility.

Connector shape does not guarantee electrical polarity, especially on adapters and portable-power equipment. Verify positive and negative with a meter before connecting panels, controllers, or power stations. Reverse polarity can damage equipment even when the connectors physically fit.

Set the meter to DC volts and probe the exposed output safely without shorting the contacts. A negative reading means the probes are reversed. Mark unusual adapters clearly so polarity is verified once and remains obvious later.

Portable power stations use several inputs that look similar but are not interchangeable. See our Solar Connector Guide for Power Stations.

Normally, no. Use a charge controller matched to the panel array and battery. The controller regulates voltage and current and provides the correct charging profile. A direct connection can overcharge the battery or operate unpredictably.

The exception is a product that already contains its own regulator and is explicitly intended for direct battery connection. A bare panel with MC4 leads is not a battery charger by itself, even if its marketing calls it a “12V panel.”

Protection depends on array configuration and equipment instructions. Parallel strings may require individual string protection; a PV disconnect or breaker can provide isolation; and the controller-to-battery cable needs protection near battery positive. Use DC-rated devices with voltage and interrupt ratings suitable for the circuit.

PV DC arcs are harder to extinguish than AC arcs. Do not substitute an AC-only breaker. Respect polarity on polarized DC breakers, use enclosures and cable glands suited to the environment, and provide a safe way to isolate both the array and battery side for service.

Add the running wattage of loads that may operate together, then check the largest startup surge from motors, compressors, pumps, microwaves, and power tools. Confirm the battery, BMS, cable, fuse, and disconnect can supply the resulting DC current. Avoid greatly oversizing an inverter because larger models often have higher idle draw.

At 12V, every 1,000W of AC load can mean roughly 90A of battery current after losses. A 3,000W inverter therefore needs a very capable battery bank and short, heavy cables even if the large load runs only occasionally.

Use the inverter manufacturer’s specified fuse and minimum cable size, then verify voltage drop for the actual run. Also check whether the inverter rating is in watts or volt-amps (VA), and whether it is continuous or peak.

Pure sine-wave output is recommended for electronics, variable-speed motors, appliances, audio equipment, chargers, and anything sensitive or uncertain. Modified sine-wave models may run simple resistive loads but can cause heat, noise, poor performance, or incompatibility.

If the load contains a motor, transformer, electronic power supply, timer, control board, dimmer, or audio circuit, choose pure sine wave. The modest purchase-price saving of modified sine wave is rarely worth diagnosing appliance noise or heat later.

An inverter converts battery DC into AC power. An inverter/charger also charges the battery from AC input and often includes an automatic transfer switch that passes shore or generator power through to the loads. Confirm the exact model because features and transfer ratings vary.

An automatic transfer switch changes the AC loads from inverter power to shore or generator power when acceptable AC input is present. It does not remove the need for correctly sized AC overcurrent protection, DC battery protection, grounding, and configuration.

The electronics remain active to create AC output, so every inverter has an idle or no-load draw. Search or eco modes can reduce consumption but may not detect very small loads. For systems that sit idle for long periods, remote switching or turning the inverter off can save meaningful energy.

Multiply the idle draw by 24 hours to see its real effect. A 20W idle load consumes 480Wh per day—roughly 38Ah from a 12.8V battery before conversion losses. Idle consumption can therefore rival a refrigerator in a lightly used system.

At the same power, a 24V inverter draws about half the DC current of a 12V unit. This becomes valuable for larger inverters, longer cable runs, and higher continuous loads. The battery bank and charging equipment must all support 24V, with converters used for any remaining 12V loads.

Decide early: changing system voltage later usually means replacing the inverter, chargers, battery arrangement, and some DC equipment. For modest mobile systems with many 12V loads, staying at 12V may still be simpler despite the higher inverter current.

Yes. MultiPlus and MultiPlus-II models combine an inverter, battery charger, and AC transfer function, but voltage, output, charger current, transfer rating, certifications, and programming features differ by model. Check the exact part number rather than relying only on the family name.

The MultiPlus must still be programmed for the battery chemistry, available shore or generator current, and the desired low-voltage behaviour. “Plugged in” does not guarantee full charging if the AC input-current limit or charger-current setting has been reduced.

VE.Direct links compatible Victron devices for data and configuration. Cerbo GX acts as a central communications and monitoring hub, GX Touch provides a local screen, and VRM provides remote monitoring when the GX system has internet access. Not every device uses the same communication port, so confirm compatibility and required cables.

A GX device does not replace the individual equipment’s required protection or configuration. Plan the communications cables, power supply, internet connection, and sensor layout along with the electrical system so the installation remains serviceable.

Low-voltage DC work still involves extremely high fault current, and inverter/charger installations also involve hazardous AC power, grounding, neutral switching, and electrical-code requirements. Follow the manufacturer documentation and applicable codes, and use a qualified electrician whenever the work is outside your training or local rules require it.

Before energizing, verify polarity, protective-earth continuity, neutral/ground arrangement, breaker sizes, strain relief, and enclosure suitability. Test transfer operation and every power source deliberately—shore, generator, inverter, and bypass—before relying on the system.

Cable size depends on maximum continuous current, surge duration, one-way run length, allowable voltage drop, insulation temperature rating, installation method, and applicable code. Use the equipment manufacturer’s minimum recommendation as a starting point and increase conductor size when voltage drop or installation conditions require it.

A cable must satisfy both ampacity and voltage-drop. A conductor can stay below its temperature limit yet still be too small because the equipment sees excessive voltage drop. In a 12V inverter circuit, even a fraction of a volt can cause nuisance low-voltage shutdown.

After installation, run the expected heavy load and measure voltage at the battery and at the equipment. Inspect the full cable path for heating, especially at lugs, switches, fuse holders, and busbars. A hot connection is usually a resistance problem—not a reason to install a larger fuse.

Low-voltage systems draw high current, so even small cable resistance causes noticeable voltage drop and heat. Calculate the complete circuit length—positive and negative—not just the one-way distance. Keep high-current battery-to-inverter runs short whenever possible.

When possible, locate the inverter and other high-current equipment close to the battery, then run the longer distance on the AC side or at a higher DC voltage. Do not coil excess high-current cable tightly; cut or route it properly and support it against vibration and abrasion.

The protective device must protect the cable while carrying the expected normal load without nuisance trips. It must also have adequate DC voltage and interrupt ratings for the battery bank. Equipment manuals may specify a fuse size; do not exceed the cable ampacity simply because the equipment can draw more.

The fuse protects the cable. First determine the circuit’s maximum continuous current, then choose a cable with adequate ampacity for the installation and acceptable voltage drop. The fuse must be large enough for normal current and equipment surge, but must not exceed the allowable protection for the smallest conductor in that circuit.

For loads expected to run continuously, a common design rule is to keep continuous current at no more than 80% of the fuse or breaker rating—equivalent to sizing protection at about 125% of the continuous load. An 80A continuous load would commonly lead to a 100A protective device, but only if the cable and connected equipment are rated for at least that value. Manufacturer instructions and applicable electrical code take priority.

Finally, confirm DC voltage rating, interrupt capacity, terminal size, and time-current behaviour. Install the protection as close to the source as practical. If a cable becomes smaller downstream, that smaller conductor may need its own protection.

They cover different current ranges, mounting styles, voltage ratings, and interrupt capabilities. Blade and MIDI fuses suit smaller branch circuits; MEGA and ANL are common for larger DC loads; MRBF mounts close to a battery terminal; and Class T provides very high interrupt capacity for demanding battery and inverter systems. Use the type required by the equipment and fault-current risk.

Do not choose only by amperage. A 200A ANL fuse and a 200A Class T fuse do not provide the same fault-interruption performance. Large LiFePO₄ banks can supply extremely high short-circuit current, which is why inverter manufacturers often specify a particular fuse class.

Match the fuse to a purpose-built holder, use clean flat contact surfaces, tighten to the holder specification, and cover exposed live parts. Inspect the holder under normal heavy load; heat at the studs or fuse clips indicates resistance that needs correction.

Only when the breaker is specifically DC-rated and approved for switching or isolation in that application. Some protective breakers are not intended for frequent manual operation. A dedicated battery or PV disconnect may still be the clearer and more durable choice.

A suitable device must have the correct DC voltage rating, continuous-current rating, interrupt capacity, and number of poles. If it will be operated as a switch, it must also be identified by the manufacturer as suitable for isolation or switching—not merely as an automatically resetting overcurrent device.

Some DC breakers are polarity-sensitive because they use magnets to extinguish an arc. Wire LINE and LOAD exactly as marked. In bidirectional battery circuits, confirm the breaker is specifically suitable for current flowing both ways; charging reverses the normal direction of current.

Do not rely on inexpensive automotive-style breakers or generic red rotary switches for high continuous loads without verified ratings. After commissioning, run the expected load and inspect for voltage drop, odour, discoloration, or abnormal heat. Our disconnect-switch heat test shows why connection quality matters.

Busbars provide organized common connection points when several chargers, loads, batteries, or inverters share a bank. Choose busbars with adequate continuous-current and voltage ratings, cover exposed positive conductors, and protect each outgoing circuit as required.

Arrange batteries and large equipment so current paths are balanced. On a parallel bank, taking positive from one end and negative from the opposite end—or using equal-length leads to busbars—helps batteries share current. Do not stack more lugs on a stud than the manufacturer permits.

After installation, cover the positive busbar, secure cables against movement, and check every connection under load for heating. The busbar rating is not useful if a small jumper, stud, or lug in the same path has a lower limit.

Match the lug barrel to the conductor gauge and the ring hole to the equipment stud. Strip without nicking strands, use a correctly sized hex or indent crimper, inspect the completed crimp, and add adhesive-lined heat shrink where appropriate. Do not enlarge a hole or use an oversized lug that cannot sit flat.

The cable gauge, copper stranding class, and lug barrel must actually match. A lug that slides loosely over the conductor or a hammer crimp that only dents one side can create hidden resistance. The finished cable should not pull out or rotate in the barrel.

After installation, operate the system at a meaningful load and inspect both ends of every cable. Look for warmth, discoloration, softened insulation, looseness, or a voltage drop across the connection. Recheck new installations after the first few heavy-load cycles, especially where vibration or thermal cycling is present.

Use the torque value provided on the product label or in its manual. Overtightening can damage threaded inserts or circuit boards, while loose connections create resistance and heat. Support heavy cables so vibration and cable weight do not load the terminal.

Use two wrenches where necessary so tightening a cable lug does not twist an internal terminal or connected busbar. Place lugs flat against the current-carrying surface; do not put washers between the lug and terminal unless the manufacturer’s hardware arrangement specifically requires it.

After commissioning, check for abnormal heat under load. Do not tighten a hot, energized connection. Isolate the circuit, allow it to cool, inspect for damage, and then correct the assembly using the specified torque.

Usually only connectors of the same series, size, keying, and colour will mate. The colours are mechanically keyed to help prevent connecting incompatible voltages or circuits. Contacts must also match the housing series and cable size.

Select the contact from both cable size and expected current, then crimp it with tooling that produces the specified profile. Fully seat each contact until it locks, tug-test the cable, and verify polarity before mating the connector for the first time.

Physical fit does not guarantee a certified or weather-tight connection. For permanent arrays, use matching connector families from the same manufacturer or replace both mating halves with an approved matched pair. Use the correct crimp contacts and tooling for the connector and wire size.

A correct solar crimp captures the conductor without cutting strands and separately supports the insulation or seal as designed. Confirm the contact clicks fully into the housing, tighten the cable gland correctly, and tug-test before energizing.

For portable-power adapters and connector identification, use our Solar Connector Guide.

We need the panel count and dimensions, portrait or landscape orientation, row layout, roof or ground-mount type, roof covering, structural attachment points, site location, and relevant wind and snow loads. A panel layout or roof sketch helps identify rail, attachment, clamp, and splice quantities.

Panel wattage alone is not enough; provide the exact module dimensions and clamp zones from its installation manual. The same number of panels can require a different rail and attachment count when row lengths, roof edges, or snow zones change.

A typical system uses Rapid Rail, roof-specific attachments or L-brackets, bonding mid clamps, end clamps, rail joiners where required, and grounding hardware. The exact parts vary with roof type, array layout, rail orientation, and local structural requirements.

Use only compatible clamps, joiners, attachments, and fasteners in the listed assembly. Substituting a part that looks similar can affect bonding, pull-out capacity, corrosion resistance, or the engineered span.

Yes. Aluminum rail is commonly supplied in standard lengths and cut on site with an appropriate saw and blade. Deburr cut ends, keep clamp and splice zones clear, and follow the manufacturer’s limits for cantilever, spans, and splice placement.

Plan cuts before ordering so offcuts can be reused where permitted. Never place a rail splice directly in a forbidden zone or assume a joined rail has the same structural behaviour everywhere as an unspliced length.

Attachment spacing is an engineered decision based on the racking tables, roof structure, wind, snow, building height, array location, and attachment type. A convenient rafter or truss spacing is not automatically the permitted rail span. Use the current manufacturer documentation and local design requirements.

Locate the actual framing rather than relying only on roof-surface measurements. Missed rafters, split framing, incorrect pilot holes, and poorly sealed penetrations can create both structural and water problems. When the structure is uncertain, have it assessed before installation.

Yes, where required by the racking system and electrical code. Listed bonding clamps and hardware create the intended electrical path between modules and rails; grounding lugs connect that system to the grounding conductor. Follow the approved installation method because ordinary hardware may not provide reliable bonding.

Bonding surfaces must be clean and assembled to the specified torque. Paint, heavy oxidation, incorrect washer placement, or reused one-time bonding hardware can interrupt the path. Verify continuity as required before energizing the array.

Proper MC4-style crimpers, connector wrenches, cable cutters, torque tools, meters, and fall-protection equipment improve reliability and safety. Use tooling that matches the exact connector and fastener system. Browse our solar and electrical tools.

A continuity tester or multimeter does not replace safe live-voltage procedures. Cover panels or isolate strings before handling exposed DC connectors, and never unplug a connector under load unless it is specifically designed for load breaking.

Visit our Downloads page for Sapphire battery documents, JBD app links, BM01/BM02 monitor manuals, HTRC charger manuals, controller documentation, and selected solar and racking files. Individual product pages may contain additional model-specific documentation.

Match documents by exact model number and revision. Similar-looking chargers, controllers, batteries, and Victron devices may have different terminals, settings, or limits. Save a copy with the installation records for future troubleshooting.

Check the product label and your order confirmation for the complete model or part number. For Victron products, the part number is especially important because similar-looking models can have different voltage, current, isolation, certification, or communications features.

Photograph the full label before installing equipment in a hidden compartment. Include connector orientation and terminal markings. This simple record makes future support, replacement, and configuration much easier.

Yes. Send us the battery voltage, list of loads and runtimes, charging sources, solar panel details, cable distances, installation type, location, and any equipment you already own. Clear photos or a simple sketch are useful. We can help build or review a practical bill of materials, while final code and installation responsibility remains with the installer.

For useful sizing, do not send only a desired inverter or panel wattage. Tell us what must run, its watts or amps, hours per day, motor startup requirements, desired days without charging, and winter versus summer use. Those details determine the battery, solar, charger, cable, and fuse requirements.

Include the exact product model, order number if available, a clear description of the symptom, when it started, wiring photos, measured voltages, equipment settings, protection or fault codes, and any troubleshooting already completed. For Bluetooth products, screenshots of the main status and cell-voltage pages are especially helpful.

Measure at the battery terminals and again at the equipment while the fault is happening whenever it is safe to do so. A system that reads 13V with no load can still collapse through a loose connection when a large load starts.

Standard Sapphire LiFePO₄ batteries carry the coverage described in our Warranty Policy, including model and condition-specific terms. Refurbished or special-buy products may have different coverage, so refer to the product listing and policy that applied at purchase.

Warranty protects against covered defects, not damage from reverse polarity, incorrect voltage, improper charging, physical damage, unsupported configurations, or prolonged deep discharge. Following the label limits and keeping installation records makes support much more straightforward.

Products from Victron, AIMS, Lumera, Kinetic, and other manufacturers are covered by their applicable manufacturer terms. Sapphire will help facilitate support where possible, but the manufacturer controls eligibility and remedy. Keep proof of purchase and do not discard requested packaging or components.

Do not dismantle, modify, or return a product before receiving instructions. Manufacturers may require serial information, test results, photographs, configuration files, or troubleshooting steps before authorizing a return.

Sapphire has a 14-day return-request period after you receive the item. To qualify, the product must be unused and in the condition received, with its original tags, included parts and accessories, and original packaging. Special-buy and final-sale items cannot be returned, and custom or special-order products are excluded.

Shipping costs are non-refundable, including the outbound cost Sapphire paid when the original order shipped free. Returned items that are damaged or missing packaging, parts, or accessories may be subject to a restocking fee. Review the Refund Policy before opening, cutting, assembling, or installing an item if fit or compatibility is uncertain.

Contact support with the order information, model number, detailed symptoms, photos or video, readings, fault codes, and troubleshooting already attempted. If a return is required, wait for an RMA number and shipping instructions. Keep the original packaging when possible so heavy batteries and sensitive equipment can be transported safely.

Do not ship a lithium battery without authorization and the correct packaging. Transport rules, terminal protection, labelling, and carrier acceptance matter. The support team will provide the next steps after reviewing the initial evidence.