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  • 20 Amp MPPT Solar Charge Controller With Bluetooth
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Win-K Series MPPT Solar Charge Controller w/ Bluetooth

Win-K Series MPPT Solar Charge Controller w/ Bluetooth

$149.00 CAD
$149.00 CAD $149.00 CAD
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Win-k Series MPPT Solar Charge Controller (Bluetooth)

A rugged, efficient MPPT solar charge controller designed for mobile and outdoor power systems. With an IP54 dust & splash-resistant rating, this controller is ideal for RVs, vans, camping setups, and outdoor equipment where moisture or dust may be present.

Outdoor Durability:
IP54 protection helps shield against dust, light rain, and splashing — perfect for mobile installs or damp environments. (Not submersible.)

Powered by an advanced Maximum Power Point Tracking (MPPT) algorithm, the controller extracts more usable energy from your solar panels — with up to 99.9% tracking efficiency and up to 98% conversion efficiency.

Built-in Bluetooth lets you monitor performance, history, and charging parameters through the free mobile app (Android & Apple), allowing the controller to be mounted out of sight while still giving full access to system data.

Low-Profile Design:
With a thin, compact chassis (just 31.5 mm thick on the WIN2075-K), the WIN Series fits easily into tight RV cabinets, electrical bays, van builds, and battery compartments. Ideal for clean, space-restricted installs.

Suggested Applications

  • RVs, trailers, and motorhomes
  • Truck campers
  • Vanlife & bus conversions
  • Portable and mobile power systems
  • Emergency power & backup systems
  • Work & Landscaping Trailers

Why You’ll Love It

  • 12V / 24V flexibility — automatic or manual selection for common mobile battery systems.
  • MPPT performance — real MPPT tracking delivers more energy vs. PWM alternatives.
  • Up to 100V PV input — works with series connected panels for max efficiency
  • IP54 protection — built to handle dusty or damp installation locations.
  • Battery compatibility — Liquid, Gel, AGM, Lithium, and User mode supported.
  • Thermal management — aluminum heatsink + automatic power management for reliability.
  • Bluetooth monitoring — check system status without crawling into compartments.
  • Built-in safety — dual automatic limits for over-power or over-current conditions.

Specifications

20A MPPT
Model Win2075-k
Battery Voltage 12V / 24V (Automatic or Manual Selection)
Charging Current 20A Max
Max PV Input Voltage 75V Max
MPPT Tracking Efficiency > 99.9%
Conversion Efficiency Up to 98%
Supported Battery Types Liquid, Gel, AGM, Lithium, User
Communication Bluetooth (Android & Apple App)
IP Rating IP54 — Dust & Splash Resistant
Dimensions 108.6 × 164.2 × 31.5 mm
≈ 4.3 × 6.5 × 1.2 in
Weight 706 g (1.6 lbs)
40A MPPT
Model Win40100-k
Battery Voltage 12V / 24V (Automatic or Manual Selection)
Charging Current 40A Max
Max PV Input Voltage 100V Max
MPPT Tracking Efficiency > 99.9%
Conversion Efficiency Up to 98%
Supported Battery Types Liquid, Gel, AGM, Lithium, User
Communication Bluetooth (Android & Apple App)
IP Rating IP54 — Dust & Splash Resistant
Dimensions 184.5 × 130 × 39.5 mm
≈ 7.26 × 5.12 × 1.56 in
Weight 1.4 Kg (3.1 lbs)

Frequently Asked

Can I connect more than one panel?

Yes - you can connect multiple solar panels in parallel or series, so long as you don't exceed the Open Circuit voltage limitation of the controller. Remember to leave a safety margin for cold weather, if applicable.

How is MPPT different from PWM?

MPPT is "Maximum Power Point Tracking" and as the name implies, it maximizes the power harvested from your solar panels. It achieves this by using a microprocessor to automatically (and intelligently) make adjustments to how the charging process is loading the solar panel. By constantly adjusting, it can seek out the combination of amps and volts that produces the highest overall wattage.

The controllers typically also contain more advanced electronics to convert excess solar voltage into amps at the correct voltage required to charge your battery system.

Will an MPPT controller work with LiFePO4 batteries?

YES absolutely! MPPT controllers often have a lithium battery setting, which takes 99% of the configuration work out the equation.

Many also include a "User" mode for the battery type, allowing you to set precise charging parameters for your specific application.

Do I need a special MPPT controller for heated batteries?

No - not typically. Heating in the batteries is usually handled by the battery's BMS electronics, and not by the solar equipment.

Is MPPT worth it over PWM for my system?

Usually yes. Generally, in 95% of installations MPPT is the better choice. However, for low load systems that don't require the improved production of MPPT, PWM can still be an acceptable choice.

Read more here

How many panels can I add to this controller?

That's a bit of a complex question, so feel free to contact us and ask for help if you're not sure.

Solar controllers typically are limited by the amount of amps they can supply for battery charging. This number multiplied by the battery nominal voltage gives you a rough idea of the wattage limitation.

ex: 40A controller at 12.8V (LiFePO) is best suited to about 512 Watts.

However, in reality, solar panels don't always generate their full rated wattage. Clouds, time of day, seasons, all play a role. So it is ok to go over the above wattage number, in order to maximize your daily charging. The hard limit you need to respect, is the Voltage Open Circuit limits of the controller. Do not exceed this, or you risk damage to your controller.

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