{"product_id":"victron-battery-balancer-24v-48v-bba000100100","title":"Victron Battery Balancer (24V \/ 48V)","description":"\u003cdiv class=\"sapphire-product-description\" role=\"region\" aria-label=\"Victron Battery Balancer\"\u003e\n\u003ch2 class=\"sapphire-title\"\u003eVictron Battery Balancer for 24V \u0026amp; 48V Battery Banks\u003c\/h2\u003e\n\u003chr class=\"sapphire-hr\"\u003e\n\u003cp class=\"sapphire-p\"\u003e\u003cstrong\u003eThe Victron Battery Balancer helps keep series-connected 12V batteries at a similar state of charge.\u003c\/strong\u003e It monitors the midpoint of a 24V battery bank and draws up to 0.7A from the higher-voltage battery during charging, helping the two batteries gradually converge.\u003c\/p\u003e\n\u003cp class=\"sapphire-p\"\u003eUse one balancer with two 12V batteries in a 24V bank. A 48V bank built from four series-connected 12V batteries requires three Battery Balancers.\u003c\/p\u003e\n\u003cdiv class=\"sapphire-section-title\"\u003eWhy You’ll Love It\u003c\/div\u003e\n\u003chr class=\"sapphire-hr\"\u003e\n\u003cul class=\"sapphire-checklist\"\u003e\n\u003cli\u003eHelps keep series-connected 12V batteries balanced\u003c\/li\u003e\n\u003cli\u003eSupports 24V banks and expandable 48V configurations\u003c\/li\u003e\n\u003cli\u003eUp to 0.7A of automatic balancing current\u003c\/li\u003e\n\u003cli\u003eLED indicators show operation, balancing and alarm status\u003c\/li\u003e\n\u003cli\u003eBuilt-in alarm relay can signal excessive midpoint deviation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"sapphire-callout sapphire-callout-yellow\"\u003e\n\u003cdiv class=\"sapphire-callout-title\"\u003eBuilding a Series Battery Bank?\u003c\/div\u003e\n\u003cp class=\"callout-p\"\u003eOur series-capable 12V LiFePO₄ batteries can be combined into higher-voltage banks. Always use matching batteries of the same model, capacity, age and state of charge, and fully charge each battery before connecting the bank.\u003c\/p\u003e\n\u003cdiv class=\"sapphire-cta-group\"\u003e\n\u003ca class=\"sapphire-cta\" href=\"https:\/\/sapphirebattery.ca\/products\/12v-100ah-bluetooth-lifepo4-battery\" rel=\"noopener\" target=\"_blank\"\u003eShop 12V 100Ah Batteries\u003c\/a\u003e \u003ca class=\"sapphire-cta\" href=\"https:\/\/sapphirebattery.ca\/products\/12v-300ah-bluetooth-lifepo4-battery-200a-high-output\" rel=\"noopener\" target=\"_blank\"\u003eShop 12V 300Ah Batteries\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sapphire-section-title\"\u003eApplications\u003c\/div\u003e\n\u003chr class=\"sapphire-hr\"\u003e\n\u003cul class=\"sapphire-checklist\"\u003e\n\u003cli\u003eTwo 12V batteries connected in series for a 24V bank\u003c\/li\u003e\n\u003cli\u003eFour 12V batteries connected in series for a 48V bank\u003c\/li\u003e\n\u003cli\u003eRV, marine and off-grid battery systems\u003c\/li\u003e\n\u003cli\u003eSeries-parallel battery banks\u003c\/li\u003e\n\u003cli\u003eBackup-power and mobile equipment systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"sapphire-callout sapphire-callout-blue\"\u003e\n\u003cdiv class=\"sapphire-callout-title\"\u003eBalances Complete 12V Batteries\u003c\/div\u003e\n\u003cp class=\"callout-p\"\u003eThe Victron Battery Balancer manages voltage differences between complete 12V batteries connected in series. It does not balance the individual cells inside a lithium battery and does not replace the battery’s internal BMS.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sapphire-section-title\"\u003eSpecifications\u003c\/div\u003e\n\u003chr class=\"sapphire-hr\"\u003e\n\u003cdiv class=\"sapphire-table-wrap\"\u003e\n\u003ctable class=\"sapphire-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"sapphire-spec-header\"\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVictron Part Number\u003c\/td\u003e\n\u003ctd\u003eBBA000100100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003eUp to 18V per battery\u003cbr\u003e36V maximum total\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurn-On Voltage\u003c\/td\u003e\n\u003ctd\u003e27.3V ±1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurn-Off Voltage\u003c\/td\u003e\n\u003ctd\u003e26.6V ±1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalancing Start Threshold\u003c\/td\u003e\n\u003ctd\u003e50mV midpoint deviation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Balancing Current\u003c\/td\u003e\n\u003ctd\u003e0.7A when deviation exceeds 100mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm Threshold\u003c\/td\u003e\n\u003ctd\u003e200mV deviation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm Reset Threshold\u003c\/td\u003e\n\u003ctd\u003e140mV deviation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm Relay\u003c\/td\u003e\n\u003ctd\u003eNormally open\u003cbr\u003e60V \/ 1A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby Current Draw\u003c\/td\u003e\n\u003ctd\u003e0.7mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Terminals\u003c\/td\u003e\n\u003ctd\u003eUp to 6mm² \/ 10 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-30°C to +50°C\u003cbr\u003e(-22°F to +122°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (L × W × H)\u003c\/td\u003e\n\u003ctd\u003e113 × 47 × 100mm\u003cbr\u003e(4.45 × 1.85 × 3.94in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.4kg (0.88lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years — Victron Energy standard warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot-note\"\u003eSpecifications are believed to be accurate at the time of publication but may change without notice. Please refer to the latest Victron Energy documentation when a specification is critical to your application. \u003ca class=\"sapphire-link\" href=\"https:\/\/sapphirebattery.ca\/pages\/contact\" rel=\"noopener\" target=\"_blank\"\u003eContact us for help.\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"sapphire-section-title\"\u003eFrequently Asked\u003c\/div\u003e\n\u003chr class=\"sapphire-hr\"\u003e\n\u003cdiv class=\"sapphire-faq\"\u003e\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eHow many Battery Balancers do I need?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp\u003eThis depends on the voltage of your bank, and how many batteries you are using.\u003c\/p\u003e\n\u003cp\u003e24V - Use one Battery Balancer for two 12V batteries connected in series as a 24V bank. \u003c\/p\u003e\n\u003cp\u003e48V - You need 3 balancers to properly balance between the 4 series connected batteries.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e*Please note that these are not suitable for balancing 2x24V batteries in series*\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eCan it be used with LiFePO₄ batteries?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp\u003e\u003cstrong\u003eYES.  \u003c\/strong\u003eIt balances the voltage between complete 12V batteries rather than the cells inside them. Confirm that the batteries are approved for series use, use matching batteries, and follow both the battery and Victron installation instructions.\u003c\/p\u003e\n\u003cp\u003eEach lithium battery must retain its own internal BMS. The Battery Balancer supplements the individual battery protection; it does not replace it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eWhy do I want a battery balancer?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp\u003eBatteries connected in series can gradually drift apart in voltage and state of charge. One battery may become overcharged while another remains undercharged, reducing available capacity and potentially shortening the life of the entire bank.\u003c\/p\u003e\n\u003cp\u003eWith Lithium batteries this can lead to BMS protections activating (usually when charging), causing undesirable behavior in the system.\u003c\/p\u003e\n\u003cp\u003eThe Victron Battery Balancer monitors the midpoint of the series bank and draws a small balancing current from the higher-voltage battery during charging. This helps the batteries converge toward a similar state of charge and provides an alarm if the voltage difference becomes excessive.\u003c\/p\u003e\n\u003cp\u003eA balancer helps maintain a healthy, properly matched bank, but it cannot repair a damaged battery or compensate for severely mismatched batteries.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eDoes this work with AGM or lead-acid batteries?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp\u003eYes. The Victron Battery Balancer is well suited to series-connected lead-acid battery banks, including AGM, gel and flooded lead-acid batteries.\u003c\/p\u003e\n\u003cp\u003eFor best results, use batteries of the same type, model, capacity, age and state of charge. New batteries should be individually charged and verified before being connected in series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n  \u003csummary\u003eDo I need fuses on the Battery Balancer leads?\u003c\/summary\u003e\n  \u003cdiv class=\"sapphire-faq-body\"\u003e\n    \u003cp\u003eVictron specifies using at least 0.75mm² wire for the positive, negative and midpoint connections. Where UL compliance is required, Victron also specifies protecting the balancer leads near the batteries with 10A DC-rated fuses.\u003c\/p\u003e\n\n    \u003cp\u003eEven when UL compliance is not required, protecting small wires connected directly to a battery is good installation practice. We recommend using inline ATC\/ATO fuse holders with \u003cstrong\u003e10A ATC fuses\u003c\/strong\u003e, installed as close as practical to the battery connections. Follow the wiring arrangement shown in the Victron manual.\u003c\/p\u003e\n\n    \u003cdiv class=\"sapphire-cta-group\"\u003e\n      \u003ca class=\"sapphire-cta\" href=\"https:\/\/sapphirebattery.ca\/products\/12awg-inline-atc-ato-fuse-holder-3ft-solar-marine\" target=\"_blank\" rel=\"noopener\"\u003eShop Inline ATC\/ATO Fuse Holders\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eCan you special order Victron products that aren’t listed?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp\u003eYes! We can special order many Victron Energy products that are not currently listed on our website. Contact us with the product name or part number, and we’ll confirm availability, pricing and estimated lead time.\u003c\/p\u003e\n\u003cdiv class=\"sapphire-cta-group\"\u003e\u003ca class=\"sapphire-cta\" href=\"https:\/\/sapphirebattery.ca\/pages\/contact\" rel=\"noopener\" target=\"_blank\"\u003eAsk About a Victron Special Order\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":67859552567615,"sku":"BBA000100100","price":69.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0914\/6803\/8463\/files\/BBA000100100Battery-Balancer_top_2000px.webp?v=1793034660","url":"https:\/\/sapphirebattery.ca\/products\/victron-battery-balancer-24v-48v-bba000100100","provider":"Sapphire Energy","version":"1.0","type":"link"}