{"product_id":"jk-b2a8s-active-balancer","title":"JKBMS Active Balancer JK-B2A8S — 2A 2~8S Battery Equalizer","description":"\u003ch2\u003eJKBMS JK-B2A8S — 2A Active Battery Balancer for 2~8S Packs\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eJK-B2A8S\u003c\/strong\u003e is a compact, high-precision active battery balancer designed for 2 to 8 series battery packs. Using \u003cstrong\u003eultracapacitor-based energy transfer technology\u003c\/strong\u003e, it delivers a constant \u003cstrong\u003e2A balancing current\u003c\/strong\u003e regardless of the voltage difference between cells — eliminating the energy waste of passive balancing and extending the life of your battery pack.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2A constant active balancing current\u003c\/strong\u003e — independent of cell voltage delta\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-precision voltage monitoring\u003c\/strong\u003e — ±3mV accuracy per cell\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupports 2~8S configurations\u003c\/strong\u003e — LiFePO4, Li-ion, LiPo, LTO, lead-acid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth connectivity\u003c\/strong\u003e — monitor cell voltages, balancing status, and adjust parameters via mobile app\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional RS485 or CAN communication\u003c\/strong\u003e (one of two, select at order)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional temperature sensor\u003c\/strong\u003e input\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLED Bluetooth status indicator\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact and lightweight\u003c\/strong\u003e — 136.6 × 85.3 × 20.5 mm, 450g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo power-on switch\u003c\/strong\u003e — connects and starts balancing automatically\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCell count: 2S ~ 8S\u003c\/li\u003e\n\u003cli\u003eBalancing current: 2A (constant)\u003c\/li\u003e\n\u003cli\u003eCell voltage range: 1V ~ 5V\u003c\/li\u003e\n\u003cli\u003eVoltage accuracy: ±3mV\u003c\/li\u003e\n\u003cli\u003eExternal power supply: DC 10~40V (via V+ \/ V- terminals)\u003c\/li\u003e\n\u003cli\u003eDimensions: 136.6 × 85.3 × 20.5 mm\u003c\/li\u003e\n\u003cli\u003eWeight: 450g\u003c\/li\u003e\n\u003cli\u003eCommunication: Bluetooth (standard) + optional RS485 or CAN\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInterface\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eP1\u003c\/strong\u003e — Balance \u0026amp; cell voltage connector (XH-11AW): B0~B8 cell taps + V+\/V− power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP2\u003c\/strong\u003e — Temperature sensor input (XH-2AW, optional)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP3\u003c\/strong\u003e — RS485 \/ CAN communication port (XH-3AW, optional)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD1\u003c\/strong\u003e — LED Bluetooth status indicator\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSmall sightseeing vehicles and e-scooters\u003c\/li\u003e\n\u003cli\u003eHome energy storage systems (ESS)\u003c\/li\u003e\n\u003cli\u003eSolar power stations and off-grid systems\u003c\/li\u003e\n\u003cli\u003eBase station backup power\u003c\/li\u003e\n\u003cli\u003eBattery pack maintenance and cell recovery\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWiring Notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVerify all balance wire connections before powering on\u003c\/li\u003e\n\u003cli\u003eWhen used alongside a BMS protection board, connect V− to the BMS P− terminal\u003c\/li\u003e\n\u003cli\u003eNo power-on switch — the balancer starts working immediately upon connection\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e📱 \u003cstrong\u003eBluetooth App:\u003c\/strong\u003e Available for iOS and Android — monitor cell voltages, balancing status, and configure parameters wirelessly.\u003c\/p\u003e\u003cp\u003e📦 \u003cstrong\u003eIn Stock — Ships from US Warehouse\u003c\/strong\u003e (fast local delivery)\u003c\/p\u003e\u003cp\u003eNeed help? Contact us via WhatsApp: \u003ca href=\"https:\/\/wa.me\/18189383175\"\u003e+1 818 938 3175\u003c\/a\u003e | Email: service@jkbms-ess.com\u003c\/p\u003e","brand":"JKBMS","offers":[{"title":"Default Title","offer_id":49553137074314,"sku":"JK-B2A8S","price":61.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/0591\/1434\/files\/JKBMS_JK-B2A8S_2A_Active_Battery_Balancer_for_2_8S_LiFePO4_Lithium_Battery_Packs.jpg?v=1781543235","url":"https:\/\/jkbms-ess.com\/de-eu\/products\/jk-b2a8s-active-balancer","provider":"JKBMS-ESS","version":"1.0","type":"link"}