{"product_id":"src-jk-2727-jkbms-b2a20s20p-hc-7s-20s-heating-canbus-active-balance-bms-balance-current-2a-continuous-current-200a-lifepo4-li-ion-lto-battery","title":"JKBMS JK-B2A20S20P-HC 7S-20S 200A Active Balance BMS 2A for LiFePO4\/Li-ion\/LTO, RS485\/CANBUS","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe \u003ca href=\"https:\/\/tsolar.top\/collections\/jkbms-jikong-bms\" title=\"JKBMS - JIKONG BMS\"\u003eJKBMS\u003c\/a\u003e (Jikong) JK-B2A20S20P-HC is an active balance smart BMS for LiFePO4, Li-ion, and LTO battery packs, supporting 7S to 20S configurations (chemistry-dependent). It combines 2A active balancing (Full State On), 200A continuous charge\/discharge capability, Bluetooth monitoring for Android\/iOS, and support for battery heating via a built-in heating chip. The battery pack is self-powered.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive balancing:\u003c\/strong\u003e Active Balance (Full State On), balance current 2000mA (2A).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery string support:\u003c\/strong\u003e Li-ion 7S20S; LiFePO4 8S20S; LTO 12S20S.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh current rating:\u003c\/strong\u003e 200A continuous charge current; 200A continuous discharge current; maximum discharge current 350A (MAX 2min).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating support:\u003c\/strong\u003e Supports battery heating function (built-in heating chip). (Heat function is also shown as a customizable interface\/port.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication \u0026amp; monitoring:\u003c\/strong\u003e Built-in Bluetooth module; supports Android\/iOS phones. Other interfaces: RS485 (default). CANBUS\/HEAT (customized).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtections:\u003c\/strong\u003e Over charge protection; over discharge protection; over current protection; short circuit protection; all-in protection (prevents cable drop\/poor contact); over temperature protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating modes:\u003c\/strong\u003e Storage Mode; Normal Working Mode; Shutdown (below shutdown voltage); Standby Mode (130 days can be set). Charging activates return to normal working mode.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eJK-B2A20S20P-HC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalance method\u003c\/td\u003e\n\u003ctd\u003eActive Balance (Full State On)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalance current\u003c\/td\u003e\n\u003ctd\u003e2A (2000mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of battery strings (general)\u003c\/td\u003e\n\u003ctd\u003e7S to 20S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of battery strings (Li-ion)\u003c\/td\u003e\n\u003ctd\u003e7S-20S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of battery strings (LiFePO4)\u003c\/td\u003e\n\u003ctd\u003e8S-20S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of battery strings (LTO)\u003c\/td\u003e\n\u003ctd\u003e12S-20S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring output \/ method\u003c\/td\u003e\n\u003ctd\u003eCommon Port (Same Port)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous charge current\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous discharge current\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum discharge current (MAX 2min)\u003c\/td\u003e\n\u003ctd\u003e350A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOver charge protection current (ADJ)\u003c\/td\u003e\n\u003ctd\u003e10-200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOver current detect delay\u003c\/td\u003e\n\u003ctd\u003e2~120S Adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductive resistance in main circuit\u003c\/td\u003e\n\u003ctd\u003e0.47ma9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply mode\u003c\/td\u003e\n\u003ctd\u003eThe battery pack is self-powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle cell voltage supported\u003c\/td\u003e\n\u003ctd\u003e1-5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle cell voltage detection range\u003c\/td\u003e\n\u003ctd\u003e0-5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle cell voltage detection accuracy\u003c\/td\u003e\n\u003ctd\u003eError \u0026lt;10mV over full operating range; typical error \u0026lt;5mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage acquisition accuracy\u003c\/td\u003e\n\u003ctd\u003e5mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle cell voltage dropout detection\u003c\/td\u003e\n\u003ctd\u003eSupported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal voltage detection range\u003c\/td\u003e\n\u003ctd\u003e0-100V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal voltage detection accuracy\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.5%FSR (FSR = full scale)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent sense shunt range\u003c\/td\u003e\n\u003ctd\u003e-150A~300A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent sense shunt accuracy\u003c\/td\u003e\n\u003ctd\u003eError \u0026lt;0.5%FSR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoC estimation accuracy\u003c\/td\u003e\n\u003ctd\u003eError \u0026lt;8% (operating conditions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery remaining capacity accuracy\u003c\/td\u003e\n\u003ctd\u003eError range is less than 8%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Cycle AH cumulative value\u003c\/td\u003e\n\u003ctd\u003eHalf of the charge\/discharge value\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOver charge protection voltage\u003c\/td\u003e\n\u003ctd\u003e1.2-4.35V Adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOver charge release voltage\u003c\/td\u003e\n\u003ctd\u003e1.2-4.35V Adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOver discharge protection voltage\u003c\/td\u003e\n\u003ctd\u003e1.2-4.35V Adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOver discharge release voltage\u003c\/td\u003e\n\u003ctd\u003e1.2-4.35V Adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature detection\u003c\/td\u003e\n\u003ctd\u003e-40~125c\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity of temperature detection\u003c\/td\u003e\n\u003ctd\u003e3Pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature protection\u003c\/td\u003e\n\u003ctd\u003eYES\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort circuit protection\u003c\/td\u003e\n\u003ctd\u003eYES\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoulomb counter\u003c\/td\u003e\n\u003ctd\u003eYES\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth function\u003c\/td\u003e\n\u003ctd\u003eSupport for Android \u0026amp; iOS phone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther interfaces (default)\u003c\/td\u003e\n\u003ctd\u003eRS485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther interfaces (customized)\u003c\/td\u003e\n\u003ctd\u003eCANBUS\/HEAT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating power consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5mA (without communication) \/ 15mA (485\/CAN)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby power consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;2mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-40~85c\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStoring temperature\u003c\/td\u003e\n\u003ctd\u003e-40~95c\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e162*102*20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eInterfaces \/ Pin Labels (as marked)\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCANBUS (need customization):\u003c\/strong\u003e GND, CAN_H, CAN_L\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRS485 (by default):\u003c\/strong\u003e GND, RX, TX, VCC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD (by default):\u003c\/strong\u003e K-, K+, GND, B, A, VCC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat function (need customization):\u003c\/strong\u003e Heat Function connector\/port\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eBluetooth App Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDownload the specified Bluetooth application and activate the BMS.\u003c\/li\u003e\n\u003cli\u003eOpen the Bluetooth application and find the relevant serial number to check data.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLiFePO4 battery packs (8S-20S), Li-ion battery packs (7S-20S), and LTO battery packs (12S-20S)\u003c\/li\u003e\n\u003cli\u003eBattery systems requiring 2A active balancing and up to 200A continuous charge\/discharge\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor configuration and compatibility questions (RS485\/CANBUS\/heat options, wiring, and setup), contact support at \u003ca href=\"https:\/\/tsolar.top\/\"\u003ehttps:\/\/tsolar.top\/\u003c\/a\u003e or service@tsolar.top.\u003c\/p\u003e\u003ch2\u003eNotes from Series Graphics\u003c\/h2\u003e\u003cul\u003e\u003cli\u003eA separate series graphic references model \u003cstrong\u003eJK-BD6A17S6P\u003c\/strong\u003e with: Active Balance Current 0.6A; Adapt Battery Strings 10S-17S (LTO), 7S-17S (Li-ion), 8S-17S (LiFePO4); Continuous Discharge\/Charge Current 60A; and a device label stating Peak current 100A and Battery Strings 03-17S.\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"Jikong JK-BD6A17S6P active balance BMS 60A overview graphic with wiring leads\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A20S20P-HC-7S-20S-Heating-CANBUS-Active-Balance-BMS.jpg?v=1780113011\"\u003e\u003cimg alt=\"JKBMS JK-B2A20S20P-HC active balance smart BMS graphic, 2A balancing, 200A charge\/discharge, 7S–20S\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A20S20P-HC-7S-20S-Heating-CANBUS-Active-Balance-BMS_f6a13931-e1ea-4f6a-a585-bfed23f7d050.jpg?v=1780113017\"\u003e\u003cp\u003eThe JK-B2A20S20P-HC combines 2A active balancing with up to 200A continuous charge\/discharge for 7S–20S packs (chemistry dependent).\u003c\/p\u003e\n\u003cimg alt=\"Exploded view of JKBMS smart BMS showing enclosure, PCB layers, connectors, and internal components\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A20S20P-HC-7S-20S-Heating-CANBUS-Active-Balance-BMS.png?v=1780113026\"\u003e\u003cimg alt=\"JKBMS BMS connector pinout with CAN\/RS485, LCD header, and optional heating function port labels\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A20S20P-HC-7S-20S-Heating-CANBUS-Active-Balance-BMS_ae3098fa-7c9d-497b-98c9-8822b2a12cfb.jpg?v=1780113033\"\u003e\u003cp\u003eRS485 communication is standard, with optional CANBUS and heating connections depending on your build requirements.\u003c\/p\u003e\n\u003cimg alt=\"Bluetooth monitoring screen for showing pack voltage, current, balance status, and per-cell voltages\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A20S20P-HC-7S-20S-Heating-CANBUS-Active-Balance-BMS_8bde59e2-ca01-417a-a776-c1665e6fd0a8.jpg?v=1780113041\"\u003e\u003cp\u003eBluetooth monitoring in the mobile app provides live pack stats plus per-cell voltage readings for quick health checks.\u003c\/p\u003e\n\u003cimg alt=\"app screens showing device scan list, chemistry selection, wire resistance values, and live cell data\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A20S20P-HC-7S-20S-Heating-CANBUS-Active-Balance-BMS_ea8ae0c5-de24-48f1-84ce-4ff41926abe0.jpg?v=1780113047\"\u003e\u003cimg alt=\"Infographic of six BMS protections: overcharge, short circuit, overdischarge, overcurrent, all-in, overtemp\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A20S20P-HC-7S-20S-Heating-CANBUS-Active-Balance-BMS_9be83e02-6d8e-4f80-95a8-f2f2f26359f4.jpg?v=1780113056\"\u003e\u003cimg alt=\"Smart energy working mode switching chart for BMS: storage mode, normal working mode, shutdown, standby\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A20S20P-HC-7S-20S-Heating-CANBUS-Active-Balance-BMS_7a4c95bf-6a3d-4130-a70c-81a35f66064a.jpg?v=1780113062\"\u003e\u003cp\u003eSelectable operating modes support storage, normal use, standby, and low-voltage shutdown behavior.\u003c\/p\u003e\n\u003cimg alt=\"Specification comparison table for JK-series BMS models, including active balance current, strings supported, and interfaces\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A20S20P-HC-7S-20S-Heating-CANBUS-Active-Balance-BMS_4f5a816a-e732-4f9e-867c-9bf55feab525.jpg?v=1780113069\"\u003e\u003cp\u003eA side-by-side spec table makes it easier to match the correct JK-series BMS to your string count, current needs, and interface options.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"JIKONG","offers":[{"title":"Default Title","offer_id":52312345739538,"sku":"jk-2727-","price":157.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0863\/2860\/6994\/files\/JKBMS-7S-24S-Active-Balance-BMS-Balance-Current-0.6A-2A-Continuous-Current-100A-200A-Lifepo4-li-ion-LTO-Battery-5.jpg?v=1780067524","url":"https:\/\/tsolar.top\/products\/src-jk-2727-jkbms-b2a20s20p-hc-7s-20s-heating-canbus-active-balance-bms-balance-current-2a-continuous-current-200a-lifepo4-li-ion-lto-battery","provider":"TSolar","version":"1.0","type":"link"}