{"product_id":"src-jk-3925-jkbms-jk-qb2a8s20p-cr-with-can-bus-rs485-heating-3s-8s-active-balance-bms-balance-current-2a-continuous-current-200a-lifepo4-li-ion-lto-battery-jikong-bms","title":"JIKONG JKBMS JK-QB2A8S20P-CR Active Balance Smart BMS 3S-8S, 200A, 2A, CAN Bus RS485 Heating","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe JIKONG \u003ca href=\"https:\/\/tsolar.top\/collections\/jkbms-jikong-bms\" title=\"JKBMS - JIKONG BMS\"\u003eJKBMS\u003c\/a\u003e JK-QB2A8S20P-CR is an active balance \u003ca href=\"https:\/\/tsolar.top\/collections\/smart-bms\" title=\"Smart BMS\"\u003esmart BMS\u003c\/a\u003e (battery management system) for building and managing 3S to 8S battery packs, with 200A continuous charge\/discharge capability and 2A active balancing. It supports RS485 communication by default, CAN Bus support, a heating function, and built-in Bluetooth for Android\/iOS monitoring.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBattery strings support: 3S to 8S (Li-ion \/ LiFePO4); 7S to 8S (LTO)\u003c\/li\u003e\n\u003cli\u003eActive balance (Full State On), balance current: 2000mA (2A)\u003c\/li\u003e\n\u003cli\u003eContinuous charge current: 200A; continuous discharge current: 200A\u003c\/li\u003e\n\u003cli\u003eMaximum discharge current (MAX 2min): 350A\u003c\/li\u003e\n\u003cli\u003eWiring output \/ wiring method: Common Port (same port)\u003c\/li\u003e\n\u003cli\u003eBuilt-in Bluetooth; supports Android \/ iOS phone\u003c\/li\u003e\n\u003cli\u003eInterfaces: RS485 (default); CAN Bus and Heating supported\u003c\/li\u003e\n\u003cli\u003eProtection and monitoring support: short circuit protection, temperature protection, coulomb counter\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-QB2A8S20P; JK-QB2A8S20P-CR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Battery Strings (Li-ion)\u003c\/td\u003e\n\u003ctd\u003e3S-8S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Battery Strings (LiFePO4)\u003c\/td\u003e\n\u003ctd\u003e3S-8S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Battery Strings (LTO)\u003c\/td\u003e\n\u003ctd\u003e7S-8S\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\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\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\u003eConductive resistance in main circuit\u003c\/td\u003e\n\u003ctd\u003e0.3mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring output \/ wiring method\u003c\/td\u003e\n\u003ctd\u003eCommon Port (same port)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle cell voltage detection range\u003c\/td\u003e\n\u003ctd\u003e0-5V, error \u0026lt;10mV over full operating range; typical error value \u0026lt;5mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle Cell Voltage Range\u003c\/td\u003e\n\u003ctd\u003e1-5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport single cell voltage dropout detection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage acquisition accuracy\u003c\/td\u003e\n\u003ctd\u003e±5mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal voltage detection range\u003c\/td\u003e\n\u003ctd\u003e0-100V, \u0026lt;0.5%FSR (FSR=full scale)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Sense Shunt\u003c\/td\u003e\n\u003ctd\u003e-150A~300A, error \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\u003eOver current detect delay\u003c\/td\u003e\n\u003ctd\u003e2~120S Adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature detection\u003c\/td\u003e\n\u003ctd\u003e-40 to 125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity of temperature detection\u003c\/td\u003e\n\u003ctd\u003e3 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemp 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\u003eBluetooth built-in; support 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 to 85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStoring temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 95°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e228*120*22mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eCommunication, Heating, and LCD Port Notes (from provided material)\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCANBUS: Need customization\u003c\/li\u003e\n\u003cli\u003eRS485: By default\u003c\/li\u003e\n\u003cli\u003eLCD: By default\u003c\/li\u003e\n\u003cli\u003eHeat function: Need customization\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eConnector pin labels shown in provided material\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCANBUS: GND, CAN_H, CAN_L\u003c\/li\u003e\n\u003cli\u003eRS485: GND, RX, TX, VCC\u003c\/li\u003e\n\u003cli\u003eLCD: K-, K+, GND, B, A, VCC\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eBluetooth App Notes (from provided material)\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, then data can be checked.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProtection Functions (Six Security Protection)\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOver charge protection: Prevent over-charging affects battery life\u003c\/li\u003e\n\u003cli\u003eShort circuit protection: Automatic protection when short circuit protection\u003c\/li\u003e\n\u003cli\u003eOver discharge protection: Prevent the battery from running out\u003c\/li\u003e\n\u003cli\u003eOver current protection: Prevent the current from exceeding the battery range\u003c\/li\u003e\n\u003cli\u003eAll-in protection: Prevent cable drop or poor contact\u003c\/li\u003e\n\u003cli\u003eOver temp protection: Prevent the battery from over heating\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSmart Energy Working Mode Switching (from provided material)\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Mode\u003c\/strong\u003e: In transportation, storage, offline or wireless transmission off mode, the BMS is in storage mode, which does not consume battery pack current.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNormal Working Mode\u003c\/strong\u003e: When the charger is inserted in the storage mode and off mode, the BMS will immediately return to the normal working mode, and all the protection functions, equalization functions and communication functions will return to normal working.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShutdown\u003c\/strong\u003e: To prevent the BMS from wasting power for a long time and damaging the battery pack, the BMS has an automatic shutdown voltage, and the BMS automatically shuts down when a cell falls below the shutdown voltage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandby Mode\u003c\/strong\u003e: When the battery pack is in the static state (no charge and discharge current and no equilibrium current), the BMS will automatically enter the standby state after the set time (1-30 days can be set) is exceeded.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDIY battery packs using LiFePO4, Li-ion, or LTO chemistry within the supported string counts\u003c\/li\u003e\n\u003cli\u003eEnergy storage battery packs requiring RS485\/CAN monitoring, active balancing, and high continuous current capability\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor wiring and configuration assistance (including CANBUS\/HEAT customization questions), contact service@tsolar.top or visit https:\/\/tsolar.top\/.\u003c\/p\u003e\u003ch2\u003eAdditional Model References Appearing in the Provided Materials (for identification only)\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eJK-BD6A17S6P: Active Balance BMS; Active Balance Current: 0.6A; Adapt Battery Strings: 10S-17S (LTO), 7S-17S (Li-ion), 8S-17S (Lifepo4); Continuous Discharge\/Charge Current: 60A. Device label text includes: “Smart Active Balance BMS”, “Type: JK-bd6a17s6p”, “Balance Method: Active Balance”, “Balance Current: 0.6A”, “Continuous Current: 60A”, “Peak Current: 100A”, “Battery Strings: 03-17S”.\u003c\/li\u003e\n\u003cli\u003eJK_B2A20S20P-H-C: Active Balance BMS; Active Balance Current: 2A; Adapt Battery Strings: 10S-20S (LTO), 7S-20S (Li-ion), 8S-20S (Lifepo4); Continuous Discharge\/Charge Current: 200A; Support Batteries Heating Function \/ Built-in heating chip; Support RS485 Function Default \/ Built-in CANBUS Chip.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"Jikong active balance smart BMS module (alternate series) with wiring harness and feature callouts on black background\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-JK-QB2A8S20P-CR-with-CAN-BUS-RS485-Heating-3S-8S.jpg?v=1780110002\"\u003e\u003cimg alt=\"Jikong smart BMS (alternate series) with RS485 support and optional CANBUS\/heating functions, wiring leads included\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-JK-QB2A8S20P-CR-with-CAN-BUS-RS485-Heating-3S-8S_0620f116-1d14-4832-9afe-14941bba1351.jpg?v=1780110010\"\u003e\u003cimg alt=\"JIKONG JKBMS exploded internal structure view showing housing, PCB layers, connectors and components\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-JK-QB2A8S20P-CR-with-CAN-BUS-RS485-Heating-3S-8S.png?v=1780110018\"\u003e\u003cp\u003eA layered internal view highlights the control board, connectors, and enclosure layout used in the JIKONG JKBMS design.\u003c\/p\u003e\n\u003cimg alt=\"Interface pinout close-up for CAN\/RS485, LCD and optional heating connector positions on the BMS edge\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-JK-QB2A8S20P-CR-with-CAN-BUS-RS485-Heating-3S-8S_bb2f2f37-b03e-48e8-9ad0-9a6d221fa918.jpg?v=1780110026\"\u003e\u003cp\u003ePorts are laid out for RS485 by default, with connector positions marked for CANBUS, LCD, and heating options.\u003c\/p\u003e\n\u003cimg alt=\"JIKONG JKBMS Bluetooth app dashboard on smartphone showing pack voltage, current, capacity and cell list\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-JK-QB2A8S20P-CR-with-CAN-BUS-RS485-Heating-3S-8S_1587dfeb-c334-40c4-a38f-6339ef9a5757.jpg?v=1780110035\"\u003e\u003cp\u003eBluetooth monitoring in the mobile app provides live pack data plus individual cell voltage and status readings.\u003c\/p\u003e\n\u003cimg alt=\"Mobile app screens for Jikong smart BMS showing device list, settings and cell voltage\/resistance monitoring\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-JK-QB2A8S20P-CR-with-CAN-BUS-RS485-Heating-3S-8S_2785a965-48b5-435c-b639-51f0a4477461.jpg?v=1780110043\"\u003e\u003cp\u003eDevice scanning, configuration menus, and detailed cell measurements are available from the Android\/iOS app.\u003c\/p\u003e\n\u003cimg alt=\"Battery protection infographic listing overcharge, short circuit, overdischarge, overcurrent and over-temp safeguards\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-JK-QB2A8S20P-CR-with-CAN-BUS-RS485-Heating-3S-8S_47952e87-57ce-4a26-a871-d5f0fb97a4ac.jpg?v=1780110052\"\u003e\u003cimg alt=\"Smart energy working mode switching chart for storage, shutdown, standby and normal working modes\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-JK-QB2A8S20P-CR-with-CAN-BUS-RS485-Heating-3S-8S_790faa64-6133-4fdb-8326-b6a2d784f58f.jpg?v=1780110060\"\u003e\u003cp\u003eSmart working modes help manage power use during storage, long idle periods, and normal operation.\u003c\/p\u003e\n\u003cimg alt=\"Specification comparison table for multiple active-balance BMS models including supported strings, current and interfaces\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-JK-QB2A8S20P-CR-with-CAN-BUS-RS485-Heating-3S-8S_ed8e5218-ca04-4f46-a665-4369e4bc959e.jpg?v=1780110068\"\u003e\u003cp\u003eA quick spec table compares supported cell counts, balancing approach, current ratings, and available interfaces across models.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"JIKONG","offers":[{"title":"JK-QB2A8S20P","offer_id":52312095359250,"sku":"jk-3925-1","price":108.97,"currency_code":"USD","in_stock":true},{"title":"JK-QB2A8S20P-CR","offer_id":52312095392018,"sku":"jk-3925-2","price":118.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0863\/2860\/6994\/files\/JKBMS-QB2A8S20P-CR-with-CAN-BUS-RS485-Heating-3S-8S-Active-Balance-BMS-Balance-Current-2A-Continuous-Current-200A-Lifepo4-li-ion-LTO-Battery-JIKONG-2.png?v=1780059417","url":"https:\/\/tsolar.top\/products\/src-jk-3925-jkbms-jk-qb2a8s20p-cr-with-can-bus-rs485-heating-3s-8s-active-balance-bms-balance-current-2a-continuous-current-200a-lifepo4-li-ion-lto-battery-jikong-bms","provider":"TSolar","version":"1.0","type":"link"}