{"product_id":"src-jk-4222-jkbms-b2a8s30p-hcr-with-can-bus-heating-rs485-with-parallel-interface-3s-8s-active-balance-bms-balance-current-2a-continuous-current-300a-lifepo4-li-ion-lto-battery","title":"JKBMS B2A8S30P-HCR 3S-8S Active Balance BMS 300A, 2A Balancer, RS485\/CAN, Heating, Bluetooth","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"https:\/\/tsolar.top\/collections\/jkbms-jikong-bms\" title=\"JKBMS - JIKONG BMS\"\u003eJKBMS\u003c\/a\u003e B2A8S30P-HCR is an active-balance smart \u003cstrong\u003eBMS\u003c\/strong\u003e for Li-ion, LiFePO4, and LTO battery packs. It supports 3S to 8S (chemistry-dependent), 2A active balancing (Full State On), 300A continuous current, built-in Bluetooth for Android\/iOS monitoring, and communications via RS485 (default) with CAN Bus and heating support. The \u003ca href=\"https:\/\/tsolar.top\/collections\/battery-bms\" title=\"Battery BMS\"\u003eBMS\u003c\/a\u003e uses a common-port (same port) wiring method and is self-powered by the battery pack.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery strings support\u003c\/strong\u003e: 3S-8S (Li-ion), 4S-8S (LiFePO4), 6S-8S (LTO)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive balancing\u003c\/strong\u003e: 2000 mA (2A), Active Balance (Full State On)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent capability\u003c\/strong\u003e: 300A continuous charge \/ 300A continuous discharge; maximum discharge current (MAX 2 min): 450A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCell voltage monitoring\u003c\/strong\u003e: single cell voltage detection range 0-5V; error \u0026lt;10 mV over full operating range; typical error value \u0026lt;5 mV; supports single-cell voltage dropout detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal pack voltage detection\u003c\/strong\u003e: detection range 0-100V; \u0026lt;0.5% FSR (FSR = full scale)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent sensing\u003c\/strong\u003e: shunt -150A to 300A; error \u0026lt;0.5% FSR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoC \u0026amp; capacity estimation\u003c\/strong\u003e: SoC estimation accuracy error \u0026lt;8% (operating conditions); remaining capacity error range \u0026lt;8%; total cycle Ah cumulative value is half of the charge\/discharge value\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtections (six security protection)\u003c\/strong\u003e: over charge protection, over discharge protection, over current protection, short circuit protection, ALL-IN protection (cable drop\/poor contact), over temp protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart energy working mode switching (text shown)\u003c\/strong\u003e: Storage Mode; Normal Working Mode (charging activates); Shutdown (below shutdown voltage); Standby Mode (standby after set time, 1-30 days can be set)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth operation (text shown)\u003c\/strong\u003e: download the specified Bluetooth application and activate the BMS; open the Bluetooth application, find the relevant serial number, then check data\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\u003eB2A8S30P-HCR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported battery strings (Li-ion)\u003c\/td\u003e\n\u003ctd\u003e3S-8S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported battery strings (LiFePO4)\u003c\/td\u003e\n\u003ctd\u003e4S-8S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported battery strings (LTO)\u003c\/td\u003e\n\u003ctd\u003e6S-8S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring method \/ output\u003c\/td\u003e\n\u003ctd\u003eSame port \/ Common Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply mode\u003c\/td\u003e\n\u003ctd\u003eBattery pack 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 (2000 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductive resistance in main circuit\u003c\/td\u003e\n\u003ctd\u003e0.3 mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous charge current\u003c\/td\u003e\n\u003ctd\u003e300A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous discharge current\u003c\/td\u003e\n\u003ctd\u003e300A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum discharge current (MAX 2 min)\u003c\/td\u003e\n\u003ctd\u003e450A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOver charge protection current (adjustable)\u003c\/td\u003e\n\u003ctd\u003e10-300A\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\u003eSingle cell voltage detection range\u003c\/td\u003e\n\u003ctd\u003e0-5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage acquisition accuracy\u003c\/td\u003e\n\u003ctd\u003e±5 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle cell voltage error\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;10 mV (full operating range); typical \u0026lt;5 mV\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent sense shunt range\u003c\/td\u003e\n\u003ctd\u003e-150A to 300A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent sensing error\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.5% FSR\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 range\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\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\u003eOperating power consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5 mA (without communication) \/ 15 mA (485\/CAN)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby power consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterfaces (default)\u003c\/td\u003e\n\u003ctd\u003eRS485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterfaces (customized)\u003c\/td\u003e\n\u003ctd\u003eCANBUS \/ HEAT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth function\u003c\/td\u003e\n\u003ctd\u003eBuilt-in; support for Android \u0026amp; iOS phone\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\u003eTemp 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\u003eSize\u003c\/td\u003e\n\u003ctd\u003e153*136*18mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eInterfaces \u0026amp; Terminal Labels (text shown)\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHigh-current terminals shown: B+, B-, P-, C-\u003c\/li\u003e\n\u003cli\u003eBottom connector labels shown: temperature line, GPS, CAN\/RS485, and cell sense leads (example shown as 8+ to 1+)\u003c\/li\u003e\n\u003cli\u003eConnector\/pin text shown: \n    \u003cul\u003e\n\u003cli\u003eCANBUS (need customization): GND, CAN_H, CAN_L\u003c\/li\u003e\n\u003cli\u003eRS485 (by default): GND, RX, TX, VCC\u003c\/li\u003e\n\u003cli\u003eLCD (by default): K-, K+, GND, B, A, VCC\u003c\/li\u003e\n\u003cli\u003eHeat function (need customization): Heat Function\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eParallel Module (text shown)\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eParallel module name shown: JK-BLMK-5A (Parallel Module)\u003c\/li\u003e\n\u003cli\u003eWiring diagram title shown: “JKBMS Parallel Module JK-BLMK-5A Wiring Diagram”\u003c\/li\u003e\n\u003cli\u003eParallel module terminal labels shown: B+ \/ DO, and B- B- P- P-\u003c\/li\u003e\n\u003cli\u003eDiagram text shown: “Through the cable and cable B connects two battery pack”, with “Cable a” and “Cable b” between Battery pack 1 and Battery pack 2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eModels \/ Options\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eB2A8S30P-HCR\u003c\/li\u003e\n\u003cli\u003eB2A8S30P-HCR + 3.2LCD\u003c\/li\u003e\n\u003cli\u003eB2A8S30P-HCR + Parallel Module\u003c\/li\u003e\n\u003cli\u003eB2A8S30P-HCR + Parallel Module + 3.2LCD\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLiFePO4 \/ Li-ion \/ LTO battery packs within supported series range (up to 8S)\u003c\/li\u003e\n\u003cli\u003eOff-grid solar energy storage, RV\/van power systems, marine house batteries, backup battery packs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor pre-sales selection and wiring confirmation (RS485\/CANBUS\/heating\/LCD\/parallel options), contact support at \u003ca href=\"https:\/\/tsolar.top\/\"\u003ehttps:\/\/tsolar.top\/\u003c\/a\u003e or \u003ca href=\"mailto:service@tsolar.top\"\u003eservice@tsolar.top\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eNotes on Other Text Visible in the Provided Images\u003c\/h2\u003e\u003cul\u003e\u003cli\u003eSome images include model labels and specification callouts for other JK BMS variants (for example: “JK-BD6A17S6P” and “JK-B2A20S20P-H-C”). These labels are separate from the B2A8S30P-HCR specifications listed above.\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"Common-port wiring diagram for JKBMS smart BMS, showing B+, B-, P- connections and cell tap leads\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A8S30P-HCR-with-CAN-Bus-Heating-RS485-with-Parallel.jpg?v=1780109590\"\u003e\u003cp\u003eCommon‑port wiring keeps charge and discharge on one port while monitoring each cell tap for accurate protection and balancing.\u003c\/p\u003e\n\u003cimg alt=\"Parallel battery pack connection diagram using JKBMS device with cable A and cable B between two packs\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A8S30P-HCR-with-CAN-Bus-Heating-RS485-with-Parallel_87b449b9-0c8d-4e89-bc29-873b94ff9e09.jpg?v=1780109600\"\u003e\u003cp\u003eParallel wiring guidance helps connect two battery packs safely while maintaining proper BMS control and sensing.\u003c\/p\u003e\n\u003cimg alt=\"JKBMS parallel module JK-BLMK-5A wiring diagram with controller, charger and cell balance lead layout\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A8S30P-HCR-with-CAN-Bus-Heating-RS485-with-Parallel_b20208fe-3f7c-489c-a6af-f8306ffe670c.jpg?v=1780109608\"\u003e\u003cp\u003eFor multi-pack setups, the optional parallel module wiring layout clarifies controller, charger, and balance-lead routing.\u003c\/p\u003e\n\u003cimg alt=\"smart active-balance BMS product banner with key features overlay and wired harness connection\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A8S30P-HCR-with-CAN-Bus-Heating-RS485-with-Parallel_8438cdef-003e-4ca8-9603-1c8d91495e24.jpg?v=1780109615\"\u003e\u003cp\u003eActive balancing and smart monitoring are built into the compact BMS design for lithium battery packs.\u003c\/p\u003e\n\u003cimg alt=\"smart active balance BMS banner highlighting communications options and battery string support\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A8S30P-HCR-with-CAN-Bus-Heating-RS485-with-Parallel_5e5fcbfa-5acf-44e8-b0c7-c5fcd8548fda.jpg?v=1780109623\"\u003e\u003cp\u003eRS485 communication is supported by default, with optional CAN and heating features depending on configuration.\u003c\/p\u003e\n\u003cimg alt=\"Exploded view of the BMS enclosure showing stacked circuit boards, connectors, and internal components\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A8S30P-HCR-with-CAN-Bus-Heating-RS485-with-Parallel.png?v=1780109632\"\u003e\u003cp\u003eInternal board layout integrates power components, sensing circuits, and connectors in a protected enclosure.\u003c\/p\u003e\n\u003cimg alt=\"Connector pinout close-up for CAN\/RS485, GPS, LCD and heating headers on the BMS main board edge\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A8S30P-HCR-with-CAN-Bus-Heating-RS485-with-Parallel_8c4225eb-b070-4bd5-a652-3b6a5f2f462d.jpg?v=1780109645\"\u003e\u003cp\u003eClearly labeled headers simplify connecting CAN\/RS485, GPS, and optional LCD or heating functions.\u003c\/p\u003e\n\u003cimg alt=\"Bluetooth app screen on smartphone displaying pack voltage, current, SoC and per-cell voltage list\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A8S30P-HCR-with-CAN-Bus-Heating-RS485-with-Parallel_fdbaedda-8cd4-44d1-bc09-0ba20fd9559b.jpg?v=1780109653\"\u003e\u003cp\u003eBluetooth monitoring provides real-time pack status plus per-cell voltage and resistance data on a phone.\u003c\/p\u003e\n\u003cimg alt=\"mobile app screenshots for device list, settings, and live battery status with cell voltage grid\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A8S30P-HCR-with-CAN-Bus-Heating-RS485-with-Parallel_2f669ad6-45fa-40a7-870a-915a8bcfe4e6.jpg?v=1780109660\"\u003e\u003cp\u003eApp screens cover device discovery, configuration options, and a live dashboard for quick diagnostics.\u003c\/p\u003e\n\u003cimg alt=\"Six security protection infographic listing overcharge, overdischarge, short circuit, overcurrent and temperature\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A8S30P-HCR-with-CAN-Bus-Heating-RS485-with-Parallel_eb9eab96-66db-4f94-b8ea-bce0d5e2671e.jpg?v=1780109669\"\u003e\u003cp\u003eSix protection functions help safeguard the pack during charging, discharging, faults, and overheating conditions.\u003c\/p\u003e\n\u003cimg alt=\"Smart energy working mode switching chart for storage, normal working, shutdown and standby modes\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A8S30P-HCR-with-CAN-Bus-Heating-RS485-with-Parallel_a8d8ecfc-6abe-4ce9-9d35-5f76457ab075.jpg?v=1780109681\"\u003e\u003cp\u003eEnergy modes include storage, standby, normal working, and shutdown behavior to reduce idle drain when needed.\u003c\/p\u003e\n\u003cimg alt=\"Specification table for multiple BMS models including supported strings, balance current and interfaces\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JKBMS-B2A8S30P-HCR-with-CAN-Bus-Heating-RS485-with-Parallel_4b0ae44e-8d2c-47a9-b7e3-7152e35015f4.jpg?v=1780109689\"\u003e\u003cp\u003eA detailed comparison table lists supported chemistries, string counts, balancing, and interface options across models.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"JIKONG","offers":[{"title":"B2A8S30P-HCR","offer_id":52312088576274,"sku":"jk-4222-1","price":121.97,"currency_code":"USD","in_stock":true},{"title":"B2A8S30P-HCR+3.2LCD","offer_id":52312088609042,"sku":"jk-4222-2","price":133.67,"currency_code":"USD","in_stock":true},{"title":"B2A8S30P-HCR+Parallel Module","offer_id":52312088641810,"sku":"jk-4222-3","price":157.07,"currency_code":"USD","in_stock":true},{"title":"B2A8S30P-HCR+Parallel Module+3.2LCD","offer_id":52312088674578,"sku":"jk-4222-4","price":170.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0863\/2860\/6994\/files\/JKBMS-B2A8S30P-3S-8S-Active-Balance-BMS-Balance-Current-2A-Continuous-Current-300A-Lifepo4-li-ion-LTO-Battery-5_36487255-af1a-4bdc-a56a-c763226159d4.jpg?v=1780059309","url":"https:\/\/tsolar.top\/products\/src-jk-4222-jkbms-b2a8s30p-hcr-with-can-bus-heating-rs485-with-parallel-interface-3s-8s-active-balance-bms-balance-current-2a-continuous-current-300a-lifepo4-li-ion-lto-battery","provider":"TSolar","version":"1.0","type":"link"}