{"product_id":"jbd-ap21s004-smart-bms-lifepo4-liion-8s-21s-80a-100a-150a-200a-built-in-bluetooth-with-uart-balancing","title":"JBD AP21S004 Smart BMS Battery Management System 8S-21S 80A-200A for LiFePO4\/Li-ion Packs, Bluetooth\/UART","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe JBD AP21S004 is a Smart BMS (battery management system) for LiFePO4 (3.2 V) or Li-ion (3.7 V) battery packs. It supports 8S to 21S packs (commonly used across 24 V \/ 36 V \/ 48 V \/ 60 V systems) and provides monitoring, configurable parameters, balancing, and communications via Bluetooth and UART (with RS485\/CANBUS functions stated for this series).\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide series support:\u003c\/strong\u003e Automatically identifies battery pack strings from \u003cstrong\u003e8S to 21S\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent range:\u003c\/strong\u003e Continuous current options \u003cstrong\u003e80A \/ 100A \/ 120A \/ 150A \/ 200A\u003c\/strong\u003e; peak current \u003cstrong\u003e240A \/ 300A \/ 360A \/ 450A \/ 600A for 1s\u003c\/strong\u003e (depending on version).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalancing:\u003c\/strong\u003e Balance current \u003cstrong\u003e200mA\u003c\/strong\u003e; balance mode: \u003cstrong\u003eCharge Equalization\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApp + PC monitoring\/setting:\u003c\/strong\u003e Supports phone Bluetooth APP (Xiaoxiang Electric, iOS\/Android) and PC parameter setting via UART\/RS485 tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay support:\u003c\/strong\u003e Supports display; display type: \u003cstrong\u003eUART display\u003c\/strong\u003e (LCD displayer described as optional accessory).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal design notes:\u003c\/strong\u003e Thermal Separation Technology \u003cstrong\u003eV3.0\u003c\/strong\u003e (no temperature affection, more stable); mainboard separated from power board (reduces heat transfer); CPU level thermal silicon (speeds up heat conduction); honeycomb design (instant heat dissipation).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessory ecosystem:\u003c\/strong\u003e UART\/RS485\/Bluetooth\/LCD Display\/Switch\/Power Board options are referenced.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBattery Management System (Smart BMS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAP21S004\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplicable battery type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.7v Li-ion \/ 3.2v LiFePO4 lithium battery pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStrings (series)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8S-21S (supports 8S, 9S, 10S, 11S, 12S, 13S, 14S, 15S, 16S, 17S, 18S, 19S, 20S, 21S)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem voltage (listed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24V \/ 36V \/ 48V \/ 60V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContinuous current (range)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80A-200A (80A \/ 100A \/ 120A \/ 150A \/ 200A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePeak current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e240A \/ 300A \/ 360A \/ 450A \/ 600A for 1s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBalance current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBalance mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCharge Equalization\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUART (BT\/UART\/RS485\/CANBUS functions stated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBluetooth support\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes (Bluetooth type: External Bluetooth; may need to be purchased separately if required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay support\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUART Display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature sensors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1pc internal, 2pcs external\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e202mm * 76mm * 18mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeatures (listed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGood Heat Dissipation, Multiple Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication (listed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectric Products\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBMS\u003c\/li\u003e\n\u003cli\u003eBalance wires\u003c\/li\u003e\n\u003cli\u003eBT module (listed as “Free BT Module”)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSolar street lamp\u003c\/li\u003e\n\u003cli\u003eElectric tool\u003c\/li\u003e\n\u003cli\u003eAGV\u003c\/li\u003e\n\u003cli\u003eEnergy storage UPS\u003c\/li\u003e\n\u003cli\u003eEmergency power\u003c\/li\u003e\n\u003cli\u003eMarine motor\u003c\/li\u003e\n\u003cli\u003eE-bicycle\u003c\/li\u003e\n\u003cli\u003eE-car\u003c\/li\u003e\n\u003cli\u003eLow-speed vehicle\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNotes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUART and Bluetooth use the same port and cannot be used at the same time.\u003c\/li\u003e\n\u003cli\u003eOptional accessories (e.g., UART\/RS485\/LCD display) may need to be purchased separately.\u003c\/li\u003e\n\u003cli\u003eHeat function is described as optional and requires a matching heat module (separate purchase).\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor wiring support, configuration guidance, or to request documentation such as manuals, wiring diagrams, or PC tool instructions, contact customer service at \u003ca href=\"https:\/\/tsolar.top\/\"\u003ehttps:\/\/tsolar.top\/\u003c\/a\u003e or email \u003ca href=\"mailto:service@tsolar.top\"\u003eservice@tsolar.top\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eManuals\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/jbdtools.oss-cn-beijing.aliyuncs.com\/packfile\/JBDTools.zip\" rel=\"noopener\" target=\"_blank\"\u003eJBDTools (PC Tool Software)\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"JBD AP21S004 Smart BMS banner with battery management boards and OEM\/ODM in‑stock messaging\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A.webp?v=1780541971\"\u003e\u003cp\u003eInsert for OEM\/ODM builds or pack assembly projects that need a configurable smart BMS platform.\u003c\/p\u003e\n\u003cimg alt=\"JBD AP21S004 Smart BMS heat-dissipation design graphic highlighting Thermal Separation Technology V3.0\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_fb49e1fd-3d4f-4491-9a15-aacfe69628a3.webp?v=1780541981\"\u003e\u003cp\u003eThermal separation design keeps the control board away from the power section to reduce heat transfer and improve stability.\u003c\/p\u003e\n\u003cimg alt=\"Accessory ecosystem graphic for smart BMS: UART, RS485, Bluetooth module, LCD display, switch and power board options\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_ed5ae9a8-8471-43a4-ac21-bad36205ce01.webp?v=1780541991\"\u003e\u003cp\u003eExpansion options include external Bluetooth, UART tools, RS485\/CAN integration, and an optional UART LCD display for at-a-glance status.\u003c\/p\u003e\n\u003cimg alt=\"Xiaoxiang Electric Bluetooth app interface for monitoring battery SOC and protection status on a smartphone\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_fdf4cb6c-8489-4302-8443-968668a0e6fc.webp?v=1780542001\"\u003e\u003cp\u003eBluetooth app monitoring supports key pack data and protection settings from a phone (iOS\/Android).\u003c\/p\u003e\n\u003cimg alt=\"PC UART parameter-setting screen for smart BMS with read-modify-save configuration options\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_cf77634d-d818-422d-88d9-befa1b6a411b.webp?v=1780542009\"\u003e\u003cp\u003ePC configuration via UART enables read\/modify\/save parameter setup when you prefer a wired connection.\u003c\/p\u003e\n\u003cimg alt=\"Application icons for smart BMS: solar street lamp, electric tools, AGV, energy storage UPS, marine motor and e-vehicles\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_bc32d605-8bde-4e2a-9792-9534d9b8b7a6.webp?v=1780542019\"\u003e\u003cp\u003eCommon uses range from energy storage and UPS systems to e-bikes, low-speed vehicles, marine motors, and industrial equipment.\u003c\/p\u003e\n\u003cimg alt=\"8S battery pack wiring diagram for JBD smart BMS showing balance leads plus B− and C− charge\/discharge connections\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_c3dfb992-c767-4b1c-afa2-354c66c8f874.webp?v=1780542030\"\u003e\u003cp\u003eWiring reference for multi-series packs: connect balance leads in order, then follow the B− and C− terminals for pack negative and charge\/discharge paths.\u003c\/p\u003e\n\u003cimg alt=\"9S battery pack wiring diagram for JBD smart BMS with balance wire order and B−\/C− terminal connections\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_82cde111-3a4e-47e6-b20c-e5c038e5bad4.webp?v=1780542042\"\u003e\u003cimg alt=\"10S battery pack wiring diagram for JBD smart BMS showing balance lead sequence and main positive\/negative routing\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_25736e07-db7a-46f7-ace5-aabe6d79e275.webp?v=1780542054\"\u003e\u003cimg alt=\"JBD AP21S004 Smart BMS lifepo4\/Liion 8S 21S 80A 100A 150A 200A Built-in Bluetooth with UART balancing\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_4611a228-c59a-4142-be05-56d3426c4e19.webp?v=1780542065\"\u003e\u003cimg alt=\"12S battery pack wiring diagram for JBD smart BMS showing balance wire positions and charge\/discharge negative routing\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_6eb0f416-59b4-43e9-a544-67d236806790.webp?v=1780542076\"\u003e\u003cimg alt=\"13S battery pack wiring diagram for JBD smart BMS with balance wire order and pack positive\/negative labels\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_3e9a282d-3845-4b4f-910c-81d242553f02.webp?v=1780542090\"\u003e\u003cimg alt=\"14S battery pack wiring diagram for JBD smart BMS showing balance leads, battery positive, and B−\/C− terminals\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_36fd0405-dab7-4861-86a9-4a80cbc81930.webp?v=1780542100\"\u003e\u003cimg alt=\"15S battery pack wiring diagram for JBD smart BMS with balance lead sequence and total positive\/negative connections\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_08ed48f0-00ce-4083-a973-4db3537a90eb.webp?v=1780542111\"\u003e\u003cimg alt=\"16S battery pack wiring diagram for JBD smart BMS showing balance wire mapping and B−\/C− connections\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_73a0291f-ae5a-4e96-8a0a-63a58fe44f0f.webp?v=1780542122\"\u003e\u003cimg alt=\"17S battery pack wiring diagram for JBD smart BMS with balance lead order and main battery terminals\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_70f474d7-3022-4f4d-bea4-e0f4f1461ae5.webp?v=1780542133\"\u003e\u003cimg alt=\"18S battery pack wiring diagram for JBD smart BMS showing balance lead numbering and charge\/discharge negative path\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_e055e2e2-ddca-48b7-8b9a-f4d5a4db3f92.webp?v=1780542143\"\u003e\u003cimg alt=\"19S battery pack wiring diagram for JBD smart BMS with balance wires and total pack positive\/negative routing\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_2f83111a-1543-4803-a2d3-e950d1d5a07f.webp?v=1780542154\"\u003e\u003cimg alt=\"Wiring diagram for JBD AP21S004 Smart BMS showing 20S balance lead order and B- and C- terminal connections\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_53ab40e1-2654-4344-977f-3b5cfa96a3df.webp?v=1780542165\"\u003e\u003cp\u003eJBD AP21S004 Smart BMS wiring uses a 20S balance lead sequence (0–20) plus B- and C- connections for battery negative and charge\/discharge negative.\u003c\/p\u003e\n\u003cimg alt=\"Wiring diagram for JBD AP21S004 smart BMS showing 21S balance lead order and B-, C- pack connections\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_c22d3c3d-3020-40c7-9a8f-29365115c8b0.webp?v=1780542174\"\u003e\u003cp\u003eThe JBD AP21S004 Smart BMS uses a 21S balance lead harness with clearly labeled B- and C- terminals for pack negative and charge\/discharge wiring.\u003c\/p\u003e\n\u003cimg alt=\"Graphic showing payment method logos plus packaging and shipping photos with warehouse pallets and cargo transport\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_f056da2b-8c4d-47c3-a1c1-1924f1ad1ba9.webp?v=1780542184\"\u003e\u003cimg alt=\"Collage of company certificates including RoHS, ISO 9001, SGS, computer software copyright, patent and test report\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_3b0ea2c6-fc2f-4559-98cf-9ec5d2786959.webp?v=1780542192\"\u003e\u003cp\u003eProduct documentation includes certificates and test reports such as RoHS, ISO 9001, SGS, software copyright, and patent records.\u003c\/p\u003e\n\u003cimg alt=\"Equipment display collage showing SMT production machines, soldering stations, inspection tools, and automated testers\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/JBD-AP21S004-Smart-BMS-lifepo4Liion-8S-21S-80A-100A-150A_d30ca29f-ee00-413b-ba8c-0dde052d6a92.webp?v=1780542203\"\u003e\u003cp\u003eThe production setup includes SMT placement, reflow and wave soldering, AOI inspection, and automated testing equipment for assembly workflows.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"JBD","offers":[{"title":"AP21S004-LFP-21S-80A-B-U-R-C","offer_id":52340148109586,"sku":"jbd-16065560600745271725682470-1","price":53.97,"currency_code":"USD","in_stock":true},{"title":"AP21S004-LFP-21S-100A-B-U-R-C","offer_id":52340148142354,"sku":"jbd-16065560600745271725682470-2","price":59.57,"currency_code":"USD","in_stock":true},{"title":"AP21S004-LFP-21S-150A-B-U-R-C","offer_id":52340148175122,"sku":"jbd-16065560600745271725682470-3","price":73.01,"currency_code":"USD","in_stock":true},{"title":"AP21S004-LFP-21S-200A-B-U-R-C","offer_id":52340148207890,"sku":"jbd-16065560600745271725682470-4","price":94.15,"currency_code":"USD","in_stock":true},{"title":"AP21S004-NMC-21S-80A-B-U-R-C","offer_id":52340148240658,"sku":"jbd-16065560600745271725682470-5","price":53.97,"currency_code":"USD","in_stock":true},{"title":"AP21S004-NMC-21S-100A-B-U-R-C","offer_id":52340148273426,"sku":"jbd-16065560600745271725682470-6","price":59.57,"currency_code":"USD","in_stock":true},{"title":"AP21S004-NMC-21S-150A-B-U-R-C","offer_id":52340148306194,"sku":"jbd-16065560600745271725682470-7","price":73.01,"currency_code":"USD","in_stock":true},{"title":"AP21S004-NMC-21S-200A-B-U-R-C","offer_id":52340148338962,"sku":"jbd-16065560600745271725682470-8","price":94.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0863\/2860\/6994\/files\/L-80A-H.jpg?v=1780502788","url":"https:\/\/tsolar.top\/products\/jbd-ap21s004-smart-bms-lifepo4-liion-8s-21s-80a-100a-150a-200a-built-in-bluetooth-with-uart-balancing","provider":"TSolar","version":"1.0","type":"link"}