Overview
JKBMS B1A8S10P-HC is an active balance smart BMS for 3S-8S battery packs, supporting Li-ion, LiFePO4, and LTO chemistries. It integrates 1A active balancing, Bluetooth monitoring (Android/iOS), and communication expansion via RS485 (default) with CANBUS and battery heating function available as customization options.
Key Features
- Battery strings supported: Li-ion 3S-8S; LiFePO4 4S-8S; LTO 6S-8S
- Active balancing: Active Balance (Full State On), balance current 1000mA (1A)
- Current capability: 100A continuous charge / 100A continuous discharge; maximum discharge current 200A (MAX 2min)
- Bluetooth built-in: Supports Android / iOS phone; view operating data via the specified Bluetooth application
- Communications: RS485 interface (default); CANBUS and HEAT listed as customized options
- Protections: over charge protection, over discharge protection, over current protection, short circuit protection, over temperature protection, and “all-in protection” (prevents cable drop or poor contact)
- Power supply mode: battery pack self-powered
- Operational modes: Storage Mode, Normal Working Mode, Standby Mode (1–30 days can be set), Shutdown (auto shutdown when a cell falls below the shutdown voltage)
Specifications
| Model | JKBMS B1A8S10P-HC |
|---|---|
| Battery strings (Li-ion) | 3S-8S |
| Battery strings (LiFePO4) | 4S-8S |
| Battery strings (LTO) | 6S-8S |
| Wiring output | Common Port |
| Balance method | Active Balance (Full State On) |
| Balance current | 1A (1000mA) |
| Conductive resistance in main circuit | 0.65mΩ |
| Continuous charge current | 100A |
| Continuous discharge current | 100A |
| Maximum discharge current (MAX 2min) | 200A |
| Over charge protection current (ADJ) | 10-100A |
| Single cell voltage range | 1-5V |
| Single cell voltage detection range | 0-5V; error < 10mV over full operating range; typical error value < 5mV |
| Voltage acquisition accuracy | ±5mV |
| Single cell voltage dropout detection | Supported |
| Over charge protection voltage | 1.2-4.35V Adjustable |
| Over charge release voltage | 1.2-4.35V Adjustable |
| Over discharge protection voltage | 1.2-4.35V Adjustable |
| Over discharge release voltage | 1.2-4.35V Adjustable |
| Over current detect delay | 2~120S Adjustable |
| Total voltage detection range | 0-100V; < 0.5%FSR (FSR = full scale) |
| Current sense shunt | -150A~300A; error < 0.5%FSR |
| SoC estimation accuracy | Error < 8% (operating conditions) |
| Battery remaining capacity error | Less than 8% |
| Total Cycle AH cumulative value | Half of the charge/discharge value |
| Operating power consumption | < 5mA (without communication) / 15mA (485/CAN) |
| Standby power consumption | < 2mA |
| Temperature detection | -40~125°C |
| Quantity of temperature detection | 3Pcs |
| Operating temperature | -40~85°C |
| Storing temperature | -40~95°C |
| Short circuit protection | YES |
| Temp protection | YES |
| Coulomb counter | YES |
| Bluetooth function | Support for Android & IOS phone |
| Other interfaces (default) | RS485 |
| Other interfaces (customized) | CANBUS/HEAT |
| Size | 153*136*18mm |
Interface / Pin Notes
- CANBUS (need customization): GND, CAN_H, CAN_L
- RS485 (by default): GND, RX, TX, VCC
- LCD (by default): K-, K+, GND, B, A, VCC
- Heat function (need customization): Heat Function connector shown
Applications
- 3S-8S Li-ion battery packs
- 4S-8S LiFePO4 battery packs
- 6S-8S LTO battery packs
For pre-sales selection (RS485 vs customized CANBUS/HEAT) and configuration support, contact customer service at https://tsolar.top/ or service@tsolar.top.
Details
Active-balancing JK smart BMS hardware is available in multiple series and current ratings; confirm the exact model on the label before ordering.
Communication and add-on functions vary by version—RS485 is commonly standard, with CANBUS and heating offered on select models.
Internal board layout highlights a compact, integrated design with multiple plug-in headers for balance leads and accessories.
Connector labeling makes it easier to wire RS485/CAN lines, LCD lead, and optional heating interface correctly.
Bluetooth monitoring in the mobile app provides real-time pack voltage/current plus per-cell voltage and balance information.
The app supports device scanning and chemistry selection (Li-ion/LiFePO4/LTO) alongside a detailed status dashboard.
Multiple protection functions help safeguard the battery pack during charging, discharging, and fault conditions.
Smart working modes support storage, standby, and automatic shutdown behavior to reduce battery drain when idle.
Use the parameter table to match string count, continuous current, and interface options to your specific battery pack.
