Overview
The JKBMS (JIKONG) B2A24S15P is an active balance smart BMS designed for multi-series battery packs, supporting Li-ion, LiFePO4, and LTO chemistries. It provides 2A active balancing (Full State On), 150A continuous charge/discharge capability, built-in Bluetooth for Android/iOS monitoring, and RS485 communication (default), with CANBUS and HEAT function listed as customized options.
Key Features
- Active balancing: 2000mA (2A), Active Balance (Full State On)
- Supported battery strings: Li-ion 7S-24S; LiFePO4 8S-24S; LTO 12S-24S
- Continuous current: 150A (continuous charge current 150A; continuous discharge current 150A)
- Peak discharge current: 300A (MAX 2 min)
- Built-in Bluetooth: supports Android / iOS phone
- Interfaces: RS485 (default); CANBUS/HEAT (customized)
- Same port / common port wiring: wiring method: same port; wiring output: Common Port
- Protection functions listed: over charge protection, over discharge protection, over current protection, short circuit protection, all-in protection (cable drop/poor contact), over temperature protection
- Smart energy working mode switching: Storage Mode, Normal Working Mode, Shutdown, Standby Mode
Specifications
| Model | B2A24S15P |
| Balance method | Active Balance (Full State On) |
| Balance current | 2000mA (2A) |
| Number of battery strings (Li-ion) | 7S to 24S |
| Number of battery strings (LiFePO4) | 8S to 24S |
| Number of battery strings (LTO) | 12S to 24S |
| Power supply mode | The battery pack is self-powered |
| Continuous charge current | 150A |
| Continuous discharge current | 150A |
| Maximum discharge current (MAX 2 min) | 300A |
| Over charge protection current (ADJ) | 10-150A |
| Conductive resistance in main circuit | 0.47mΩ |
| Single cell voltage detection range | 0-5V; error <10mV over full operating range; typical error value <5mV |
| Single cell voltage range | 1-5V |
| Voltage acquisition accuracy | ±5mV |
| 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 accuracy | Error range is less than 8% |
| Total Cycle AH cumulative value | Half of the charge/discharge value |
| Over current detect delay | 2~120S Adjustable |
| 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 |
| Short circuit protection | YES |
| Temp protection | YES |
| Temperature detection (range) | -40 to 125°C |
| Quantity of temperature detection | 3Pcs |
| Operating power consumption | <5mA (without communication) / 15mA (485/CAN) |
| Standby power consumption | <2mA |
| Operating temperature | -40 to 85°C |
| Storing temperature | -40 to 95°C |
| Bluetooth function | Bluetooth built-in; Support for Android / IOS phone |
| Coulomb counter | YES |
| Other interfaces (default) | RS485 |
| Other interfaces (customized) | CANBUS/HEAT |
| Size | 162*102*20mm |
| Wiring output | Common Port |
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)
Bluetooth App Use (as provided)
- Download the specified Bluetooth application and activate the BMS.
- Open the Bluetooth application and find the relevant serial number, then you can check all the data.
Applications
- LiFePO4 / Li-ion / LTO battery packs requiring 7S-24S (Li-ion), 8S-24S (LiFePO4), or 12S-24S (LTO) monitoring and active balancing
- Battery systems requiring Bluetooth monitoring and RS485 communication
For installation guidance or interface selection (RS485/CANBUS/HEAT), contact customer support at https://tsolar.top/ or service@tsolar.top.
Details
Multiple JIKONG smart BMS options are available for different series counts and current ratings, including compact active-balance versions.
Choose the current rating and string count that matches your pack design, with active balancing and communication support across the range.
A layered internal design combines the control board, balancing circuitry, and heavy-current path inside a protected enclosure.
RS485 is the standard communication interface, with CANBUS and heating function listed as customizable options depending on configuration.
Built-in Bluetooth lets you monitor key pack data like total voltage, current, and individual cell readings from a phone.
App controls include battery chemistry selection and detailed cell-level information for setup and ongoing monitoring.
Protection features cover common fault conditions such as overcharge, overdischarge, overcurrent, short circuit, and over-temperature.
Smart energy modes help reduce standby drain during storage while returning to normal operation when charging resumes.
Use the model comparison table to confirm supported string counts, balancing current, continuous current, and interface options.
