Overview
The JKBMS PB2A16S15P is an active balance inverter BMS for family energy storage battery packs, supporting LiFePO4, Li-ion, and LTO chemistries. It provides 2A active balancing, 150A continuous charge/discharge capability, built-in Bluetooth monitoring (Android/iOS), and RS485 communication (CANBUS/HEAT available as customized options). The PB series energy storage inverter BMS (PB2A16S20P, PB2A16S15P, PB1A16S15P, PB1A16S10P) is upgraded to the latest V19 version; all orders placed after June 1, 2025 are set to V19 by default.
Key Features
- Battery string support: 7S to 16S (Li-ion: 7S-16S; LiFePO4: 8S-16S; LTO: 14S)
- Active balancing: Active Balance (Full State On), balance current 2000mA (2A)
- Current capability: 150A continuous charge current, 150A continuous discharge current; maximum discharge current 300A (MAX 2min)
- Communication & monitoring: Bluetooth built-in (support for Android/IOS phone); RS485 interface (default); CANBUS/HEAT (customized)
- Protection functions: over charge, over discharge, over current, short circuit, over temperature, and cable drop/poor contact (“all-in”) protection
- Low power consumption: operating power consumption <5mA (without communication) / 15mA (485/CAN); standby power consumption <2mA
- Wiring output: common port (same port)
For setup and inverter communication questions (e.g., Growatt, Deye, etc.), contact customer support at https://tsolar.top/ or service@tsolar.top.
Specifications
| Model | PB2A16S15P |
| Supported battery chemistry | LiFePO4 / Li-ion / LTO |
| Number of battery strings | 7S to 16S |
| Number of battery strings (Li-ion) | 7S-16S |
| Number of battery strings (LiFePO4) | 8S-16S |
| Number of battery strings (LTO) | 14S |
| Balance method | Active Balance (Full State On) |
| Balance current | 2A (2000mA) |
| Continuous charge current | 150A |
| Continuous discharge current | 150A |
| Continuous current | 150A |
| Maximum discharge current (MAX 2min) | 300A |
| Over charge protection current (ADJ) | 10-150A |
| Current sense shunt | -150A~300A, error <0.5%FSR |
| Total voltage detection range | 0-100V, <0.5%FSR (FSR = full scale) |
| 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 |
| Support single cell voltage dropout detection | Yes |
| 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 |
| Conductive resistance in main circuit | 0.65mΩ |
| Power supply mode | The battery pack is self-powered |
| Operating power consumption | <5mA (without communication) / 15mA (485/CAN) |
| Standby power consumption | <2mA |
| SoC estimation accuracy | Error <8% (operating conditions) |
| Battery remaining capacity | Error range is less than 8% |
| Total Cycle AH cumulative value | Half of the charge/discharge value |
| Temperature detection | -40~125℃ |
| Quantity of temperature detection | 4Pcs |
| Operating temperature | -40~85°C |
| Storing temperature | -40~95℃ |
| Temp protection | YES |
| Short circuit protection | YES |
| Coulomb counter | YES |
| Bluetooth function | Support for Android & IOS phone |
| Other interfaces (default) | RS485 |
| Other interfaces (customized) | CANBUS/HEAT |
| Wiring output | Common Port |
| Size | 300*100*18mm |
Bluetooth App Notes
- Download the specified Bluetooth application and activate the BMS.
- Open the Bluetooth application and find the relevant serial number, then check all data.
Interfaces (labels shown)
- 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)
- GPS (label shown)
Working Mode Switching (as described)
- Storage Mode: for transportation/storage/offline or wireless transmission off mode; does not consume battery pack current.
- Normal Working Mode: inserting the charger in storage mode and off mode returns the BMS to normal working mode; protection/equalization/communication functions return to normal working.
- Standby Mode: when the battery pack is static (no charge/discharge current and no equilibrium current), enters standby after the set time (1-30 days can be set) is exceeded.
- Shutdown: automatic shutdown voltage; shuts down when a cell falls below the shutdown voltage.
Applications
- Home/family energy storage battery packs
- LiFePO4 / Li-ion / LTO battery systems requiring active balancing and inverter communication
- Inverter BMS use cases (RS485 default; CANBUS/HEAT optional) for systems referenced such as Growatt and Deye
Notes on Additional Image Text
- Some images include text for other JKBMS models (e.g., JK-BD6A17S6P and JK-B2A20S20P-H-C) and show their listed parameters; these are not specifications of the PB2A16S15P unless stated elsewhere on this page.
Details
Built for home energy storage packs, the PB-series inverter BMS combines active balancing, high current handling, and smart communications in one compact unit.
Bluetooth phone monitoring and RS485 come standard, with CANBUS/HEAT available as customized options for inverter integration.
A layered internal layout pairs robust power components with multi-connector harness interfaces for clean pack wiring.
Clearly labeled ports make it easier to route comms, display, and accessory connections during installation.
Live status in the app helps track pack voltage, current, state of charge, and per-cell readings at a glance.
Setup screens support common chemistries and provide diagnostic views like wiring resistance and cell-by-cell details.
An all-in protection set covers charging, discharging, temperature, short circuit, and cable/connection faults.
Smart working modes reduce standby drain during long idle periods while returning to normal operation when charging resumes.
Use the model comparison table to confirm supported series count, balancing current, and communication interfaces for your battery pack.
