Overview
The JKBMS JK-PB2A16S30P V19 is an inverter BMS with active balancing for family/home energy storage battery packs using LiFePO4, Li-ion, or LTO cells. It supports Bluetooth (built-in) for Android/iOS monitoring, and RS485 communication by default, with CANBUS/HEAT listed as customized interfaces. The battery pack is self-powered and supports 7S–16S (chemistry-dependent) configurations.
Key Features
- Active balance (Full State On): 2000 mA (2A) balance current
- Battery string support: 7S–16S (Li-ion), 8S–16S (LiFePO4), 14S (LTO)
- Bluetooth built-in: supports Android / iOS phones
- Communication: RS485 (default); CANBUS/HEAT (customized)
- Wiring / output: same port / Common Port
- Protections listed: over charge, over discharge, over current, short circuit, over temp, and “all-in protection” (cable drop/poor contact)
- Cell monitoring: supports single cell voltage dropout detection
- Coulomb counter: YES
Specifications
| Model | JK-PB2A16S30P (V19) |
| Battery types | LiFePO4 / Li-ion / LTO |
| 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 (2000 mA) |
| Continuous current | 300A |
| Continuous charge current | 200A |
| Continuous discharge current | 200A |
| Maximum discharge current (MAX 2min) | 350A |
| Current sense shunt | -150A~300A, Error < 0.5%FSR |
| Over charge protection current (ADJ) | 10-200A |
| Over current detect delay | 2~120S Adjustable |
| Conductive resistance in main circuit | 0.47 mΩ |
| Power supply mode | The battery pack is self-powered |
| Total voltage detection range | 0-100V, < 0.5%FSR (FSR = full scale) |
| Single cell voltage detection range | 0-5V, error < 10mV (full operating range), typical error value < 5mV |
| Single cell voltage range | 1-5V |
| Voltage acquisition accuracy | ±5mV |
| 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 |
| SoC estimation accuracy | Error < 8% (operating conditions) |
| Battery remaining capacity error | Error range is 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 | 4Pcs |
| Operating temperature | -40~85°C |
| Storing temperature | -40~95°C |
| Temp protection | YES |
| Short circuit protection | 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 |
| Available selections (as listed) | JK-PB2A16S30P; JK-PB2A16S30P + 4.3 Display |
Applications
- Family/home energy storage battery packs
- LiFePO4 / Li-ion / LTO battery systems requiring active balancing and inverter communication (e.g., Growatt, Deye)
Support
For product selection, wiring questions, and after-sales support, contact service@tsolar.top or visit https://tsolar.top/.
Text Visible in Provided Images (Reference)
The following text was visible in the provided images; some images appear to show different JKBMS models/variants and reference charts, so the content below is transcribed for reference only and should not be treated as JK-PB2A16S30P specifications unless it also appears in the Specifications section above.
- JK-BD6A17S6P: “Active Balance BMS”; “Active Balance Current: 0.6A”; “Adapt Battery Strings: 10S-17S (LTO), 7S-17S (Li-ion), 8S-17S (Lifepo4)”; “Continuous Discharge/Charge Current: 60A”. Device label includes: “Smart Active Balance BMS”, “Type: JK-BD6A17S6P”, “Battery Type: Li-ion/Lifepo4/LTO”, “Balance Method: Active Balance”, “Balance Current: 0.6A”, “Continuous Current: 60A”, “Peak current: 100A”, “Battery Strings: 03-17S”.
- JK-B2A20S20P-H-C: “Active Balance BMS”; “Active Balance Current: 2A”; “Adapt Battery Strings: 10S-20S (LTO), 7S-20S (Li-ion), 8S-20S (Lifepo4)”; “Continuous Discharge/Charge Current: 200A”; “Support Batteries Heating Function (Built-in heating chip)”; “Support RS485 Function Default / Built-in CANBUS Chip”.
- Port labeling diagram text: “CANBUS (Need customization)”; “RS485 (BY default)”; “LCD (BY default)”; “Heat Function (Need customization)”. Pin labels shown: CANBUS: “GND, CAN_H, CAN_L”; RS485: “GND, RX, TX, VCC”; LCD: “K-, K+, GND, B, A, VCC”.
- “SIX SECURITY PROTECTION” graphic: “Over charge Protection: Prevent over-charging Affects battery life”; “Short circuit protection: Automatic protection when short circuit protection”; “Over discharge protection: Prevent the battery from running out”; “over current protection: Prevent the current from exceeding the battery range”; “ALL-IN protection: Prevent cable drop or poor contact”; “Over temp protection: Prevent the battery from over heating”.
- “Smart energy working mode switching” graphic headings: “Storage Mode”, “Normal Working Mode”, “Shutdown”, “Standby Mode”, plus arrows/text including “Charging activates”, “Long time unused”, and “Below shutdown voltage”. (Smaller paragraph text in this graphic is not fully legible from the provided image.)
- Multi-model parameter table image: contains item/model columns including (as visible) “BD4A8S4P, BD4A17S4P, BD4A20S4P, BD4A24S4P, BD6A17S6P, BD6A20S6P, BD6A24S6P, BD6A17S8P, BD6A20S8P, BD6A24S8P, BD6A20S10P” and a second table with items including (as visible) “BD1A20S15P, B1A24S15P, B2A25S15P, B2A20S20P, B2A20S20P-HC, B1A8S20P, B1A8S20P-H, B2A8S20P, B2A8S20P-H, B2A25S5P, B5A25S60P”. Row labels visible include: “Li-ion String supported”, “LiFePO4 String supported”, “LTO String supported”, “Balance method”, “Active balanced current”, “Inner resistance of mainchip”, “Continuous charge current”, “Continuous discharge current”, “MAX discharge current (2X)”, “Overcharge current limit (ADJ)”, “Other Interface (Default)”, “Other Interface (Customized)”, “Dimension (L*M*H MM)”, “Wiring diagram”, “Single cells voltage supported”, “Voltage acquisition accuracy”, “Overcharge protection voltage”, “Overcharge release voltage”, “Overcurrent release delay time”, “Overdischarge protection voltage”, “Overdischarge release voltage”, “Tempreture sensor”, “Tempreture protection”, “Short circuit protection”, “Coulometer”, “Bluetooth supported”. (Most numeric values in this table are not reliably legible from the provided image.)
Details
Active balancing helps keep cell voltages even across the pack for steadier capacity and longer cycle life.
Built-in Bluetooth and RS485 communication make it easy to monitor the pack and integrate with inverter systems.
Layered construction highlights the core control board, connectors, and protective housing used in the inverter BMS design.
Clear port labeling supports cleaner installs when wiring RS485 by default or adding customized CANBUS/heat functions.
Live app data includes total voltage/current, state of charge, temperatures, and a per-cell voltage list.
Use the app to manage multiple devices and review diagnostics like wiring resistance and cell-level status.
Core protections cover overcharge, overdischarge, overcurrent, short circuit, overtemperature, and cable/connection faults.
Smart modes reduce idle drain by moving between storage, standby, normal working, and shutdown states.
Check the table to confirm series count, balancing current, and communication options for your specific pack build.
