BMS
Specification comparison
Series range, current ratings, balance current, chemistry, port topology and protocols — the seven parameters that decide whether a board fits your pack.
01Comparison
Verified parameters, side by side
Only verified values appear here. A cell that has not been checked shows “pending” rather than an estimate — one wrong current rating can destroy a pack.
| Parameter | JK-BD6A24S10P | JK-BD6A20S15P | JK-BD6A24S15P | JK-B1A20S15P | JK-B1A24S15P | JK-B2A24S15P | JK-B2A20S20P | JK-B2A24S20P | JK-BD4A8S4P | JK-B1A8S10P | JK-B1A8S20P | JK-B2A8S20P | JK-B2A8S | JK-B2A16S | JK-DZ11B2A24S | JK-DZ08B2A24S | JK-B4A24S | JK-B5A24S | JK-B15A24S |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Series range | Li-ion 7S–24S · LiFePO4 8S–24S · LTO 12S–24S | Li-ion 7S–20S · LiFePO4 8S–20S · LTO 12S–20S | Li-ion 7S–24S · LiFePO4 8S–24S · LTO 12S–24S | Li-ion 7S–20S · LiFePO4 8S–20S · LTO 12S–20S | Li-ion 7S–24S · LiFePO4 8S–24S · LTO 12S–24S | Li-ion 7S–24S · LiFePO4 8S–24S · LTO 12S–24S | Li-ion 7S–20S · LiFePO4 8S–20S · LTO 12S–20S | Li-ion 7S–24S · LiFePO4 8S–24S · LTO 12S–24S | Li-ion 3S–8S · LiFePO4 4S–8S · LTO 6S–8S | Li-ion 3S–8S · LiFePO4 4S–8S · LTO 6S–8S | Li-ion 3S–8S · LiFePO4 4S–8S · LTO 6S–8S | Li-ion 3S–8S · LiFePO4 4S–8S · LTO 6S–8S | Li-ion 2S–8S · LiFePO4 2S–8S · LTO 2S–8S · Lead-acid 2S–8S | Li-ion 2S–16S · LiFePO4 2S–16S · LTO 2S–16S · Lead-acid 2S–16S | Li-ion 2S–24S · LiFePO4 2S–24S · LTO 2S–24S · Lead-acid 2S–24S | Li-ion 2S–24S · LiFePO4 2S–24S · LTO 2S–24S · Lead-acid 2S–24S | Li-ion 2S–24S · LiFePO4 2S–24S · LTO 2S–24S · Lead-acid 2S–24S | Li-ion 2S–24S · LiFePO4 2S–24S · LTO 2S–24S · Lead-acid 2S–24S | Li-ion 2S–24S · LiFePO4 2S–24S · LTO 2S–24S · Lead-acid 2S–24S |
| Continuous current | 100 A | 150 A | 150 A | 150 A | 150 A | 150 A | 200 A | 200 A | 40 A | 100 A | 200 A | 200 A | pending | pending | pending | pending | pending | pending | pending |
| Peak current (duration) | pending | pending | pending | pending | pending | pending | pending | pending | pending | pending | pending | pending | pending | pending | pending | pending | pending | pending | pending |
| Balance current | 0.6 A | 0.6 A | 0.6 A | 1 A | 1 A | 2 A | 2 A | 2 A | 0.4 A | 1 A | 1 A | 2 A | 2 A | 2 A | 2 A | 2 A | 4 A | 5 A | 15 A |
| Chemistry | Li-ion, LiFePO4, LTO | Li-ion, LiFePO4, LTO | Li-ion, LiFePO4, LTO | Li-ion, LiFePO4, LTO | Li-ion, LiFePO4, LTO | Li-ion, LiFePO4, LTO | Li-ion, LiFePO4, LTO | Li-ion, LiFePO4, LTO | Li-ion, LiFePO4, LTO | Li-ion, LiFePO4, LTO | Li-ion, LiFePO4, LTO | Li-ion, LiFePO4, LTO | Li-ion, LiFePO4, LTO, Lead-acid | Li-ion, LiFePO4, LTO, Lead-acid | Li-ion, LiFePO4, LTO, Lead-acid | Li-ion, LiFePO4, LTO, Lead-acid | Li-ion, LiFePO4, LTO, Lead-acid | Li-ion, LiFePO4, LTO, Lead-acid | Li-ion, LiFePO4, LTO, Lead-acid |
| Port type | common-port | common-port | common-port | common-port | common-port | common-port | common-port | common-port | common-port | common-port | common-port | common-port | pending | pending | pending | pending | pending | pending | pending |
| Protocols | Bluetooth, UART (LCD port), RS485 (optional) | Bluetooth, UART (LCD port), RS485 (optional) | Bluetooth, UART (LCD port), RS485 (optional) | Bluetooth, UART (LCD port), RS485 (optional) | Bluetooth, UART (LCD port), RS485 (optional) | Bluetooth, LCD display port, RS485 (optional) | Bluetooth, UART (LCD port), RS485 (optional) | Bluetooth, UART (LCD port), RS485 (optional) | Bluetooth, UART (LCD port), RS485 (optional), CAN (optional) | Bluetooth, UART (LCD port), RS485 (optional), CAN (optional) | Bluetooth, UART (LCD port), RS485 (optional) | Bluetooth, UART (LCD port), RS485 (optional) | BLE, RS485 (optional), CAN (optional) | BLE, RS485 (optional), CAN (optional) | BLE, RS485, CAN (optional) | BLE, CAN, RS485 (optional) | BLE, RS485 (optional), CAN (optional) | BLE, RS485 (optional), CAN (optional) | BLE, RS485 (optional), CAN (optional) |
02Reading the table
What each column is for
A specification table is only useful if the reader knows which number to act on. Here is how each of the seven parameters should be read.
- Series range
- Listed per chemistry, because the same series count means different hardware for LiFePO4 and Li-ion. Take the row for the chemistry you are actually using.
- Continuous current
- The rating for indefinite operation at temperature limit. Size the board against this, not against the peak figure.
- Peak current
- Always stated with its duration. A peak figure without a duration is not a specification — 300 A for 100 ms and 300 A for 10 s are different hardware.
- pending
- Not confirmed against the current manufacturer document. It must not be used for sizing — which is why it is shown rather than left blank.
03Alternative
How to compare without a table
If you are choosing between two models today, the fastest reliable route is to send the configuration and have it checked against the current manual.
What to include
Cell chemistry, series count, expected continuous load and the inverter or charger on the other side. Those four determine the answer; a product name alone does not.
Not sure what these numbers mean for your pack? Read the compatibility guide