Whether you are running a JK-PB1A16S10P or the powerful JK-PB2A16S30P, keeping your BMS updated is critical for ensuring accurate communication with your inverter and maximizing battery life.
Download Center
Please download the correct file matching your specific hardware version.
CRITICAL WARNING: Flashing the wrong firmware file can “brick” your BMS (render it unusable). Please check your Hardware Version in the JK BMS App under “Device Info” before downloading.
| Model | Firmware Name | Version | Link |
| JK-PB1A16S10P | 069-JK-PB1A16S10P-V19.21.jkbms | V19.21 | Download |
| JK-PB2A16S10P | 100-JK-PB2A16S10P-V19.21.jkbms | V19.21 | Download |
| JK-PB1A16S15P | 070-JK-PB1A16S15P-V19.21.jkbms | V19.21 | Download |
| JK-PB2A16S15P | 072-JK-PB2A16S15P-V19.21.jkbms | V19.21 | Download |
| JK-PB2A16S20P | 073-JK-PB2A16S20P-V19.21.jkbms | V19.21 | Download |
| JK-PB2A16S30P | 096-JK-PB2A16S30P-V19.21.jkbms | V19.21 | Download |
What’s New? (Change Log)
V19.21 Upgrade logs
- Optimize the current calculation method to improve accuracy.
- Optimize the parallel logic of the PB series protection board, so that the slave packs can also monitor all the information of the batteries.
- Fix some known bugs.
-@2025-12-04 by JKBMS
V19.18 Upgrade logs
- Fix some known bugs.
- Guruvat CAN protocol optimization.
- Add SOC above trigger to Dry contact.
-@2025-11-06 by JKBMS(JIKONG)
Preparation Before Upgrading
To ensure a smooth update and avoid failure, please follow these safety rules:
- Keep it Powered: Ensure your phone (for App update) or Laptop (for PC update) has sufficient battery.
- Stay Close: Keep your phone within 1 meter (3 feet) of the BMS to ensure a strong Bluetooth signal.
- Reduce Load: While the BMS supports online updates, we highly recommend performing the update with no load or low load (turn off heavy inverters) to prevent electrical noise interference.
- Do Not Interrupt: Once the progress bar starts, DO NOT exit the App or turn off the battery power.
Upgrade Guide
—Last edited on December 17, 2025, with firmware updated to version V19.21.
Energiepanda can currently deliver JK PB series BMS quickly to customers in North America, Europe, Australia, Asia and South Africa
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