JK BMS Bluetooth

JK BMS Bluetooth reads your JK-BMS directly over Bluetooth and shows you exactly what your battery is doing — on the phone already in your hand.

No gateway. No cloud account. No subscription. Stand in front of the battery and connect.


WHAT IT SHOWS YOU
- State of charge, pack voltage, current and power in real time
- Every cell voltage, with the highest, lowest and imbalance clearly flagged
- Cell-balance status and the average/Δ trend while you watch
- Temperatures, MOSFET state and charge/discharge status
- Active alarms and protections, translated out of JK-BMS error codes


BUILT FOR THE BENCH AND THE RACK
Designed for anyone who owns a JK-BMS pack and wants the truth without a laptop, a cable, or an internet connection. The readout keeps updating while you work, so you can watch a weak cell the moment it shows up.


YOUR DATA STAYS YOURS
This app talks straight to your battery over Bluetooth Low Energy. It does not require an account, does not send your readings anywhere, and works with no internet connection at all. There is no telemetry, no analytics and no third-party SDK phoning home.


PRIVATE BY DEFAULT
- No sign-up, no email, no cloud
- Nothing leaves your phone except what you choose to share
- Optional in-app support if you want to help the project


GOOD TO KNOW
- Requires a JK-BMS with Bluetooth Low Energy
- Read-only: the app never changes your battery's settings
- Works offline; an internet connection is only used for optional updates and the built-in browser flasher for gateway firmware


JK BMS Bluetooth is an independent tool and is not affiliated with, endorsed by, or sponsored by JK-BMS. JK-BMS is a trademark of its respective owner.