BatRay by ClearEvo.com
ready
DEMO - simulated JK BMS, not a real battery
Disconnected
Press Connect and pick your JK (JiKong) BMS in the Bluetooth chooser - readings stay on your device.
Needs Chrome or Edge with Bluetooth (Android or desktop). The chooser lists every nearby Bluetooth device - pick the BMS (JK units often advertise a plain name).
No BMS nearby? See it live: the author's LFP banks
Alerts Chrome notifications when the battery needs you
Debug raw frames - check these if the numbers look wrong
Upload sends this log to clearevo.com only after you confirm the warning: browser and device details, raw BMS frames and readings, the BMS name and serial. Never the share-link key. Kept 90 days, read by the site owner to fix what you report.

      

Runs in your browser - battery data stays on this device unless you turn on Share live or Show on TV (Google Analytics: visit stats only - verify) - how to use - tools - clearevo - © 2026 Kasidit Yusuf, GPL v2 -

BatRay by ClearEvo.com
JK (JiKong) BMS monitor over Web Bluetooth
Turn an old phone, tablet or notebook into a JK BMS monitor by opening one URL - no Raspberry Pi, no ESP32, nothing to flash.
Share live sends readings to your viewers encrypted on this device with a key that exists only in the share link, so nobody in between can read them. Without sharing, nothing leaves your device. History charts are still to come.