Closed tfboy closed 8 months ago
Sorry, forgot to say I'm fairly certain my cells are reaching 3.525V which is the SoC value, but it doesn't seem to do anything. Maybe I should lower this? Is the value her required for just one cell or do all cells need to exceed the SoC reset value for it to actually reset?
In looking at the history, today, one cell did reach 3.54V so why didn't it reset to 100% SoC ?
There are many issues with the same behaviour. JKBMS sets SOC to 95% when reaching OVPR and 100 % when one cell reaches OVP.
The JK firmware is suspect, here is a fudge fix from Youtube.
https://www.youtube.com/watch?v=maTqnSs_XAI
Title is Reset the old JK-BMS to 100% SOC when fully charged with no OVP. Here is how.
But it also covers the new version.
Thank you both. I've not yet tweaked the settings within the JK bluetooth app, but it seems to have reset to 95% today. I'll keep an eye on it and apply the workaround Andy described if I have the problem again. :)
@kommando828 this video is explaining that what I wrote :-)
Describe the problem
Battery SoC is slowly reducing, despite being fully charged. I know there's a "100% reset SoC" function available but I believe only with Bluetooth connection and not RS485 which is what I'm using. I did read a thread which suggested some tweaks and the newer driver would fix the reset value which I believe JK say is not possible over serial, only BLE. Right now, I believe the battery is fully charged showing over 3.5V per cell when solar is providing charge. No current is going in, battery is in absorption, but battery SoC never goes above 83% when I believe it should be 95%+.
Driver version
v1.2.20240227beta
Venus OS device type
Cerbo GX
Venus OS version
v3.13
BMS type
JKBMS / Heltec BMS
Cell count
16
Battery count
1
Connection type
Serial USB adapter to RS485
Config file
Relevant log output
Any other information that may be helpful
No response