I was also having this issue, dropping 1% every day or two.
Upgrading firmware and changing CAN protocols had no effect.
It suddenly went away when I started playing with my ESS settings.
I might have also restarted the battery simultaneously, though I'm not sure I got that right.
Hope this helps.
Hi All.
I am tring to change the CAN protacall to SOROTEC using the BMS monitoring system (V6.1), however the Write button stays greyed out.
I can connect to the Volta stage one battery and read its values.
I have a feeling that I require the elusive BMS Tools V2.M. If so could someone please point me in the right direction to obtain this software?
I have upgraded my firmware using the BMS IPA tool above to VK48100_ZWN_V15.52
Thanks In advance.