Hi Javier,
does the system still charge oder does the SOC change to 100% and stops charging?
The 55.2V come from the JK-BMS and this is fine (RCVCell# → 3.4516=55.2v)
I see you have 100% SOC with 3.445v and start balance with 3.45v … so basically you balance only if at least one cell goes above 3.45v
Just out of curiosity.. which batteries are you using? EVE MB31?