Recently updated firmmare on MP1 5 kva 230V from 433 to 497. Its a grid connected system ESS with SMA PV inverter and BMV 702 battery monitor. Recently having good weather so battery was fully charged by midday and charger went from absorb mode to float mode ( 54.4V ABS and 53.8V float ) however voltge just crept up to 55 V by the end of the day . Current was very small around 0.3 A, however its enough to increase voltage on a fully charged battery ( 600AH lithium ) . I have DVCC on using the BMV as a reference voltage . Voltage sense lines currently not connected. Any ideas ?