SOC less than 99% (ie lost SOC calibration)

o If the combination of inverter settings, operating mode, load power consumptions and
available solar power does not allow the battery to reach 100% this is NORMAL (ie
B.M.S has not necessarily lost S.O.C synchronization). This is a user error. 
o If the battery has reached a sufficiently high voltage to be fully charged (ie above
53v) yet the SOC is low (ie 75%) then the B.M.S has lost S.O.C accuracy and has
not reached S.O.C calibration event for a long time. 

This can be due to one or more of
the following reasons:
▪ Inverters fault, the inverter charge voltage never reaches the specified /
instructed value because its Voltage calibration is out and it may read the
battery Voltage 0.4 higher than what it really is. You can see that if you
compare the B.M.S reading for battery V (using cloudlink) or that of a hand
held DC meter with that of the inverter (read the LCD on the inverter).
▪ User error, combination of inverter settings, operating mode, load power
consumptions and available solar power does not allow the battery to reach
100%