I have a new install of Multiplus II 3000 with 2 x Pylontech US2000 batteries. One battery is fine but the other is on continuous alarm. I have tried to charge this separately using 52V and 53.2V absorption/float over the past 2 days but it won't move from 40V - Any suggestions?
PS the voltage reading is taken from multiplus II with charging turned off. I also have 100/30 MPPT connected with solar control and this confirms low battery voltage as well.
Thanks in advance