Collin ev/solar
New Member
Good day all!
I am looking for some guidance. I have been helping my dad with his off grid solar system for a few months now. The short of it is, he has a Big Battery Kong Elite Max 48v that continues to go into cell over voltage (COV) around 53.5v and cell undervoltage(CUV) around 48.5v. I have confirmed the inverter settings multiple times with Big Battery. It is charged by solar at a max of 50amps up to a max of 56v. Big battery has sent me a new BMS and a new balancer. I installed them with now change. At the recommendation of BB I have tried to draw the battery down to 47v then charge to 56v which is difficult because i keep getting the COV and CUV. I have done this many times with no success. It is regularly Cell 1 that is the problem. The only next step i can think of is send the battery back and leave my dad without power for at least a month. Any suggestions would be greatly appreciated. See attached pictures. Also the percent meter is never accurate.
Thanks!!!!
I am looking for some guidance. I have been helping my dad with his off grid solar system for a few months now. The short of it is, he has a Big Battery Kong Elite Max 48v that continues to go into cell over voltage (COV) around 53.5v and cell undervoltage(CUV) around 48.5v. I have confirmed the inverter settings multiple times with Big Battery. It is charged by solar at a max of 50amps up to a max of 56v. Big battery has sent me a new BMS and a new balancer. I installed them with now change. At the recommendation of BB I have tried to draw the battery down to 47v then charge to 56v which is difficult because i keep getting the COV and CUV. I have done this many times with no success. It is regularly Cell 1 that is the problem. The only next step i can think of is send the battery back and leave my dad without power for at least a month. Any suggestions would be greatly appreciated. See attached pictures. Also the percent meter is never accurate.
Thanks!!!!