After doing a top balance I assembled my 280AH grade B batteries with an Overkill 120A BMS which is being charged by a Renogy DCC50S 50A DC to DC MPPT charger. The charger is set for Lithium batteries but when being charged, one of the batteries exceeds the over voltage threshold and the BMS turns off the charge input. Question, what it the best way to try and get cell 3 to stay in the proper voltage range? Would a separate active cell balancer help in this situation? As you can see in the settings I currently have "Balancer enabled" but this appears to only work when charging and it does not appear to work when a cell over voltage has been reached.
When started the charger is running with solar it was doing 14 amps which makes me think the battery bank is not at fully charged but I am currently doing a significant discharge to try again with a lower SOC.
I know over voltage is a common problem with grade B cells but I would appreciate any suggestions on how best to manage it.
I have attached a pdf with the BMS settings and some pictures of the installation.
When started the charger is running with solar it was doing 14 amps which makes me think the battery bank is not at fully charged but I am currently doing a significant discharge to try again with a lower SOC.
I know over voltage is a common problem with grade B cells but I would appreciate any suggestions on how best to manage it.
I have attached a pdf with the BMS settings and some pictures of the installation.