EG4-LL batteries balanced in standby?

[BobandSharon]

Hello. I have 5 EG4-LL 48v batteries in my system, and I'm using a EG4 Chargeverter during these winter months. I've read several posts about keeping these batteries healthy during northern latitude winter months by ensuring that they are able to fully balance the cells. One member recommended running the generator and Chargeverter a while longer after the batteries are at 100%, I have been doing this - no problems thus far.
My question is: the display on the EG4 batteries shows the state of charge, battery voltage, incoming or outgoing current (amps) and whether the battery is "discharging," "charging" or in "standby". Even though the batteries may show 100%, they still show that they are "charging". I have been continuing to charge them until they go into "standby", at which point they will accept no more charge current from the Chargeverter, and my generator (an inverter generator) drops to idle. I'm assuming that the batteries BMS is tapering the incoming charge current, and once the batteries go into "standby" that they are charged and balanced. Does this sound right?
I'm very happy with the whole system, just want to be sure I understand what I'm seeing. I should mention that I've set the Chargeverter at 56.2v, and my generator runs best with Chargeverter at 40 amps.
Thanks!
Bob

 

[RadioChief]

A newbie here. I think you are correct in your assumption. At least that is how I have been balancing my EG4-LL batteries. I do not have my solar panels installed yet so I am keeping the cells charged with a pair of chargeverters. About once a week I set them to 56.2 volts and let them charge all 12 batteries to 100%. When all batteries indicate they are in standby and fully charged I drop the chargeverters down to around 53.8 volts. The batteries will drop to around 98%.. Then once a week I turn off the chargeverters completely and let the batteries drop to around 10% and then start the charging process all over again. Basically I want to mimic how a typical PV system would be running daily only I am doing it weekly for now.

 

[S Davis]

The BMS is a safety device and doesn’t tapper current it will disconnect the battery if it reaches maximum or minimum settings.

 

[BobandSharon]

Thank you for your replies. Sounds like I’m on the right track!