I just received 4 of 8 200Ah cells. The other 4 are about a week away still. What I want to do is work on these 4 now. I'd like to attach them into my current system, and get them fully charged or close to it. (My benchtop ps is taking forever), so what I propose is to disconnect my current 24V batt bank, and quick swap out for these 4 cells, no bms at this point, and let my ample pv power bring them up quicker. My CC is epever tracer 4215bn. The way I see it, all I need to do is shut down PV input. Disconnect old batt pos and neg from the distribution block (see pic), and attach the new batt pos and neg bank in its place. Then basically adjust the CC settings for a 12V batt. Then turn on PV input, and let it charge up. My 24V inverter I'll have to turn off of course. I don't think I need to actually disconnect it, just turn it off? Once the new bank is at 14V, I'll terminate charging, shut down PV input, pull them off, and from there I can fine tune them with my bench top ps. I'll re-attach the original 24V bank, re-set my original 24V CC settings, turn back on pv input. now I have got my new 12V bank very close to fully charged in way over half the time it would've taken with my 60V 5A ps. Any unforseen issues with this? Is the order of shut down/disconnect /re-connect ok?
The only issue I see is I have my CC set to 24V instead of Auto, but I figure I can change it to auto prior to doing anything.
The only issue I see is I have my CC set to 24V instead of Auto, but I figure I can change it to auto prior to doing anything.