3.2V 300Ah EVE 304k LiFePO4 Cells 310Ah Battery Grade A Lithium Iron Phosphate Deep Cycle, Power Supply for RV, Boat, Golf Cart, Motor, UPS, Fish Finder, Lawn Mower, Off Grid, Solar Systems

Batteries came in a well packaged box and delivered early. I used a JK BMS to maintain the right voltage in the 4 batteries. I replaced the 2 AGM batteries in my RV. This upgrade was equal to 6 AGM batteries.

So far so good. Bought three sets of 4 batteries each. Shipping foe the last set was delayed by a couple of weeks due to availability.I assembled each 12V battery with a BMS and tested @ 25 Amp Discharge rate and ended with a 11.1 Volts at BMS(-) and Battery (+) terminal.The lowest tested at 288AH the highest at 292AH. There are many variables that could account for the slightly low test, so I am assuming that I undercharged by a bit, stopped the test at too high a voltage or my equipment is not accurate enough. One cell was slightly fatter than the others otherwise the physical condition was good. I haven't put them into service yet, so I will update later if I find anything noteworthy.My Application:Marine Inverter application 3KW Inverter (Freedom SW3012) with 150Amp ChargerConfigured cells as 3 parallel at 12V(4 Cells)Daly 200 Amp BMS with parallel module.Update 5-2023:I installed a 200Amp breaker/switch on each battery in order to be able to isolate problems on the fly and to enable troubleshooting/testing. I reprogrammed the inverter/charger for this battery/BMS combination. The inverter charges at 150 amps with no problems with 2 or 3 batteries in parallel, but with one battery it becomes unstable and the inverter/charger trips with an "over voltage" error message. If anyone has any ideas on this please let me know. So I have one cycle on the installed system and am ready to try it out for real. I will update if I learn anything new.UPDATE 3-8-2024: One cell failed down to 2.4Volts, others on the same BMS were 3.2Volts. This is frustrating since this vendor does not sell single cells. I know it is not advisable to use cells of different ages; but $600 because one cell failed?

Muy bien