Lifepo4 battery charging confusion
I bought 2 Lossigy 100ah batteries and replaced the converter on my 2021 Grand Design 381m with a 60a powermax pm4. So far so good. The Powermax charges at around 40a, which is 20a a piece and the adv...
Forum Discussion
We have 5 206ah SOK LFP batteries that are only charged via solar & MPPT controller. My OEM converter is unplugged.
My settings are 14.2 volts bulk charge, then 20 minutes on absorb charge, same voltage, then float at 13.6 volts.
My MPPT controller has and will put out 100 amps which would be 20 amps per battery. Obviously, that output varies by time of day and season.
You don't have to fully charge LFP batteries nor do you have to charge at the 50% discharged point like flooded batteries. So this gives you a lot of flexibility when running the generator.
Answers here concerning the voltage settings will vary quite a bit. I gave you my opinion.
A little off topic, but you mentioned knowing not to run large loads off your batteries/inverter. We run an A/C unit (off solar & batteries) in the RV while traveling. Our drives typically are 3 hours or less. So you can run large loads IF your inverter and battery bank are sufficiently sized.
My settings are 14.2 volts bulk charge, then 20 minutes on absorb charge, same voltage, then float at 13.6 volts.
My MPPT controller has and will put out 100 amps which would be 20 amps per battery. Obviously, that output varies by time of day and season.
You don't have to fully charge LFP batteries nor do you have to charge at the 50% discharged point like flooded batteries. So this gives you a lot of flexibility when running the generator.
Answers here concerning the voltage settings will vary quite a bit. I gave you my opinion.
A little off topic, but you mentioned knowing not to run large loads off your batteries/inverter. We run an A/C unit (off solar & batteries) in the RV while traveling. Our drives typically are 3 hours or less. So you can run large loads IF your inverter and battery bank are sufficiently sized.
