BFL13 wrote:
Some "sales" statements here, but also some possibly good info of interest.
One thing is they found longest life (most cycles) was to charge at 14.4v but at lower amps at 0.3C.
Some LFP owners on here ISTR have taken to charging at lower voltages hoping for longer battery life. Perhaps it needs to be established which is correct--lower amps or lower voltage?
They say 14.4 vs 14.6 to reduce stress, and recommend their own charger (of course!) which is single stage 14.4--BUT they say shut charging down-disconnect- once the charger says the batt is full. (light comes on---what makes that light come on? oh well)
They are strongly against floating! see why.
Anyway, it covers some of what has come up on here lately.
https://dakotalithium.com/2021/09/22/how-to-charge-dakota-lithium-and-lifepo4-batteries/
I am not sure of most intentionaly chose a converter that charges at 0.3C or less. I think its a matter for most (myself included) the converter in my camper is a 45amp and I put in a 310AH LFP battery so I chagre at 0.15C from that and my solar will put out 23Amp at peak so the fastest I can charge is 0.22C even if I had a 90Amp converter that would still be less than 0.3C. so its more of an issue of how expensive of a converter/charger do you want to buy and if you only use 100AM over night is it worth the extra money to replace that in one hour as aposed to a few hours? so in a way just comon sence is limiting the charge rate. the thing is in the space a person can put a 200AH 6V set up, I could easily put two, maybe three, 310AH batteries but I would still have that same charging setup except Li compatable. and I do run mine at 14.6 charge and it holds for 90 min after reaching full charge then drops to 13.5. this is all set up on my solar as my converter is just a single stage for now so it only gets used if I need a quicker deeper charge, but for the most part the solar has me charged up before noon if I run the furnice over night.
Steve