More on LFP Charging
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 o...
Forum Discussion
Durb wrote:
What does "C" mean when referring to current?
Relates to the Capacity of the battery bank in AH and how much of that figure to use as your initial charging current (which holds at that until it tapers)
Edit--this all does not apply very much to solar, where the amps rise in the morning and taper in the afternoon.
So for a 100AH bank 0.3C is 30 amps.
Many LFPs will say they can take 1C as "max" but prefer you keep it at 0.5C or less. Some specify max of 0.5C if say their BMS wiring is too thin to take more amps. (That would also affect their max discharge amps I guess---not sure--anybody know? )
FLAs and AGMs can also handle 0.3C, but 0.25C is preferred, so "fast charging" comparisons at that level turn on when amps start to taper in each case, not on the amount of initial charging amps. LFPs supposedly taper later giving them more time at the higher amps.
Still no info on when amps start to taper with LFPs if you use a reduced charging voltage from the 14.6 max. Looks like charging/generator run time comparisons will need to specify what voltage was used as well as what initial amps were, but still no good info on that.
Of course to take advantage of the LFP high acceptance rate in amps for "fast charging" claims by "Sales" you need a charger that can do that many amps, plus a 120v source that has enough watts (VA) to run the charger without dropping too far in 120 voltage, or a generator that has enough watts/VA to run that big (in amps) of a charger.
It is all good fun if you don't weaken! :)
