LifePo4 Charge Performance
Thinking seriously about replacing our two GC2's with a pair of 100ah LifePo4's. Hearing a lot of chatter about how lithiums accept a charge much quicker than lead cells. Very familiar with how ou...
Forum Discussion
PT, please explain how the "solar harvest" (Daily AH haul?) would change by swapping out FLAs for LFPs.
Eg, back in the day (2012) I had four 6s and a solar set-up that got the batts full every day restoring the 70AH we used every day.
Capacity was 458AH so 70 down from full each day is a "84-100".
In a special test drawing the batts down for that, I got 156 AH daily haul tracking, 90 AH haul with the solar not tracking but just pointing South and tilted up, and 70AH lying flat all day, at 49N in May.
So what would my "solar harvest" have been in each panel orientation if I had swapped out the four 6s for however many LFPs you want to use to make the comparison?
Please give your calculations, reasoning, and scenario assumptions showing how the daily AH haul would have been greater if only we had LFPs instead?
If PT can't, anybody else can give it a try--I am baffled by that -- so thanks for any help with understanding how that could be.
EDIT--I thought the advantage for LFPs with solar was just that so often you don't get back to full and that sulphates FLAs but LFPs don't care. With the low amps of solar, can't really get any advantage for so-called "faster charging"--but maybe I missed something.
Eg, back in the day (2012) I had four 6s and a solar set-up that got the batts full every day restoring the 70AH we used every day.
Capacity was 458AH so 70 down from full each day is a "84-100".
In a special test drawing the batts down for that, I got 156 AH daily haul tracking, 90 AH haul with the solar not tracking but just pointing South and tilted up, and 70AH lying flat all day, at 49N in May.
So what would my "solar harvest" have been in each panel orientation if I had swapped out the four 6s for however many LFPs you want to use to make the comparison?
Please give your calculations, reasoning, and scenario assumptions showing how the daily AH haul would have been greater if only we had LFPs instead?
If PT can't, anybody else can give it a try--I am baffled by that -- so thanks for any help with understanding how that could be.
EDIT--I thought the advantage for LFPs with solar was just that so often you don't get back to full and that sulphates FLAs but LFPs don't care. With the low amps of solar, can't really get any advantage for so-called "faster charging"--but maybe I missed something.
