Im switching my 13yr old system over to LiFePO4 batterys. 2 Jita 12V 300ah in series to be exact. My charge controller is a Xantrex 150/60 MPPT and it has a setting for what voltage it will restart Bulk charge. My question is what should that voltage be? This is an off grid cabin which always has some amount of power draw but not much unless im there.
And here's the other settings I've researched and thinking about, please comment as Im new to LiFePO4:
Bulk = 29.2V (2x 14.6V)
Absorb = 28.8V (2x 14.4V). Instead of 29.2V because the min absorb time is 120min. I think 60min would be best.
Absorb time = 120min. This is the minimum the Xantrex CC can take
Float = Off
Equalize = Never
Restart Bulk charge = 26.4V (2x 13.2V) ??? This reasonable ???
Temp compensation = Off
Side question about float, is Off really the best? Why wouldn't I want to use the Solar wile sun is up to keep say above 90% SOC, ~26.6V
And here's the other settings I've researched and thinking about, please comment as Im new to LiFePO4:
Bulk = 29.2V (2x 14.6V)
Absorb = 28.8V (2x 14.4V). Instead of 29.2V because the min absorb time is 120min. I think 60min would be best.
Absorb time = 120min. This is the minimum the Xantrex CC can take
Float = Off
Equalize = Never
Restart Bulk charge = 26.4V (2x 13.2V) ??? This reasonable ???
Temp compensation = Off
Side question about float, is Off really the best? Why wouldn't I want to use the Solar wile sun is up to keep say above 90% SOC, ~26.6V
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