LifePO4 Cycle & Voltage Recommendations

30 Dec.,2024

 

LifePO4 Cycle & Voltage Recommendations

I have 2 JavaEnergy LifePo4 200AH Plus batteries. I use a Midnight solar 150. 
Factory Data: 
Charge @ 14.6, 29.2
Low Cutoff - 10 to10.8, 20 to 21.6 
For more cycles they say 80% DoD.

I float at 27.2 - not sure it can be turned off... I charge at 28.8.  I re-bulk at 25.6. 

Among other things, what I am questioning are the recommended cycles. According to MS, they said the system should be discharged to 20% before charging for efficiency. This is confusing. My system is an emergency system only-- although I will run a freezer on it. Or, I could just keep it charged and never use it unless an emergency occurs. They said mini-cycles will shorten the life of the batteries. If I happen to run this to 20% overnight,... assuming I could... then its not an emergency system. A cloudy day or two and its done without a generator. 80% of 29.2 is 26.6, 20% is 25.6. Thats a tiny spread.  Does this mean I must do this daily? or should it just run as it is, whatever I hook to it...and simply charge as needed? If I need to operate at 26.6 to 25.6 ... should float be set to 25.6? What about re-bulk to start full charge again? 

Appreciate the help. 




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