LiFePo4 battery users

[Ticklebelly]

Something to think about if deciding what your low voltage cutoff should be with LiFePo4. At the bottom of a discharge cycle, terminal voltage drops from well above 12 volts towards the high 11s very quickly. I incorporated that knowledge into my decision of how low to go by understanding that the difference between a low point of 11.8 is only a tiny percentage difference in depth of discharge to, say, 11.5. I could have decided on 12 volts as my low voltage point and not lost much usable capacity.

High end point. Still playing with that by charging to 14.1 then watching what the terminal voltage settles at after the battery is rested, that is, left sit not connected to anything. I have one 7 year old AGM that I charge with 14.4 volts. When I rest that battery, it settles out to 12.63 volts. The charge voltage is only relevant to the time it takes to charge the battery, not the level or amount the battery can store.