- Sep 21, 2019
So does that suggest that it is better to minimize maximum charging than to minimize maximum discharging?
For various reasons, I’ve switched from a top-balanced LiFePO4 battery to a bottom-balanced battery (full discharge nightly, variable never-to-full charge depending on daylight / solar production).
I’ve chosen this because it’s a much better fit for my use case (time shift) but now I’m wondering whether it’s better for a LiFePO4 battery (or any lithium battery, for that matter) to be drained to ~10% daily and never charged close to full than to be charged to ~85% or 90% daily and never discharged close to empty…
I've seen posts indicating that the temperature increases in the cells significantly at the bottom end of the SOC compared to the top.
I have never verified this myself, but it might be worth your time to do some testing .... increased temps in the cells in another thing that can shorten the cycle life.