What I fail to see is why LIFePO4
cells, aka "LFP" or "LIP" cells, often have data sheets
saying they may be operated at over 4 volts, operated at 3.6 volts for "normal" and "full" power, and yet...3.6 x 4 =14.4 volts as a nominal battery
voltage, while people are using them and charging
them and referring to them as 12.8 volt batteries?
If the cells are almost fully charged at 3.6v and substantially discharged at 3.5v, what is the purpose of using them at 3.2v (12.8 for 4 cells) and running them down closer to 3v each?