Gazza, please stop with the 10v nonsense. Take a look at the screenshot below. I just took it from EvWorks’ website on their 160ah Winston cells. Most LifePo4 chemistries are pretty much identical to this.
@3v (12v in a 4 cell configuration) in most applications you are way over the 80% discharge level. Take the 3rd curve from the left as a good example. @25c the battery is at over 90% discharge level when it hits 3v (12v). The voltage drops off a cliff after that. If you’re drawing down your lithiums to 10v each time you may as well be burning money. IMO a 12v cut off is the prudent way to go.
901611EC-5E7E-4B02-8948-DB0DA17097C7.jpg901611EC-5E7E-4B02-8948-DB0DA17097C7.jpg