On 13 Mar 2021 at 19:17, Alan Arrison via EV wrote: > If you regularly run your cells to 2.5 volts, you'll be replacing them soon. > > 3.00 volts with no load is considered dead. 2.5 volts is deader than dead.
Thanks Alan. Is that true for LiFePO4? In the original post, John gave the nominal cell voltage as 3.2v, so they just about have to be LiFePO4. Again, I'm not a lithium expert, but with the few hobbyist LiFePO4 batteries I have, I usually stop the discharge at between 2.6 and 2.7 volts per cell. For a 4-cell 12v battery that's 10.4v to 10.8v, conveniently close to the usual 10.5v "stop here" value for lead batteries. >From what I've seen, there seems to be a negligible amount of additional usable AH capacity between 2.7 and 2.5 volts per cell. So I don't see much point in going below around 2.6vpc. John, what brand and type are your cells? Also, what charger are you using? David Roden, EVDL moderator & general lackey To reach me, don't reply to this message; I won't get it. Use my offlist address here : http://evdl.org/help/index.html#supt = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Estimated yearly US cost to safeguard Persian Gulf oil supply: $50 billion Estimated 2001 value of US crude oil imports from Persian Gulf: $19 billion -- Harper's Index, April 2002 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
