EV 7

Author	Message
isochronic Guru Joined: 21/01/2012 Location: Australia Posts: 689	Posted: 11:36pm 19 Aug 2013       I suspect a lot of batteries are damaged by the charging method taking the electrode voltage too high. Some chargers are nothing more than a transformer and diode, after the cell has charged the charging voltage goes way over spec. If the recharge causes 1% damage to the active material each recharge, it is almost undetectable but obviously the damage accumulates. I kept an old lithium mobile between 10 and 80% charged, instead of a 100 % charge, and it was still going strong after 6 or 7 years. (Caveat : lead acid types would sulphate up / reform by zapping etc)