I'm sure you will receive a bunch of info on this, but I just want to caution you about trying this on lithium ion batteries. They should have a protective circuit built into the battery pack to prevent a catastrophic result if the battery isn't treated right. For some reason I think these circuits fail rendering the battery pack useless. Now, sit back, relax, and wait for everyone else to tell you what really is going on :) Josh -- A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams Jim Tellier wrote: > Lithium-Ion batterys that don't want to take a charge anymore. (FWIW, > they're Sony NP-FS11, 3.6V, 4.1Wh for use in one of their digital cameras). > I was wondering if some sort of high-voltage, narrow-pulse, low-frequency > "zapping" methodology might (even temporarily) "repair" these things? I > recall hearing about something like that, but can't find the link (and I > don't know if it was Li-Ion or other). -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads