> "Aren't dead Pb batteries dead forever ?" > > Lead-Acid batteries or gel-cells? > Lead-Acids, when dead, don't conduct and then something > in excess of the 'normal' is required to begin the process > of getting something back into 'the water' ... I've seen > this more than just a few times in my life, and, no, it's > not good for the battery ... http://www.uuhome.de/william.darden/carfaq.htm Take a look at Section 16 - "How can I revive a sulphated battery ?". I'd say it would be impossible to do this with a gel cell btw, when in town the other day I picked up gel cells at an alarm supplier (Intek in Normanby Rd for anyone in Auckland - used to be Alexander Batteries then Newsec) for 1/4 the price of the local retailer (DSE). If I had a $64 battery I'd probably try to revive it somehow. A $16 battery ? Nah, bin it (properly of course) -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads