On Thu, Jan 29, 2009 at 4:15 AM, Forrest W. Christian wrote: > I'll admit it. > > Any circuit which charges batteries scares me. Perhaps I've put too > much stock in those warnings on batteries and chargers, or seen the > effect of an overcharged battery one too many times. So, if a product > design required charging batteries, I put it on the shelf for later, > hoping that sometime I would conquer my fear. > > Well, I guess that there is no better time than now to conquer my fears. > > I have an application where I need to end up with a ~15 cell (18V) AA > NiMH battery pack. And I need to charge it from a automotive power > source. And preferably relatively quickly, like a 1 hour charger or > similar. > > Oh, and I'd prefer to keep melting, flame, and explosions to a minimum. :-O > > I've looked at a lot of charger circuits and I'm still scared. What > I'd really like is for someone (or someones) on the list to tell me how > paranoid I am being (or not paranoid) and sort of give me some pointers > of what to watch for. > (Note I'm not suggesting LiIon... :) > > -forrest You're being pretty paranoid. -- solarwind -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist