Jon Jenkins said: > The situation with NiMH is quite complex > but the theory goes some thing like this: > > start: > charge pulse for 100-500ms at 2-4x Ah rating > monitor dv/dt for inflection > reverse charge for 10ms at 0.1 rate > monitor dT/dt for rise > monitor total charge x time > goto start fyi, Panasonic has some good info on their batteries here http://www.panasonic.com/industrial/battery/oem/chem /nicmet/index.html Also, panasonic says NEVER reverse charge a NiMH battery. What do you mean by PULSE charge ? Thanks, Kevin -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads