Concur, but trickle charging is even much less that 1/20th C. Its really there to offset the self discharge rate. I have had meltdowns with NiMH even to 1/10. Duracell recommends 1/300 C indefinitely. If you charge at the traditional rates of 1/20 to 1/30 C it will shorten the life of the cell or potentially cause them to boil over, albeit less violently than 1/10. The best way is charge termination at ~ 1.25 then restart at 1.0V per cell or slightly earlier, and program this large into your charge algorithm. http://en.wikipedia.org/wiki/Nickel-metal_hydride_battery#Trickle_charging At 02:54 PM 8/22/2011, shalimr9@gmail.com wrote: >0.1C is not trickle charge, it is the normal charge rate for 14 >hours recharge time. >Most NiCad and NiMH batteries will not like that too much as a >trickle charge rate and will get and stay warm, at least those that >I have had experience with. The batteries in the HP 8116 function >generator were trickle charged at that rate and cause extensive >damage when they get tired of it. I have had better luck > > >Trickle charge would be 1/10th or 1/20th of that. > >Didier KO4BB Best Wishes, Marv Gozum Philadelphia