On Mon, Jan 24, 2011 at 7:56 AM, RussellMc wrote: >> NIMH cells vary widely in their acceptance of long term overcharge (tric= kle). >> Some specify that you shall never charge them this way. Others will >> accept a C/10 overcharge without damage. =A0The difference is in the >> exact construction of the cell, determining how well it handles the >> resulting free oxygen and hydrogen. > > MOST reputable manufacturers of high capacity NimH cells would advise > that 150 mA overcharging for more than a 'short while" WOULD cause > some damage. Damage is probably measured in loss of cycle life and > probably also some diminution of capacity. > > For magnitude of 'some' see any of Olin's answers ;-) > I doubt you would get good answers from the datasheet. Typically this kind of information is kept inside the company and only produced upon request from technical support side. --=20 Xiaofan --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .