As Adam said... A 1500mAh battery of a particular type might provide power for small percentage less time than a 1750mAh battery, but with respect to form factor and voltage they will be identical.
Sometimes the mAh ratings aren't particularly accurate. For instance, I have a Sony and a CTA battery for the R1, the Sony is rated 1100mAh and the CTA is rated 1450mAh. But the Sony lasts just as long as the CTA, so either the Sony rating is pessimistic or the CTA is optimistic. For the A2, I have both KM and Impact batteries and the ratings at least work as expected: the KM is 1500mah and the Impact is 1800mAh (I think), the Impact definitely lasts longer on a charge in the A2. Godfrey On Nov 11, 2006, at 9:11 AM, Adam Maas wrote: > mAh is a measure of capacity, the more you have, the longer the > battery > will last in a given application. > > 2500mAh is likely not possible in that form factor, to make a 7.4v > 2500mAh battery would require a physically larger battery. > >> Does it matter much if one uses a 1500, 1700, or 1750 mah >> battery? What do >> those numbers actually mean? Could one use a 2500 mah battery >> (assuming >> one was available)? >> >> What I'm getting at, if I'm not clear, is that I heard that >> batteries for >> the Pentax need to be within some certain range of volts or amps - >> some >> power range, I guess - in order to properly work in the camera. >> Are the >> figures you gave capacity, which, I suppose, means how long the >> battery >> might last, as opposed to the actual power of the batteries. >> >> I, for one, could certainly benefit from a better understanding of >> batteries. Perhaps others could as well. >> >>> <http://forums.dpreview.com/forums/read.asp? >>> forum=1036&message=20723942> >>> or >>> http://tinyurl.com/y4k8gv -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
