> Am I correct that the mAh rating is a measure of capacity--how long it > can yield power?
Yes. > The Pentax is 1620 mAh. If we get a generic rated 1650 or 1700, > presumably that will be okay? Yes, but don't get too carried away with the "generic" rating. A generic batt could be labeled 2000mAh yet being outperformed by brand name batt. But the worse part is generic batt often had shorter life span generally. Regards, Alan Chan http://www.pbase.com/wlachan -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net