>> I think I have seen some reputable firms offering 3300mAH 'AA' >> cells. Sanyo and Sony have very good cells. Really? Got a manufacturer web site and spec sheet? Another forum recently expressed the opinion that anything labeled more than 2700mAH was being very optimistic and perhaps was a counterfeit. (One of the things that happens with higher quality manufacturers is that the actual energy delivery matches the spec sheets more closely...) BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist