Energizer sells 2100 mAh AA NiMH rechargeable batteries. You can buy a four-pack of them at Wal-Mart for less than $10. WARNING: Be sure to verify, by looking at the battery body itself, that you’re buying 2100 mAh batteries. Energizer sells one-hour chargers packaged with 4 NiMH AA cells, but these identical looking cells are only 1800 mAh. 73, Bill... AIØC