Energizer 638590 Rechargeable AA 1300mAh Batteries New improved, now pre-charged They can be recharged to full power at any time using a broad range of chargers including our family charger, compact charger and ultra fast charger. Since the cells are rechargeable up to 1000 times, they re a good economic and environmental choice. It makes them ideal in high drain devices such as portable CD players, MP3 players, remote controlled toys, hand-held games, palmtop computers or any time you want to replace your standard batteries in your household s battery operated devices when you use them a lot. Replacement for: 15A, 15AC, 4006, 815, AA, AM3, E91, KAA, LR6, MIGNON, MN1500, ND62S, STILO