Rechargeable Standard Battery, 2500mAh, NiMH
From Amazon
Panasonic eneloop pro ready-to use Ni-MH battery, AA/Mignon, 2-pack, min. 2500 mAh, 500-charge cycle life, with very high power performance and low self-discharge, rechargeable battery
BatteryUpgrade
Panasonic Eneloop Lite / HR06 Ni-MH battery Rechargeable (2 pcs, 2500 mAh)
Conrad Electronic
eneloop eneloop pro HR06 AA battery (rechargeable) NiMH 2500 mAh 1.2 V 2 pc(s)