Amazon.com: POWEROWL High Capacity Rechargeable AA and AAA Batteries with Battery Charger (USB Fast Charging, Independent Slot), NiMh 4 PCS AA 2800mAh & 4 PCS AAA 1000mAh : Electronics
UltraLast Nickel Cadmium 2/3 AAA Solar Powered Lighting Rechargeable Battery - 4 Pack - ULN423AAASL at Batteries Plus
iMah 4-Pack 1.2V 750mAh Ni-MH AAA Rechargeable Battery for Panasonic Cordless Phones Also Compatible with BK40AAABU HHR-55AAABU HHR-65AAABU HHR-75AAA/B HHR-4DPA/4B BK30AAABU BT205662 and Solar Lights
Weight Of Batteries – The Complete Guide – Measuring Stuff