Sun Flash 4 AA Nickel Metal Hydride (NiMH) 2700 mAH Rechargeable Batteries with 4-Hour AA & AAA Quick Charger, 100/240 volt. Charger Fits Size AA and AA NIMH Batteries Can charge two or four at a time Include 4 -AA 300 Mah Batteries Last up to 4x Longer than Akaline Charges up to 1000x