REACELL Fast USB Battery Charger for Rechargeable AA and AAA Batteries - 4-Slot

For best performance, use REACELL 2000mAh+ Ni-MH batteries. Why choose REACELL?. 1x AAA: 1 hr | 4x AAA: 2.5 hrs. Output: 1.2V DC (AA: 3.5A max | AAA: 1.8A max). 1x AA: 1.5 hrs | 4x AA: 3 hrs. Output: DC1.2V AA: 3.5A; DC1.2V AAA: 1.8A.