The Ultralast Universal Battery Charger With USB Port (ULUBC1) Charges up most rechargeable batteries including AA, AAA, 9 Volt, and Button Top (Li-Ion). It also Charges most Video, Digital Camera, MP3, Cell Phone, PDA and other 3.6V-7.4V Li-Ion Batteries. Charges up to AA / AAA / 9 Volt / Button Top (Li-Ion) rechargeable batteries.