T-3000 Tenergy USB Emergency In/Out Charger for Mobile Phones, MP3, Portable Games Devices Ultra compact and light. Easy to use! Recharge 2 pieces of AA/AAA Ni-MH rechargeable batteries via laptop/PC or any power supplies with an USB outlet. # As an emergency charger - power up your digital devices by 2 AA/AAA Ni-MH rechargeable batteries or 2 AA/AAA Alkaline batteries. Includes charging tips for Nokia, Sony Ericsson, Samsung, LG and Motorola. Dual color indicator.