Product Specifications: 1. Color: White/black 2. Input voltage: DC 5V 3. Output voltage: DC 2.8 V X2 4. Output current: 800 MA X2 1.[CONVENIENT CONNECT POWER]: come with USB power cord and USB AC adapter , mutiple choice for you to Charge through :Wii console, computer,TV with USB port,or USB wall outlet plug. 2.[ECONOMY & ENVIRONMENTAL PROTECTION]: Save a lot of money and protect the environment by using the rechargeable battery,perfect alterbative of disposable AA batteries. 3.[HIGHER CAPACITY BATTERY]: Improved 200% capacity compare with those normal rechargeable battery, lasts 3~5 times longer than the standard AA batteries. and The rechargeable battery pack fits perfectly on the motion plus controllers,kids so happy playing games without dead power worry. 3.[ LED indicator] : Easy to read, red for charging or blue for fully charged 4.[EASY TO STORE]: extremely lightweight and fully portable, takes up about as much surface area as the average cell phone, easily stored away when it's not in use. Perfect for someone who doesn't like clutter or doesn't have much shelf space available.