The XP2000K Portable charging kit. Providing portable power for when you need it - at home, in the car or on-the-go. At home with wall adapter. Driving to your event with a car adapter. Or just when there is no power available with our XP2000 portable charger. SPECIFICATIONS: Battery Cell: Lithium Polymer Power Capacity: 2000 mAh Rated Input: 5V, 0.5A Rated Output: 5V, 0.5A Charge Time: 4 Hrs Weight: 0.16 lbs / 0.07 kg