... and with prevent scratch function. Product Specification:Battery Cell Type:18650 Lithium-ion battery cell Capacity:3000mahInput:mini USB 5V/500MA(Max)Output:5V ... power have complete when you press button again within 20 second. Charge digital device like cell phone,ipad,mp3,mp4,iphone, ... ipad, mobile phone, mp3, mp42. LED light on when press button, this mean battery charger have start to work.3. When ...