Specification Replacement battery for ipad if its built-in battery doesnot work 1.1 about 1.5 times extended working hours as ipad original battery. 1.2 compact enclosure to maximize the protection of your ipad and reflect your personality. 1.3 built-in safety&high-capacity lithium-polymer rechargeable battery. 1.4 using ipad adapter or computer standard usb interface to charge the ipad. 1.5 four LED indicates the power status : 25% 50% 75% 100%. 1.6 PC interface connect to ipad&mobile and other portable machine. 2. Application: Mainly for ipad, you can aslo use for mobile and other portable electronic products. 3. Parameter 3.1 dimension :246mm*193mm*22mm 3.2 support ipad model: 16gb/32gb/64gb 3.3 extend video display time: 14h 3.4 extend audio display time: 80h 3.5 extend standby time :800h 3.6 input voltage: 5.1V/2.1A 3.7 charge current :1.5A(ipad adapter)/0.5A(standard computer) 3.8 max output voltage:4.75-10V 3.9 max output current:2A 3.10 battery capacity:10000mAh(Optional ,6000mah-15000mah) 3.11 battery working temperature :-20-45℃ 3.12 color: black&white Note: with leather or without is optional , as the follow pictures;