... for mobile phone charger Portable battery charger for iPad with capacity 3300 mAh 1,Capacity:2000mah~12000mAh/3.7V(lithium polymer battery)2 ... Function,widely used for electronic applications.2. Long battery lifespan, more than 500-800 times recharge cycles ... 4.Auto power off, make better use of battery energy.5. unique high-technology, provide overcharge ... Packing 1pc power bank for mobile phone charger