Polaroid 2200Mah Power Pack 2200 mAh Lithium-ion Battery Compatible With All Smartphones. USB Charge Input 5V 500mA, USB Charge Output 5V 800mA Charge Your Device & Power Pack From Any USB Port, Comes With Sync & Charge Cable Intelligent Power Management To Maintain Efficiency, Long-Lasting Battery Life, Portable Size Designed In The USA, Free Customer Support, Satisfaction Guaranteed or Full Refund