Battery1inc ANTPO 3000mAh Ultra-thin Card Designed Portable External Battery Backup Pack, Mobile Phone Power Pack, High Capacity Portable Charger for Apple iPhone 5, iPad mini 2/1, iPad 5/4 (Lightning Cable not Provided), iPhone 4, iPad 3/2/1; Samsung Galaxy S4, S3, Galaxy Ace, Galaxy Note 3/2; HTC One, Sensation, Desire C S X, Wildfire S; Google Nexus 7, Nexus 10; Nokia Lumia 920 800 900 N8; Motorola X; LG Optimus; Blackberry Z10; Sony Xperia Z (Green) Super thin design,fashional and colorful. 81% charging efficiency: Energy efficiency rate 10% above than other Brand batteries. With built-in safety circuit and heat-resistant design. High quality polymer batteries, with overcharge, over voltage, automatic power off and others multiple protection. Mini 3000mAh; Delivers a full charge or 9 hours of additional talk time to your iPhone 5 / 4 / 4S / 3G / 3GS. On most other phones, benefit from 1 full charge or 90+ hours of audio playback.