Reviews forAnker Astro 5600mAh Portable External Battery for iPhone, iPad, Android, Black
High Capacity, 5600mAh; 2-3 full charges or add 22 hours talk time to your iPhone 4S / 4G / 3GS; 1-2 charges for Samsung Galaxy S4 / S3, 200 hours + audio playback, or 200%-300% to the battery life of most mobile phones.
Compact, portable & stylish design; Easily fits into your bag to provide instant power; PERFECT for long plane flights, road trips, or whenever you need to charge your mobile devices wherever you are.
Samsung Grade A cells and high quality Lithium-ion battery ensures reliability; 500 + recharge cycles over the life of the battery.
Reviews forAnker 2nd Gen Astro 6000mAh External Battery for iPhone, iPad, Android
The smart charging port, powered by PowerIQ™ technology, intelligently identifies each connected device and speaks its language - guaranteeing the fastest charge time for EVERY device (up to 2 Amps).
6000 mAh of capacity and an energy efficiency rate 10% above previous generation Astros and many current standard alternatives charges the iPhone three times and large-capacity phones like the Galaxy S4 almost twice.
A "shake" starts a charge or displays the remaining power level. The ultra-low power consumption (100000 shakes consume less than 1%) 10-LED power meter balances accuracy and aesthetics.