Anker 3350 mAh Portable Battery

Largest capacity battery to small portable form factor.

• PowerIQ Technology: Detects your device to deliver its fastest possible charge speed up to 1 amp.
• High Capacity: Add one and a half charges to your iPhone 5s or half a charge to your iPad mini.
• Ultra Compact: Lipstick-shaped aluminum design (3.7 × 0.9 × 0.9in, 3oz) slips easily into your pocket. Recharges in 3-4 hours with a 0.8 amp adapter (not included) and the included Micro USB cable.

Note: As battery technology continues to rapidly change, you might get an different but improved make/model.