With a huge 5,000mAh capacity, the powerful portable Anker 321 MagGo Battery is snap and go magnetic power bank charger that is still slim and lightweight—ideal for charging on the go. Features a colorful design for a touch of personality to your phone, while the superior magnetic attachment ensures a secure connection to your iPhone. Compatible with MagSafe cases, allowing you to charge your iPhone without removing the case. $29.99. Buy here. (Save an extra 25% with check box!)