Newegg offers the Mophie Juice Pack Helium 1500mAh iPhone 5/5s battery case in metallic black for $39.99, but coupon code EMCAPKX84 brings the final price down to $26.99 shipped. Today’s price is $53 off the original listing, $12 better than Amazon and the lowest that we’ve seen it go for.
The Juice Pack Helium provides your iPhone with up to 80% more battery life while maintaining a slim design. Mophie includes a microUSB cable which can be used to charge the case and iPhone simultaneously. The case is made from a durable polycarbonate to protect your iPhone from bumps and falls.
This battery case is rated 3.6/5 stars by nearly 1,000 Amazon customers.