Accessory manufacturer Prong is back with another unique case choice for the iPhone 5s/5.

The company rose to Kickstarter fame with its PocketPlug case that features an integrated charging plug. And the new PWR case adds a backup battery into the mix.

Easily detachable, the 1,500 mAH battery can be recharged using an outlet while the iPhone remains safely with the user. Once the battery is fully charged, it can be reattached to the case to charge the handset as well.

Here’s a quick promo video about the case. Click here if you can’t see it.

As for the charging plug itself, it’s retractable and folds back into the battery when not in use. If you’re not near a plug, the battery or handset itself can be charged with the included micro USB plug.

The case can be preordered now directly from Prong’s site for a special price of $65. It will retail for $79.99 when it becomes available sometime this summer, including at Best Buy.

Buyers can select from one of four different color combinations – black, white, blue/gray, and white/pink.

For other recent accessory news, see: Logitech Introduces A New Ultrathin Keyboard Cover For The iPad Air And iPad mini, Withings Unveils Its Second-Generation Activity Tracker, The Pulse O2, and This Week In Accessories: Pad & Quill’s Traveler Case For The iPhone And More.