uNu DX iPhone 5/5s 2300mAh MFi protective battery case (multiple colors) $40 shipped (Reg. $80)

Amazon has the uNu Power DX external protective battery case for iPhone 5/5s in black, red or white for $39.99 shipped. That’s around $40 or 50% under the original listing, $39 under the going rate direct from uNu and matching the best prices we’ve ever seen outside of a one day sale when it was $4 less. This is the lowest price Amazon has ever offered this highly rated case.

The MFi DX cases come with a 2300mAh built-in battery for an “additional 10 hours of talk time” and features a 1A powerful output, integrated charging switch, battery level LED indicators and a bonus screen protector. Wirecutter ranks this battery case as its second best option. The $48 Lenmar Meridian battery case took top honors.

It has received a 3.8/5 star rating from nearly 1,000 Amazon customers. With your savings, uNu has a number of additional battery packs for even more juice on the go. Looking for iPhone 6 accessories? Here are a couple roundups for the best case and dock options for Apple’s latest.

More from uNu:

Our (2300mAh) battery brings you power like never before. With the ability to charge the iPhone 5 an additional 100%, the DX-5 gives you an additional 10 hours of talk time or 8 hours of additional web-browsing. The DX-5 has got your power concerns covered.

We dropped the phone on this one…thousands of times, to ensure that every conceivable effort has been made to make the DX-5 a complete 360° of protective armor. With an additional lip that surrounds the screen, extra-strength corner protection, and a provided screen protector, the DX-5 is ready for almost anything.

Our (2300mAh) battery brings you power like never before. With the ability to charge the iPhone 5 an additional 100%, the DX-5 gives you an additional 10 hours of talk time or 8 hours of additional web-browsing. The DX-5 has got your power concerns covered.

Combining geometrical shapes and the anatomy of the human body, our designers created the perfect blend of beauty and function. With an ergonomic hand-feel, subtle color tones, and easy-to-use functionality, the DX-5 has the style to impress just about anyone.