Is there an iPhone 5 battery case that also protects it very well?

I was looking into getting a battery case for my iPhone 5, but some reviews said that after a few drops it shattered the case and their phone. I currently have an otterbox commuter case which does a great job protecting my phone as I drop it often. So does anyone have any recommendations/know of a good protective battery case for iPhone 5?

Try this one: http://www.tvc-mall.com/details/iPhone-5-Power-Pack-Battery-Charger-Case-with-Front-Protective-Cover-2600mAh-Black-I5-793A/
It has 2600mAh capacity, and comes with a flip cover to protect the touch screen. It already protects better than most of the normal covers.