Mugen Power Extended 3000mAh Battery Case for Nokia Lumia 1020. Over 2X More Power!

Excellent quality but way too bulky. I wish they would've made a slim profile version. And it wouldn't even need quite as long of battery life to go with it to be sufficient.

This product works as advertised, the battery can actually last more than 1.5 days of heavy use with bluetooth, games, movies and streaming, my only complain is about the build, this is HUGE and makes the phone very heavy to hold

So far so good it definitely extended how long my phone lasted buti only gave it 4 stars simply because I have not had it long enough to give a full testso time will tell