This case takes ALL day to charge and will not fully charge the iPhone. This case you can't charge the phone and case at the same time either. I thought I was getting a deal with this case and in result I have to now purchase a different case. I am very disappointed in the quality of this case.
For the price, it's not bad. The only problem I had with this case was after about 3 months, the plug to charge would no longer work when the phone was in the case. I could charge the case on its own, but not with the phone. So now I have to charge them separately. The phone doesn't easily fit into the case without a few tries. Otherwise, I can't complain since the case still charges my phone to 100% when needed.
I like the case because it performs it's purpose. However I get kind of irritated with it. For instance, sometimes when I connect a charger to the case, while the phone is in it's case, the battery case will charge, but the phone itself won't charge unless I hit the charge on/off button. Other than that, it does preserve you're battery life, and is a nice looking case. Wish they had prettier designs to choose from however.