The iphone 4 charger case is one HECK of an amazing product… Especially for the price!
It fits the iPhone 4 nicely. Works as a case, protecting the back of iPhone . The weight is nice… doesn’t add a lot of weight at all… definitely nothing to be worried about. When my iPhone 4 is reaching 5% battery power, I clip on this case and it will charge it back to 100%, and I do believe it will still add more charge.