We have a deal for you today on the ThinCharge iPhone 6/6S Battery Case, a thin battery case with a 2,600mAh capacity. You control the charging with a button, and there's an LED indicator for when it's doing it's thing. It has pass-through charging that charges your phone first, and then the case, when it's plugged in. You can get it through our deal for $56.99.
Check It Out: ThinCharge iPhone 6/6S Battery Case: $56.99
