The XPAL PowerSkin Galaxy S III Battery Case doubles your battery life and protects your phone at the same time. The XPAL PowerSkin Galaxy S III Battery Case has a built-in rechargeable secondary 1500mAh battery that attaches to your GSIII, instantly doubling the battery size on your phone with very little added heft or size. The silicone construction of the case is soft to the touch, but improves your grip on the phone and protects it from bumps and scrapes. This case includes LED battery status lights and includes its own charging cable. 

The XPAL PowerSkin One X+ Battery Case serves two simultaneous functions: it protects your HTC One X+ from bumps and scrapes while adding a second 1500mAh rechargeable battery to double your phone's talk time. Made of soft-but-durable silicone, the XPAL PowerSkin One X+ Battery Case includes LED battery status lights and an included charging cable to make sure your phone never runs out of battery when you most need it. Best yet, the silicone is 100% recycled! Never leave home without it.