With the all the applications and functions the iPhone 4 is capable of running, battery life is often cited as a problem in which Incase believes to have found a solution for. The Snap Battery Case works as a protective case and is able to increase the device’s battery life by an impressive 40%. Engineered as iPhone 4’s slimmest battery case to date, it features an integrated 900 mAh battery and durable hardshell construction that allows syncing and charging without having to remove the case. In addition, the hidden LED power indicator displays the charge level and the control button allows for on/off switching. The Snap Battery Case is available today for $59.95 through the Incase webstore.