XPAL Power — maker of the PowerSkin, the shock-absorbing, battery-boosting cases for smartphones and gaming accessories — has revamped the design of its battery cases, rolling out the first models  to be available in color.

These new models for Apple iPhone 4/4S are available in glossy black and limited-edition titanium. The PowerSkin for iPhone 4/4S features: an on/off button located on the side; a 1500 mAh rechargeable battery that extends talk time up to five hours (up to 200 hours standby); and a cable that allows users to sync data while re-charging.

The one-piece, soft-touch case slides on the iPhone and protects against shocks, drops and dust. The PowerSkin for iPhone 4/4S costs US$69.99. It’s available at www.power-skin.com/battery-cases/apple with a 20% discount until Aug. 22 using the promo code MYNEWPSK.