MiLi has added to its iPhone accessory line-up with the release of what it bills as the "world's thinnest external battery and protective case for iPhone 3G and 3GS." The slender MiLi Power Skin has a 1,200 mAH battery capacity which can provide up to double the battery life of the iPhone, a pass-through USB/mini-USB for syncing and charging without removing the case and is designed to be easily removed for docking.

In the thickness stakes, the Power Skin comes in at 0.7-inches (17.9 mm), a shade thinner than the Mophie juice pack which measures 0.75-inches (19 mm).

It's available in eight two-toned colors (combinations of black, white, blue, green, orange, and silver), is Apple certified with a one-year manufacturer's warranty and costs US$69.95.

MiLi has also announced a diminutive mobile phone USB charger called PocketPal which features a folding, 100-240vAC plug. PocketPal costs US$19.95.