Many of us on the TUAW staff are big fans of the Mophie juice pack battery packs for iPhone, and now the company has come out with one that packs a lot of capacity into a case that's only 1 millimeter thicker than the skinny juice pack air.
The juice pack plus for iPhone 4 ($99.95) comes with a whopping 2,000 mAh capacity, which can provide up to 8 hours additional talk time or 7 more hours of internet use on a 3G network, or up to 11 hours more internet use on a Wi-Fi network. That's 500 mAh more than the juice pack air ($79.95) in virtually the same volume.
Mophie added some other features to the juice pack plus as well. It's designed as a virtual speaker box that redirects sound from the bottom of the iPhone 4 -- where the speakers are -- to the front. That's useful in providing richer sound and helpful during those long conference calls with the iPhone 4 in speakerphone mode.
Mophie seems to be going to the printing world for their choice of colors for the juice pack plus, as it will be CMYK (Cyan, Magenta, Yellow, and Key (black)). The black case is available now; the colors should be available in January according to a Mophie spokesman. We'll have a full review and giveaway in the near future.