One of them actually, is found in a recent patent filing to the USPTO yesterday, as it clearly outlines a cell phone charging enabled holster. As you can pretty much gather from the accompanying image, the BlackBerry of choice sits snuggly into the case, where it’ll be charged while on the go – and of course, you’ll need to plug in the holster in order to charge its very own internal battery.
PowerSkin and Mophie. Still, we’d imagine that the charging mechanism would be an automatic process, similar to how some BlackBerry smartphones automatically turn off their displays when placed in a particular holster. Considering that RIM’s smartphones are known to be easy with sipping battery power, this self-charging holster will undoubtedly extend usage time tremendously.
source: USPTO via CrackBerry