Even after the many announcements at this year's BlackBerry World Conference, Waterloo is keeping that patent train a-rollin'. In a filing granted today, we get a glimpse of what RIM could have up its sleeve, er, on its hip. The claims detail flexible batteries built into holsters that recharge your phone when you're on the go -- all the while communicating to your BB's CPU to bring you alerts through its own speakers -- thus avoiding muffled sounds from covered parts. That's all well and good, but here's the real question: will these things eventually play nice with fuel cell-powered Berries?

RIM patent proposes battery-charging cellphone holster originally appeared on Engadget on Tue, 15 May 2012 20:41:00 EDT. Please see our terms for use of feeds.