Home > Cellphone, Design, Innovation, Technology > Third Rail: The Clever iPhone Case

Third Rail: The Clever iPhone Case

“This friendly breed of Third Rail combines a skin-tight phone case and a surprisingly light battery pack you attach to your phone when you need a recharge.

We’ve seen charging cases before, but most have problems. Powered phone cases usually add too much extra heft and bulk to a cell phone. If you need extra battery life, you have to turn your svelte, five-ounce iPhone 4 into a pocket-stretching doorstop that adds a half inch to the phone’s length and almost doubles the weight.

Third Rail’s system is comprised of two parts — a bantamweight (0.8 ounce) black case that’s slim and comfortable, and a backup battery that snaps onto the case, but only when the phone needs extra juice.

As a bonus, the battery can do more than power up a flagging iPhone. With its pair of mini-USB charging ports (and included cables) it can charge multiple devices simultaneously. The Third Rail battery can also be piggybacked, so you can stack additional batteries on top of the primary battery for more power.”

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