A couple of days ago, we told you about a pen that holds a toolbox-worth of tools inside. This pen carries extra power for your mobile gadgets inside. The Smartphone Power Boost Pen is the backup battery for people who like to carry the absolute minimum of gear. To charge your device, just pop the cap off the pen and connect it to your phone with the included universal charging cable (Lightning, Apple 30-pin, and microUSB adapters). It may be small, but the pen holds 400 mAH of emergency power, which should be about a 33% charge for the iPhone 5. The Smartphone Power Boost Pen is $49.99 at Sharper Image. Sharper Image says you can still get this delivered in time for Christmas by selecting their $9.95 flat-rate air express shipping option; this offer ends Monday, December 22 at noon ET.
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