Mophie has just introduced a new device that will charge your smartphone and other microUSB-powered gadgets without adding a lot of bulk to your person. The Mophie Juice Pack Reserve Micro is small enough to fit on a keychain, and packs a 1000mAh battery. You can order one now for $39.95.
There are a few things to note about the Mophie Juice Pack Reserve Micro. For one, it’s not recommended for tablet charging. You also can’t charge the Reserve Micro while charging a connected device at the same time. One the plus side, it does come with its own integrated microUSB and full-sized USB connector. It also has a key ring that can be easily attached to your keys.