Portable power has become rather portable these days and the RAVPower Deluxe 15000mAh Portable Charger hopes to fill your emergency power needs.
The portable charger (model RP-PB19) has duel charging capabilities, an LED light to help you find your way in the dark and enough juice to recharge your Windows Phone several times over. The compact size helps make the RAVPower portable, even pocket able (jacket or back pocket that is).
If you are in the market for a portable charger that won't weigh your backpack or briefcase down, the RAVPower Deluxe isn't a bad option to consider.
The charger can re-charge two devices at once and with 15000mAh of juice and should be able to replenish your devices several times over. Charging the 15000mAh charger can be done through a USB port on your computer or through a USB wall mount plug.