Duracell PowerSource Mini Portable Battery Charger

The compact PowerSource Mini gives a power boost to just about anything, including your USB-compatible devices.

This lithium-ion battery pack is light enough to take backpacking and powerful enough to charge several handheld devices on short trips. Juice it up from a wall plug, your computer, or with the included USB cord and car charger. On the trail, use the built-in mini USB plug to charge compatible devices. On a three-day trip to the Adirondacks, our tester recharged her camera battery, gave her headlamp a boost, and still had enough power to charge her dead phone. $60; 3 oz.; duracellpower.com. Reader service #121

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