Whether your phone actually tends to run out of juice on heavy-use days, or you just have mild panic attacks whenever it gets below 50%, an external USB charger can do wonders for your peace of mind.
Every time I travel, I find myself staring longingly at unavailable power outlets—if only I could just slip in my USB-powered gadget for just a few moments! Thanks to the clever FlipIt! charger though, such woes are over.
MintyBoost was a terrifically handy DIY USB charger, housed in an Altoids gum tin. It worked great, until Apple changed the way it charged devices, gimping third-party chargers. But have no fear! The MintyBoost team is on the case.
If you were comforted by the first revieLITE, an iPod charger/nightlight combo from 2008, you'll be even more thankful for the sequel: the ReviveLite II has a slimmer footprint, an additional USB port and still protects you from night terrors.
Like a deluxe version of the DIY MintyBoost AA charger, here's a DIY that explains how to assemble a USB charger that is not only rechargeable—with a Lithium Polymer battery—but also solar powered.
Most USB car chargers look like a perfect nightmare of bad design and nerdery. Belkin has acknowledged this and offered up the respectable Micro Auto Charger (also realizing 4-port USB car chargers are overkill).