Is it really possible to build an iPod recharger with a couple of standard AA batteries and an Altoids gum tin? This post gives step-by-step instructions to assemble what it says is a "very powerful USB charger for your MP3 player, camera, cell phone, and any other gadget you can plug into a USB port to charge." And if you have more spare tins lying around, you can try your hand at some other homemade gadgets.
Is your phone battery always at 4 percent?
These battery packs will give your device the extra juice to power through all of those texts and phone calls.