PhoneSuit's Flex Pocket Charger is smaller than most options out there, but in this case, that's a good thing. This external battery pack plugs into your phone's micro USB port and rests there while it recharges. This makes it more mobile than the significantly larger 15,000mAh battery backs that you would typically leave stationary while your device charges, though that also means it will likely only recharge your handset once. Now it's available from Tanga for $29.99, a 50% discount from its usual price.
PhoneSuit's Flex Pocket Charger is roughly the size of a cigarette lighter, so it stows away very nicely in most pants pockets. It comes with a removable top that protects it when not in use, and four dots line the side of the pack that show how much of its charge remains. The charger is currently available for $59.99, including from Amazon, so Tanga's price is quite a bargain. To make the deal even sweeter, shipping is free. Grab one before they're sold out.