Vorson Bookmark Backup Battery

Backup batteries needn’t be large, strangely shaped, and clunkier than the devices you’ll need to charge, as most are. Take Vorson’s Bookmark, the world’s thinnest mobile backup battery. Measuring in at a paltry 4.7mm, the Bookmark is actually thinner than all your portable devices, including your brand new smartphone and air-y tablet. We forgive Vorson for slightly thickening its far end to make room for a USB plug and touch-activated charge indicator since the device still remains staggeringly slim overall, especially considering its 2500mAh capacity that’s enough to fully charge just about any phone from flat to full.

Hit up Amazon for details – $30