You can’t call an Uber, order takeout, or meet your friends if your phone or device dies. This pocket-sized power brick takes you from zero to full battery four times faster than standard charges, whether it’s your phone, drone, or GPS that you’re charging. And it can power two devices at once. The GoPuck 6XR ($82 at Jet) replenishes an iPhone 6S five times, a GoPro HERO4 seven times, and almost any other USB-powered device, including tablets and laptops, more than once. It’s shock and vibration resistant too, so it’s ready for any adventure.