You’re looking at a 5-credit-card-thick external battery in a nice aluminum housing, one which packs a very respectable 1,200mAh. It’s called the LithiumCard Air, but it’s not the capacity that’s most impressive, it’s what they’re calling the HyperCharging feature. See, the battery cranks out an impressive 2Amps of power, which is a lot and is enough to charge your device up to 1% per minute. The cables are integrated and flip out, making it so that you don’t have to carry anything else but the card. There’s even a sticky pad included in case you want to glue it on to your device. And best of all, the LithiumCard AIR is all of $40, after today’s 33$ rebate. You have to pick a Lightning connector or MicroUSB option on checkout.