I love this AC charger. It charges most handheld devices you'd use everyday and TSA compliant. I used it to inflate an air mattress at Coachella from flat to full 3 times (using ac port) with no issues with juice to spare to charge my cell.
I have to knock off a star because the power button is frustratingly and easily pressed accidentally, both discharging your battery but also running its internal fan which, if inside a closed bag, could cause serious problems for its functionality. I solved this by taping a hotel keycard over the physical power button and that helps, but you probably shouldn't have to do this for such a pricey device.