If you want to stay charged at your campsite this summer, you're going to need a little more than the usual battery pack. That's where Anker's PowerHouse comes in. The compact generator gives you an off-grid power supply that has enough juice to power a smartphone up to 40 times or even a laptop up to 15 times. The PowerHouse has 434 watt-hours of energy in a rugged aluminum, drop-tested housing and can even be recharged with a compatible solar charger for unlimited power. As for inputs, you get a 12V socket, AC, and four USB ports. 

$500, amazon.com