Anker PowerHouse
With multiple lithium ion cells giving it a capacity of 434 watt-hours, the Anker PowerHouse is a smart alternative to portable generators. It has four USB ports for charging gadgets, a 12V socket for powering car accessories, and an AC outlet that can power anything from a laptop to a mini-fridge. Battery life obviously vaires depending on how you use it, but you can expect to get 40 phone recharges, 15 laptop charges, or over seven hours of mini-fridge operation before it's time to plug it back in.