"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When the power goes out, and you're not sure when it will come back on, knowing how long your power ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Start by making a list of the devices and appliances you need to power and add up the ...

A solar generator’s capacity is measured in watt-hours, and it can give you an idea of how long you can power devices. Higher-powered devices eat up more capacity, thus draining the battery faster.