"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." These portable gadgets marry solar panels with battery packs—they’re small and lightweight enough to not ...

Claims 20 watts maximum output. Has one USB-A output port, weighs 2.3 pounds, and can be laid flat or held at an angle using an integrated kickstand for charging. Has a 2 year warranty. You will get ...

Claims 200 watts maximum output. Uses XT60 connectors, and so may need adapters to work with other brand devices. Weighs 42.0 pounds. Can be used when laid flat or can be positioned at an angle using ...

I love to be prepared. I have phone chargers and cables and external batteries in multiple places to minimize my chances of ever running out of power. I’ve reviewed more than a few external batteries ...