We tested 22 portable power stations for over a year to find the best models for home backup, camping, road trips, and emergency power. . Check each product page for other buying options. Need help? . Portable power stations can deliver power when you need it most, whether during power outages or just for an off-grid adventure. These handy electricity suppliers vary in size, output, and energy source, not to mention durability. That's why we've tested 22 models since 2022; some we've kept on. . This powerful little battery pack is very flexible, it can act as a 5 volt battery or a 19 volt battery with 14 steps in between. 4V, 9V, 10V, 11V, 12V, 13V, 14V, 15V, 16V, 18V, or 19V. It. . Whether you want a backup in an emergency or just a way to power your phone when you are camping, you need to make sure you have the best portable power supply you can get your hands on. Unlike fixed power supplies, which deliver a constant voltage, variable power. . With their compact size and easy-to-use features, our portable power systems offer a convenient solution to keep your devices charged and your activities powered up.