Need an extra boost of energy when you’re out and about? Over the past seven years, we’ve tested over 35 of the best portable chargers to bring you this selection of the 9 most promising options available today. We put these power banks through rigorous head-to-head tests using a digital multimeter and a simulated resistive load to ascertain their capacity. We assessed and scored each product based on portability, overall convenience, and user-friendliness. We considered additional features, size, and overall usability. Whether you’re looking to power your laptop while you travel or keep your phone from dying before you get home, we’ve found the best options for your electronics and your wallet.

We get the modern world’s reliance on a charged device. From our favorite USB wall chargers to wireless chargers and car chargers, we’ve put lots of products through their paces to determine the best gear for keeping your gadgets powered and ready to use. We’ve even tested portable jump starters for your car.