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ZDNET always tests products before we recommend them, whether that's hands-on testing in our home or data-based testing in our lab in Kentucky. We've tested everything from tablets, portable power stations, and more to award them a Lab Award badge for outstanding performance.

For our power banks Lab Award, out of the 10 devices we tested in the lab, the Cuktech 15 Air charged to 100% the fastest. And right now, during Prime Day, you can get this award-worthy power bank for $64 ($16 off).

Also: June Prime Day live blog 2026: We're tracking Amazon deals on SSDs, TVs, laptops and more