There are six power banks on my desk right now. On the shelves behind me are a dozen (two dozen?) more. Over the past three years, I’ve tested more than 55 portable battery packs for Engadget — and can attest these handy devices are only getting better. If you often forget to charge your phone or find yourself traveling for work or leisure, having one of these in your bag can be a lifeline. Here you’ll find banks ranging from Qi2-enabled slabs for wireless phone refills to larger bricks that can save a dying laptop. Here are the best power banks you can buy, according to our tests.
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