Lithium technology has ushered in a new era of batteries with exceptionally high energy density for a reasonably low cost.

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This iPhone 16 case features a built-in power bank that should get you through the day. It is slimmer and more robust than Mophie’s previous models, while still giving the user a 50% recharge to ...

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It also can control 5V and 12V fans automatically with no user input, and can run from any USB power source, so it’s not necessary to find a USB-PD-compatible source just to run a small fan.