Jackery Bolt USB-C/MicroUSB, $26 with code BZ3YV6JR

USB battery packs are basically just expensive paperweights if you don’t have a charging cable handy, but the Jackery Bolt solves that problem by building them right in.

Previous deals on the Bolt have catered to Apple users, with its built-in Lightning and microUSB cables. This new version though swaps out Lightning for USB-C, so basically every Android device should be supported. Plus, its extra USB port means you can plug in whatever cable you want, including a Lightning cable.