In addition to its built-in USB-C cables, the power bank has one USB-C port and one USB-A port, so you can charge up to four devices at once (mind you, this drops the total combined charging speed to 130W). Its convenient LCD screen shows its current capacity along with how much power is being drawn by devices connected to it.

Learn morePortable power stations are usually the type of item you don't think about needing until you actually need them. If you're not interested in splurging on frivolous items but are still searching for useful deals this Prime Day,

Anker is selling their 737 Power Bank for 30% off. If you're constantly looking for a charger, it's worth getting some backup juice.