Xiaomi Portable Power source
The Xiaomi Mi Power Bank 3 has two USB-A ports and one USB-C port. The two USB-A ports can output at 5V/2.4A, 9V/2A, 12V/1.5A if only one port is used, or 5V/3A when both are. The singular USB-C port can out output at up to 45W. The Xiaomi Mi Power Bank 3 can charge in just 4.5 hours if you have a 45W charger. Using a regular 5V/2A charger will take about 11 hours to charge, while an 18W charger will take 6.5 hours.
What I’ve loved about Xiaomi power banks is that they support passthrough charging, which means that you can plug it in, plug your devices into it and it will charge those up before charging itself. That means that you can plug it in overnight, plug in your phone and both should (hopefully) be charged in the morning – all from one charger. The Xiaomi Mi Power Bank also supports low-power charging so that you can charge wearables and other low-power devices from it as well. It can sometimes be the case that power banks can’t output a low enough current that your device can accept.