I really like this 2-port USB-C charger.
Buy This Anker Powercore II Portable Battery Bank and Phone Charger on Sale
This Anker portable charger is currently on sale.
USB Charging Adapter or Power Bank?
USB power bank vs. cordless power tool battery and USB charging adapter? Which do you prefer?
Anker PowerHouse, a Huge Battery Pack and Generator Alternative
The Anker PowerHouse is a portable battery bank that’s equivalent to (6) 18V 4.0Ah battery packs, and it sports an AC outlet, 12V auto outlet, and 4 fast-charging USB outlets.