How to charge the camera without PC

Hello, do you know how can I charge the theta camera if I do not have a PC ? What can I use ?

Although not officially supported, many people in the community use mobile phone chargers that output USB-C for the X,Z1 or microUSB for the V, SC2.

Again, although not supported by RICOH, I use mobile phone chargers for my RICOH THETA cameras every day and I personally have never had any problems.