The charger just has a pair of alligator clips that need to connect to a 12V source. I use my car battery mostly, sometimes my field box for a smaller pack.

You can get some type of 12V power supply, but it needs to be capable of putting out 5A or more of continuous power. You also need to be very careful if charging indoors. Do not ever leave a charging LiPo unattended.

Good luck