Is it possible to change the Power Magic Ultra Battery (or Expansion Battery) at home?

I am working from home and my car often stays parked for more than a day, some times several days in a row. No battery even with expansion pack would hold that long.

Cars are getting broken into on a daily basis in our district, so I must have alarm on at all times.

I could easily charge a second battery at home and swap them in a car every evening, keeping the dashcam (and mobile router) always on.

I would need to get a second battery and a way to power it on at home.

Is there an easy way to power the Power Magic Ultra Battery B-124 at home? I didn't get any adapters for a home power socket with the battery. Maybe it is easy to get one from common stock?