How much does the battery weigh?

Now, a small gas stove comes out, which is light and portable. A small pot of gas can bake for 2 hours, and two small pots can bake for 4 hours. The gas in two small cans is only a little more than 0.5KG. I'll send you a picture.

It is similar to a cassette oven, except that the oven is closed, and the temperature can be set regularly, so you don't have to look after it all the time. Just put in the material and set it up.