Jamess

It can be used because it can prevent the fire from spreading when the lipo battery burns. But do not use it in a high-temp

It looks like an AA cell battery， but requires a few. If you have a battery at home, you can just put it in and try it out

just stay at home and practice bashing with a sloping board in the yard

This is what I use, have a good experience with it https://www.ampow.com/ovonic-50c-4000mah-2s1p-hardcase-8-deans-lipo-battery.html By the way, I like hardcase for my car

If you need kit, Tamiya also has many options, such as Tamiya 1/10 Neo Scorcher TT-02B. If your budget also includes a controller and battery, then this one is suitable

Others have already describe in great detail, and I also have learned a lot. Anyway, I always handle my 4S lipo very carefully. If I don’t use it, I will discharge to 15.2v-16v before storing them.

thanks for your share, I will follow