Grace'sDad

I'd guess it's a 12v car lighter to 240v invertor. If so, I don't see any reason it wouldn't power your saw, as long as the engine is running otherwise the drain will be huge if you're running a saw.

This could also lead to a security risk i.e. van being nicked if left running!

I hear; I forget
I see; I remember
I do; and I understand.