If only I could power an electric saw in a mobile manner from something like a car battery (or two)... Perhaps something like this: https://www.amazon.com/Sun-Joe-24V-10CS-CT-Cordless-Included/dp/B08HBS7WG1 At 24V I could wire two car batteries to provide 24V (12x2).

The only question is if the interface will work with only two conductors (don't know if the original battery has a third or fourth conductor without which the saw will not work).

https://images-na.ssl-images-amazon.com/images/I/61gnG3SPSnL._AC_SL1000_.jpg

Looks like there are 4 pins. Two for + and - as expected. The other two? No idea. Hopefully they are for the charging procedures and have nothing to do with powering the saw.