I've had an inverter / electric chain saw combination for several years now. It's been a portable / temporary setup. I'd bring it along in the spring for limb/tree clearing. It has gotten a fair bit of impromptu as well as planned use. It worked well but it had a weakness in that at each use location I'd be opening the hood to connect jumper cables and then undoing the connection when the job was complete. It was a hassle that I wished to change.
In comes "version 2" of the setup! Here are two pictures of the completed setup. Additional pix are at the link. Enjoy.
www.JimWilliamson.net/automobile/2018-08-02--tech--power-inverter-mounting/