I think you mentioned something like having the cables as close to 3 feet as possible one time Ken. I tried to get mine that short but ended up at about 4.5 feet. I did use @ gauge cable and ran the ground right to the starter bolt too.

Another nice thing is that they project a 3-10 year service life for these. In Florida (and probably other hot places like California) we are happy if a car or boat battery lasts 3 years. Some die as fast as 2 years.

Don