Simple Tips on How to Extend Battery Cables Safely

If you're working on a project and realize your power source is just a few inches too far away, you'll need to know how to extend battery cables without creating a fire hazard or losing power. It's one of those tasks that seems straightforward until you're staring at a thick piece of copper wire and wondering if your standard household tools are going to cut it. Whether you're relocating a car battery to the trunk, setting up a solar array in a van, or just trying to get a trolling motor to reach the back of a boat, getting this right is pretty much non-negotiable. ...

February 24, 2026 · 6 min · Jeroo Tulik