Top Post Battery Disconnect Switch 12v,Battery Kill Switch Negative On/Off 12-48V Top Post Battery Switch Heavy-Duty Battery Disconnect Switch for Cars, Vehicles, RVs, and Boats

So far so good. Opening these up and trying them out by simply turning the knob seem simple enough felt like it was working, but I couldn’t resist once I saw the four screws in the back. I had to take one apart to see how sturdy the inside was built. I was happy to see that the components are very thick And strong as you can see in my pictures now I just need to put them on my cars and I can see clearly that when I turn it off, there is no connection and it will save my battery.

The part that connects to the battery post was not wide enough and when trying to separate it more to fit it broke a piece off. It is not functional anymore.

Was easy to install and is a good value

Doesn't really fit car batteries. Too small. We damaged the terminal on the battery trying to force it on only to find once it was on the cable clamp would not stay on the switch terminal no matter what we did. Waste of money. Glad it wasn't too expensive.

Works perfect in my car and made of good quality material.

very easy to install works great worst the money

Nice switch but the terminals are too small to fit a standard car battery so when I went to bend them a bit larger, the hard cast brass terminals just broke off, so not useful unless you can machine them to size or spend an hour with a good file..

Product is poorly made. As soon as I tried to tighten the cable to the post, the bottom broke out of the device because the plastic house is so thin. Can't tell you how good it works, it broke during instalation.