Ampper Top Post Battery Disconnect Switch, 12-48 V Battery Power Cut Master Switch Disconnect Isolator for Car, Vehicle, RV and Boat (Negative, On/Off)

this is really a must have if you need to kill your battery connction overnight without the need for tools. the fitment isn't that great though. the battery post side of it is way too small. I had to get a pair of spreader pliars to widen it for the battery post to fit, and then had trouble screwing the clamp so it doesn't try to undo itself. put two shims on to make it work. I'd get it again, but I'd honestly want to mod it so it's not

Fit nicely on my Interstate battery's post in my 2005 Nissan Titan. Not sure what the concern is with fitment. Seems to do the job.

I have installed this on my RV battery to prevent draining while stored. Fits directly on the threaded terminals. Saves the batteries from the ‘background’ draw of the propane detector and other unnoticeable electrical components.

I chose this switch for it's size based on the size of the terminals on my boat's battery. It's done what I've asked, making sure I'm not losing charge when the boat is in storage. My only complaint is the metal has corroded pretty significantly over time. I'm not near salty air or anything, and the connections on the other terminal are fine, so not sure what's causing it.

How I love to write good reviews, but unfortunately on this product it was a major disappointment.First of all, the battery terminal they climbs onto the battery itself was way too small and I didn't want to bend the metal too hard because when just utilizing it a little bit to try to make the opening wider, the metal looked very cheap and then when I looked up the reviews many people said because of the poor quality metal that terminal would snap.Secondly, the auxiliary terminal that went on to the cable that is from the engine was way too small-and there was no way to tighten it to the main wire that usually goes onto the battery. All in all it was extremely disappointing and a lot of hard work for nothing because when I got it hooked up and checked all connections, while it could run the lights, and the battery was just charged-it just did not make a good internal connection-the whole thing was a waste of time and as I said, very disappointing.I can't believe all the good reviews on the item, it shakes my confidence in reviews in general when I see a product like this, and just picking it up in your hand and feeling the lightweight construction of the metal, is a certain telltale sign that it's just not quality. ~Sorry to the people who make this, it's always much more fun to write good reviews and if there is another side to this, and you feel my reviews unfair, I am always a person who is open to being corrected.

As ordered and as presented

Well constructed but I ended up returning it as it was slightly larger than I needed for the vehicle I was working on.

Got tired of all my battries being dead from small unknown drains, these fixed that, I just turn the battery off! I have ordered several times.