Universal Top Post Battery Master Disconnect Switch Battery Isolator Switch

Excellent robust gadget - an easy fit onto standard battery terminals and connectors. Works perfectly to protect battery from "drains". Great value.

Nice quality units. Very easy to fit, less than five minutes once bonnet is up! Works well, switches on and off easily. Arcs a little when switched on as expected so with prolonged use may need cleaning on contact surfaces. Don’t over-tighten battery terminals or it may snap or damage when fitting. Keep it clean so no electrical tracking can take place which would cause slow discharge of battery. Make sure that there is room for it to fit next to the battery. Only fits on the negative terminal, makes it a little safer for DIY fitters when using a spanner near the battery, -presuming negative ground vehicles! Should increase life of battery as a good battery will only need a top-up charge occasionally. Definitely slows discharge times.Wish I had found these years ago instead of taking the terminal off every time!!

Works as expected, sticks out a bit far and was a squeeze to fit on my Zafira but can be done.Does the job of isolating the battery and reasonable price.

Bought for my classic nice and simple to use and very effective

Easy to fit, good value, amd saves me having to try and hunt down a parasitic drain!

Well made easy to use and unstable. Excellent quality perfect for standing cars for long periods of time. Easy to reconest power

I have been fitting these to various cars, and they are great quality. Simple to fit over the negative terminal, and they can then be used to disconnect the battery by turning the top wheel. Perfect for any car which isn’t used regularly, and of course you don’t need to remember your spanners when going to the lock up!I’ve also found that old battery clamps get damaged and are difficult to take on & off - with these you only need to attach the clamp once & don’t need to ever take it off again.I smear everything with Vaseline when fitting, and have found no issues with these isolators at all - some on the market are cheap and flimsy, but these are nice and sturdy. Highly recommended.

Cause me electrical problems that took a lot of stress to find after just 10months of use