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🔋 Cut the power, not your freedom – master your battery with ease!
The Top Post Knife Blade Master Switch is a heavy-duty, brass-made battery disconnect switch designed for negative top post terminals. Supporting up to 750A max current and compatible with 6V, 12V, and 24V systems, it offers easy vertical installation and effectively prevents battery drain and unauthorized use across cars, trucks, RVs, boats, and more.
B**.
Very pleased!
Was it easy to install and works great! Would definitely recommend this and buy it again!
M**L
Good product
Great product if you store your vehicles. Obviously it disconnects the battery and stops the low current draw that many vehicles have to keep electronics alive
K**T
Great little gadget that saved my sanity and my car
I have a car with a battery drain. Great car but something drains my battery while it’s not in use. I use this to disengage my battery while I’m not driving. It’s easy to use. It’s saves me from getting stranded. Eventually I might figure out the drain issue but until then this is an inexpensive, easy, functional and durable way to be able to get on with my life and not worry that my car won’t start.
A**P
Great tool for prolonging battery life
Car batteries have near doubled in cost within 5 years. And the worst thing you can do to a battery is let it drain down to dead. If you have a vehicle that sits a lot, I highly recommend to either disconnect the battery or to take the time to charge it occasionally. That brings me to this product. I've used it twice now, once on a top mount and then this one on a side post mount. Here's my takeaway.The mechanism can be disassembled to arrange either the lever or the battery post mount on either side.This mechanism is fairly big. If you have a top mount, make sure there is ample clearance when closing the hood. Id say a good 2 inches is needed from the top of the battery to the bottom of the hood for this to clear. This side post version doesn't protrude up or out as far as the top post mount version making it slight easier to install and for clearance.I had to free up some length on my negative battery terminals to reach the new location of where it screws to this. It only makes it a few inches further of a reach but it was enough to make my cable too short. Thankfully, the fix was only to only pop off one cable retainer about a foot below the battery terminal. That let me route the battery cable at a slightly different angle and freed up a few inches in length.Things that could be better;The plastic bracket that both the lever and the post mount to is fairly flimsy. It's not a solid piece of plastic as I feel it should be. It's hollowed on the back side. I wouldn't be surprised if it breaks over the course of several years.It definitely could be designed slightly smaller.The allen head bolt and locking nut that act as the hinge pin for the lever was very loose. The nut was a dozen turns away from being tight. This bolt / nut set the tension on the lever arm, tighten accordingly.Each side of this mechanism has a Phillips head bolt that secures the post mount and the lever arm to its plastic bracket ( the one I feel should be a solid piece ) The tread contact points for this connection is dismal. Its the equivalent of threading a machine screw into a thick piece of sheet metal. I would highly recommend adding thread locker to those bolts.All in all, this thing is cheap and it's construction reflects it. Nevertheless, it's cheap insurance and a great tool to help prolong the life of a recreational vehicles battery. Don't hesitate to work with it to make it a little better or fit better for your application. But be gentle to some degree. Others have mentioned they've broken it during install. I could see that but I'd still put that back on them for being too forceful.If you have a vehicle that doesn't get driven much and you have a little bit of mechanic knowhow, give it this a shot. But don't set expectations too high. It works, it does., but yes, it could be better.
M**R
Saves the bettery
Good productIt stops my battery from being completely drained when the car is not used for a long time.
M**3
Very solid battery cut switch happy with purchase
Seems pretty sturdy easy to install battery cut off switch , to preserve the battery of an un driven vehicle installed in minutes Solid
G**D
Easy install
Worked well. I have electric bleed. With no it dead from where. Since truck not used all the time I just use this to cut power and when ready to use just throw switch on and away as go
S**I
Bulky.
Bulky. Not able to close the battery compartment while using this.
Trustpilot
2 weeks ago
1 month ago