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Best Battery Disconnect Switches in 2021 Reviews

Safety is everyone’s primary concern, isn’t it?

Particularly where electric appliances and batteries are involved, people become extra cautious. And this caution is never too much because batteries are prone to causing fires and short circuits.

They can take only a specified amount of load, and any excessive battery drainage can be harmful. This is exactly why you need to have the best battery disconnect switch. It lets the battery provide only the required amount of voltage and disconnects when not in use.

Best Battery Disconnect Switches in 2021 Reviews

A battery disconnect switch also helps you keep your vehicle safe from thieves. Even if they have the right key, the car won’t start as you have cut off the power.

A battery disconnect switch also comes in handy when you are traveling long distances. You can use one battery while making sure that the other one retains its charge.

So, a battery disconnect switch is a definite necessity for vehicle owners. If you are willing to buy one, here is a comparison of the best battery disconnect switches in the market.

Comparison Table

ProductsWeightSizeAmp LoadRating
4.8 ounces
4.1 x 3.1 x 1.2 inches
Amp Load
200 Amp
4.3 out of 5 stars (4.3 / 5)
1.1 pounds
5.8 x 5.6 x 5.3 inches
Amp Load
125 Amp
4.7 out of 5 stars (4.7 / 5)
10.4 ounces
3 x 4 x 6 inches
Amp Load
300 Amp
4.5 out of 5 stars (4.5 / 5)
6.4 ounces
7 x 4 x 3 inches
Amp Load
275 Amp
5 out of 5 stars (5 / 5)
5.3 ounces
3.9 x 1.5 x 1.5 inches
Amp Load
125 Amp
4.3 out of 5 stars (4.3 / 5)
5.4 ounces
3.1 x 2.6 x 2.6 inches
Amp Load
500 Amp
4.4 out of 5 stars (4.4 / 5)
9.6 ounces
3.9 x 2.9 x 2.8 inches
Amp Load
455 Amp
4.6 out of 5 stars (4.6 / 5)

Review of the Best Battery Disconnect Switches

We are aware of the fact that just knowing the brief comparison of some switches is not sufficient for you. You need a detailed description of these products to know which one to dig for. Considering this, we have brought you a complete review of the best battery disconnect switches and a buying guide.

1 Top Post Battery Master Disconnect Switch

If you want the real deal when it comes to battery disconnect switches, then this is the one. It has a very compact size, which makes it easy to install on your battery. It fits with most battery wires as it has a standard-sized port.

The switch is so easy to install that you need to spend only 15 minutes on it. And that too, without any assistance from experts.

What makes its installation even easier is that it can be tightened by hand only. You do not have to worry about carrying a small wrench with you all the time. Just open the bonnet of your vehicle, twist the knob, and you are all set.

Another cool thing about it is that it is very lightweight. 4.8 ounces is nearly nothing when compared to the other battery disconnect switches in the market. The switch is a knob twist type, and this makes it easier to use while on the go. It disconnects all power supplies from the switch with just one twist.

So, it can save you both time and effort, if not money. Thus, you should choose it if your budget allows as it is a great battery disconnect switch.

Top Post Battery Master Disconnect Switch
Our rating:4.3 out of 5 stars (4.3 / 5)


  • Very easy to install.
  • Single knob twist disconnects power.
  • Weighs only 4.8 ounces.
  • Wheel nut can be hand tightened.
  • Design is quite compact.


  • Male post is too small.
  • Slightly more expensive.

2 QuickCar Racing Products Wide Handle Battery Master Disconnect Switch

QuickCAr Racing Products has gained a massive client base over the years with its reliable products. And they have stayed true to their name with this battery disconnect switch too. It has all that you would expect from a battery disconnect switch.

Its simplicity of design stands out the most to us. It has a rotary type switch, which is quite easy to turn on or off. The aluminum panel for the On/Off board makes it even more impressive. It does not rust or gets damaged due to changing weather. This way, it ensures a long and safe use of both your battery and the battery disconnect switch.

Moreover, the switch is very lightweight as it weighs only 1.1 pounds. It makes it easy for you to carry and install it. It also does not cause any dents or strain on your battery and other surrounding things.

The switch also has a reliable construction in terms of its size. The dimensions of 5.8 x 5.6 x 5.3 inches do justice to the space that your battery has for a switch. Its ports are also well-sized for most battery wire sizes. So, this battery is worth the money that you are required to spend on it.

QuickCar Racing Products Wide Handle Battery Master Disconnect Switch
Our rating:4.7 out of 5 stars (4.7 / 5)


  • Rotary switch type.
  • Very lightweight at 1.1 pounds only.
  • Impressive design at 5.8 x 5.6 x 5.3 inches.
  • Aluminum panel for On/Off switch.
  • 125 Amp battery load.


  • Mounting panel is quite small.
  • Difficult application for boats.

3 Blue Sea Systems m-Series Battery Switches

The Blue Sea Systems battery disconnect switch caught our eye with its powerful switching capability. It does not only control the flow from a single battery unit but also helps in multiple loads system too. This way, you can connect it with multiple loads at a time without having any power breaks or losses.

Other than this, the overall construction of this battery disconnect switch hits home with us as well. The switch has an appropriate size for standard-sized batteries with 3 x 4 x 6 inches dimensions. The flashy red flame looks attractive on a battery as well.

In addition to this, the red exterior makes the switch easy to locate as soon as you open your vehicle’s hood.

Furthermore, this battery disconnect switch regulates around 300 amp current flow. So, it can keep in line with all of your car’s current requirements as well. Its frame is also less prone to weather damage as well as any rusting as it is waterproof.

So, it is a great option for you if the specifications match your battery’s needs.

Blue Sea Systems m-Series Battery Switches
Our rating:4.5 out of 5 stars (4.5 / 5)


  • Delivers 300 amp current.
  • Completely waterproof design.
  • Connects a single battery to a load group.
  • Reliable switching without power breaks.
  • Compact construction at 3 x 4 x 6 inches.
  • Stylish red external frame.


  • No mounting hardware included.

4 BEP Battery Switches

This battery disconnect switch is one of the most liked switches on our list.

It has an easy to use mechanism for controlling the power supply from a battery. The flow of 275 amperes is certainly amazing, as this is what most vehicles and boats need.

Along with this, the knob has a counter-clockwise turning, which makes it safer and easier to use. The red knob stands out more against a black panel that resists damage caused by weather.

Also, it comes highly recommended due to its heavy-duty usage. Even if you are in the transporting business and need to drive your vehicle consistently, it will not give up on you.

Moreover, it has a standardized cut hole, which lets most wires slip through it easily. Then, the captive inserts make sure that these wires stay in their place.

Furthermore, the panel mount application is quite useful as it leaves the knob within easy access of the users. Thus, we recommend this battery disconnect switch for all the amazing features that it comes with.

BEP Battery Switches
Our rating:5 out of 5 stars (5 / 5)


  • Continuous flow of 275 Amp.
  • Great for panel mount application.
  • Standardized cut hole.
  • Captive inserts for 3/16″ nuts.
  • Weighs only 6.4 ounces.
  • Heavy-duty use.
  • Counterclockwise turning of the knob.


  • Tools needed for installation.

5 Ampper Side Post Battery Disconnect Switch

This battery disconnect switch is another great addition to our list of best battery disconnect switches. It has a very simple construction at 3.9 x 1.5 x 1.5 inches. This makes it both compact and easy to use.

In addition, this switch has a heavy-duty metal exterior that has a longer life. The brass construction enables it to withstand the daily wear that the switch has to go through. The switch also has a long bolt to keep the wires in their place once they have been fixed.

Furthermore, it has an easy to use knob, which turns off the power supply in one twist only. This helps you the most if you are out on the roads and need to cut off the power quickly.

So, it is a durable battery disconnect switch that will serve you for years.

Ampper Side Post Battery Disconnect Switch
Our rating:4.3 out of 5 stars (4.3 / 5)


  • Simple design with 3.9 x 1.5 x 1.5 inches.
  • Heavy-duty metal exterior.
  • Simpler usage with a knob.
  • Solid brass construction.
  • Long bolt for safer connection.
  • Weighs 5.3 ounces only.


  • Harder to locate on the battery.

6 Zoostliss Battery Kill Switch Isolator Disconnect Cut Off Power for Vehicles Marine Car Boat RV ATV

The Zoostliss battery disconnect switch works as an isolator switch on your vehicle’s battery. The best thing about it is the presence of 2 keys on the unit. These two keys make it easier to install the battery disconnect switch on the battery supply line.

It also prevents the wires of the battery from any wear and tear while you tighten the nuts. Moreover, the compact frame of the battery disconnect switch helps it stand out to us. The size is just incredible at 3.1 x 2.6 x 2.6 inches.

Also, it has the amperage load of 500 amperes that promise a better current supply without any hidden losses. This battery disconnect switch is also one of our favorites with its high resistance to weather damage.

It also has a high resistance to water damage due to the waterproof frame. Its brass construction makes it suitable for heavy-duty use as well.

So, overall, it is an amazing battery disconnect switch for modern vehicle owners.

Zoostliss Battery Kill Switch Isolator Disconnect Cut Off Power
Our rating:4.4 out of 5 stars (4.4 / 5)


  • 2 keys for easier installation.
  • Has sleek dimensions 3.1 x 2.6 x 2.6 inches.
  • 500 amp load dealings.
  • High resistance to weather damage.
  • Waterproof construction.
  • Solid brass construction and nuts.


  • Circuiting needs work on it.

7 Battery Switch Battery Disconnect Master Cutoff Switch

This is the battery disconnect switch to go for if you want both reliability and heavy-duty use. The knob type battery disconnect switch has a simple and compact design. The dimensions of 3.9 x 2.9 x 2.8 inches make it stand easily on the battery that you connect it to.

Moreover, it has a red-colored knob, which gains your attention as soon as you open the car’s hood. This saves your time, and you get to control the power supply from the battery more actively. The switch also has a contour locking system, which provides a safer user experience.

In addition, the copper studs to secure the wires have tin plating on them. It prevents any power losses or damage to the wires. These studs help in mounting the whole unit securely to the base as well.

Furthermore, the battery disconnect switch has a replacement warranty of 1 year. It makes the switch even more reliable for the customers, so you can choose this without any apprehension.

Battery Switch Battery Disconnect Master Cutoff Switch
Our rating:4.6 out of 5 stars (4.6 / 5)


  • Compact design at 3.9 x 2.9 x 2.8 inches.
  • Flashy red knob easy to locate.
  • Contour locking system.
  • Four removable side plates.
  • Copper studs have tin plating.
  • 1-year replacement warranty.
  • Heavy-duty cut-off switch.


  • Panel should be stronger.

Best Battery Disconnect Switches Buying Guide

Undoubtedly, buying the right battery disconnect switch is the key to having the safest experience. So, you have to be careful while going through your available options. To make it easy for you, here is a comprehensive buying guide for the best battery disconnect switches.


The size of a battery disconnect switch matters a lot as it affects so many aspects of use. It should not be so big that it occupies extra space in your vehicle’s bonnet. That can cause crowding, and things can get messy for you to handle.

On the other hand, too small a battery disconnect switch will not fit your battery properly. So, you have to go for the exact size details that your battery supports.


Another important consideration to make is the weight of a battery disconnect switch. This is so important because you do not want to put any strain on your battery. A heavy switch can indent the surrounding equipment as well. Thus, you should go for the lightest option available to you.

Battery Disconnect Switches


Now, the material of a battery disconnect switch is quite significant too. It should be strong enough to let the most current flow through it without any extra resistance. But it should also avoid rusting or corrosion as well. Aluminum planes are the best ones, so if you can find one, go for it.


Amperage load is crucial to a battery in many ways. It determines the rate of flow of the current. So, it should be in line with the needs of your car. An amperage load of 200 to 300 amp is the most common choice.


While you are investing in a battery disconnect switch, you need to have a surety that it is worth it. This is something that comes with a reliable warranty policy. Hence, you should invest in a battery disconnect switch that has a trustworthy warranty scheme.

Ingress Protection Rating

Ingress protection (IP) rating is something that you should not miss out on. It determines how resistant the case of a switch is to external environmental conditions. You should prefer the switch that has the highest IP rating to enjoy using the switch for a longer duration.

Type of Switch

The type of switch is also important when you are shortlisting different options. There are three major types of battery disconnect switches – knife blade, knob style, and keyed & rotary. Each one of them has different features. So, you have to be careful about the one you need.


The installation of a battery disconnect switch should never be hard. This is something that you can easily do yourself. Hence, you need to choose the battery disconnect switch that has easy installation. You can also go through the product descriptions and the instruction manual to see if it is worth it.


Price can be the ultimate break or make point for a battery disconnect switch purchase. You have to stay within your budget outline without compromising on the features needed. So, you should first determine the specifications that you need and then compare the prices of different models.


As we have already gone through a comparison chart, a product review, and a buying guide, you are surely now able to make the right purchase. Let’s go through everything quickly to make sure that you do not miss anything important.

A battery disconnect switch helps you have a safer car ride as there are lesser chances of hazards. It also acts as a safeguard against thieves and helps in saving the charge for other batteries.

In order to buy the best battery disconnect switch, you have to look at the ampere load very carefully. It determines the amount of charge that the battery drains or retains. The safety features and warranty are important as well.

And this is something that BEP Battery Switches does so well. It is clearly the winner battery disconnect switch on our list as it has high usability. Also, all of its features are for standard batteries, so it wins.


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