ASW-A1002 Knife Blade Battery Disconnect Switch
ASW-A1002 Knife Blade Battery Disconnect Switch Design
ASW-A1002 ON-OFF Knife Blade Battery Disconnect Switch
ASW-A1002 Heavy Duty Knife Blade Battery Disconnect Switch
ASW-A1002 Knife Blade Battery Disconnect Switch for 15-17mm Tapering Post
ASW-A1002 Easy-Use Knife Blade Battery Disconnect Switch

12V-24V 250A ON-OFF Top Post Knife Blade Battery Disconnect Switch

Regular price$11.99
Shipping calculated at checkout.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

  • Descriptions
  • Shipping & Returns
  • Reviews


About this item

【Universal Compatibility】 This heavy-duty battery isolator switch is universally compatible with top post terminals and fits perfectly with the battery's negative post. It is suitable for a wide range of vehicles, including cars, trucks, buses, RVs, boats, and trailers. The switch can handle a maximum current of 750A and a rated current of 250A, making it ideal for both 12V and 24V systems.

【Efficient Function】 Our battery disconnect switch offers reliable on/off 2-position functionality for DC 12V-24V systems. With a continuous current capacity of 250A and a momentary current capacity of 750A at DC 12V, it ensures smooth and effective operation.

【Premium Quality】 Crafted from high-grade brass material, our top post-battery isolator switch exhibits excellent corrosion resistance and exceptional conductive performance, ensuring long-lasting safety and reliability in various applications.

【Easy Installation】 Installing this battery doctor knife switch for top post batteries is quick and hassle-free. With a simple adjustment at the bottom screw, the switch can be easily set into a vertical knife position. Switching off the knife cuts off the power effortlessly, making it a user-friendly choice.

【Battery Power Saving】 Our knife blade master switch effectively isolates and secures the electrical system, preventing any unnecessary power draw from the battery when the vehicle or boat is not in use. Say goodbye to unwanted battery drains and protect against theft or unauthorized use.

【Versatile Applications】 This heavy-duty battery isolator switch is a reliable solution for various vehicles and electrical systems. Its durability and efficiency make it a versatile choice for car owners, truck drivers, boating enthusiasts, and those with RVs or other electrical equipment. Upgrade your battery protection today and enjoy peace of mind during every journey.

What’s in the package

1 x Battery Switch


Part NO ASW-A1002
Function ON-OFF
Working voltage  12V-24V 
Rated Current 250A 
Crank Current 750A(12V)
Material Brass
Battery Negative Pole Range 15.5mm-17mm


Shipping & Returns

Free Shipping

We will use Economy International express service operated by China Postal Express. And it’s for light-weight products that less than 2kg with delivery in 10-25 days.

Expedited Shipping

You can choose this way, and normally we will use FEDEX or DHL. the shipping Rate is depend on the total weight of products, and delivery date will be 3-7 days.


Refund arrival time: 1-2 working days
Refund path: return to the original path
Refund contact information:


Customer Reviews

Based on 11 reviews
Matteo Visconti
All ok

All ok, good product. A little long time for delivering.

Marilyn M.

As a woman, this product came in handy when I had to leave my car for an extended period of time. I just opened the hood, pulled the switch and my battery was disconnected for a time.

Becky Jean

Got tired of using a wing nut to disconnect the camp trailer negative battery terminal when the trailer sits unused for days at a time. This disconnect switch works perfectly for that. Bolted it to the outside of the battery box.

Bobby Sisneros

Bought this switch to install on our 2003 Saturn ion battery. Took less than 15 min to install and it has worked like a charm. Best thing is it was very inexpensive and works!


This simple to install and easily operated kill switch has saved me so much hassle & grief.