Top-Mount Battery Terminal Quick Disconnect Switch
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AutoCraft Top-Mount Battery Terminal Quick Disconnect Switch

Part No. 20138 Warranty  
Stop unwanted battery drain and help prevent theft, tampering and unauthorized use. Improve the safety and security of stored classic vehicles, RVs and seasonal equipment. Mount on the negative battery post for quick and easy battery disconnection to help reduce battery drain.
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Cable Connection Type:TOP MOUNT
Connector Gender:Female
Corrosion Resistant:No
Key Or Security Protected:No
Material:BRASS, COPPER
Maximum Amperage:750 AMPS
Maximum Voltage:12 V
Mounting Type:Battery terminal clamp for mounting on the Negativ
Switch Type:Knife Blade Battery Disconnect Switch
USCG Rating:No

REVIEW SNAPSHOT®

by PowerReviews
AutocraftTop-Mount Battery Terminal Quick Disconnect Switch
 
4.2

(based on 22 reviews)

Ratings Distribution

  • 5 Stars

     

    (11)

  • 4 Stars

     

    (7)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (1)

86%

of respondents would recommend this to a friend.

Pros

  • Can withstand use (8)
  • Versatile (6)
  • Improves performance (3)

Cons

  • Flimsy (5)

Best Uses

  • Car (12)
  • Truck (7)
  • RV (4)
    • Reviewer Profile:
    • Casual driver (4)
    • Reviewer Profile:
    • Auto enthusiast (7), Casual driver (7)

Most Liked Positive Review

 

Works Great

I installed this disconnect on a 2010 Jeep Wrangler that needs the battery unhooked while towing. It's also nice to use it during long periods of storage. I would have given it 5 stars...Read complete review

I installed this disconnect on a 2010 Jeep Wrangler that needs the battery unhooked while towing. It's also nice to use it during long periods of storage. I would have given it 5 stars but the picture displayed isn't what you get. The one pictured has a RED lever which I assumed would be installed on the POSITIVE post when in fact it actually has a BLACK handle and installs on the NEGATIVE post. This is actually a better idea to disconnect the NEGATIVE. It works perfectly well for what it's designed to do.

VS

Most Liked Negative Review

 

Does what is advertised, but.....

Delivers as advertised, but not very attractive for a classic car owner (ME). I will keep if for a car that the battery is not visible like behind a seat or in a...Read complete review

Delivers as advertised, but not very attractive for a classic car owner (ME). I will keep if for a car that the battery is not visible like behind a seat or in a trunk, but under the hood I will go with another device that is better looking. I bought one that has a screw knob and is much smaller. Again, this one works, but is not appropriate for a classic show car.

Reviewed by 22 customers

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Displaying reviews 1-10

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(1 of 2 customers found this review helpful)

 
5.0

I would purchase this again

By RK the RVer

from Orlando, FL

About Me Rv With Toad

Verified Buyer
Level 1

Pros

  • Easy to install
  • Solves Dead Battery Issue

Cons

  • None

Best Uses

  • Car

Comments about Autocraft Top-Mount Battery Terminal Quick Disconnect Switch:

None

Comment on this review(earn points)

(1 of 1 customers found this review helpful)

 
1.0

Fell apart installing it...

By jeepwagons

from ohio

About Me Auto Enthusiast, Truck Enthusiast

Verified Buyer
Level 1

Pros

    Cons

    • Cheap And Fragile
    • Flimsy
    • Poor Value

    Best Uses

      Comments about Autocraft Top-Mount Battery Terminal Quick Disconnect Switch:

      Bought this to discoonet my trail rigs battery when not it use. Fell apart when installing it...

      Comment on this review(earn points)

      (1 of 1 customers found this review helpful)

       
      5.0

      Just what I needed!

      By JCJ

      from Byers, CO.

      About Me Auto Enthusiast

      Verified Buyer
      Level 2

      Pros

      • Versatile

      Cons

      • Flimsy

      Best Uses

      • Truck

      Comments about Autocraft Top-Mount Battery Terminal Quick Disconnect Switch:

      We have a farm van we use as our workhorse at our property and this was exactly what we needed. It sits for weeks at a time without use and this makes it really easy to keep the battery in good condition without needing tools every time. It is a little flimsy, but works perfect ... just be gentle.

      Comment on this review(earn points)

      (12 of 24 customers found this review helpful)

       
      4.0

      Works Great

      By Rockjeeper

      from P.I., TX

      About Me Truck Enthusiast

      Verified Buyer
      Level 2

      Pros

      • Can Withstand Use
      • Improves Performance

      Cons

      • Not as pictured

      Best Uses

      • Towed Or Stored Vehicle

      Comments about Autocraft Top-Mount Battery Terminal Quick Disconnect Switch:

      I installed this disconnect on a 2010 Jeep Wrangler that needs the battery unhooked while towing. It's also nice to use it during long periods of storage. I would have given it 5 stars but the picture displayed isn't what you get. The one pictured has a RED lever which I assumed would be installed on the POSITIVE post when in fact it actually has a BLACK handle and installs on the NEGATIVE post. This is actually a better idea to disconnect the NEGATIVE. It works perfectly well for what it's designed to do.

      Comment on this review(earn points)

      (17 of 32 customers found this review helpful)

       
      2.0

      Flexing mount area

      By John

      from Alabama

      About Me Auto Enthusiast, Mechanic

      Verified Buyer
      Level 2

      Pros

      • Strong Switch Material

      Cons

      • Flimsy
      • Plastic Base Is Flimsy

      Best Uses

      • Boat

      Comments about Autocraft Top-Mount Battery Terminal Quick Disconnect Switch:

      While the brass switch is strong the plastic base is cheap and flimsy. I had to take precautions to not break the base while installing it. I'm afraid the battery cable is going to break the switch into. The plastic base is very thin.

      Comment on this review(earn points)

      (17 of 31 customers found this review helpful)

       
      3.0

      Does what is advertised, but.....

      By John

      from Arlington, TX

      About Me Auto Enthusiast

      Verified Buyer
      Level 2

      Pros

        Cons

          Best Uses

            Comments about Autocraft Top-Mount Battery Terminal Quick Disconnect Switch:

            Delivers as advertised, but not very attractive for a classic car owner (ME). I will keep if for a car that the battery is not visible like behind a seat or in a trunk, but under the hood I will go with another device that is better looking. I bought one that has a screw knob and is much smaller. Again, this one works, but is not appropriate for a classic show car.

            Comment on this review(earn points)

            (15 of 30 customers found this review helpful)

             
            5.0

            Wirthco Top-Mount Battery Terminal Quick

            By mflowers

            from Dillsburg, PA

            About Me Casual Driver

            Verified Buyer
            Level 2

            Pros

            • Can Withstand Use

            Cons

              Best Uses

              • Car

              Comments about Autocraft Top-Mount Battery Terminal Quick Disconnect Switch:

              Great product. Solved my dead battery problems at my vacation condo.

              Comment on this review(earn points)

              (19 of 34 customers found this review helpful)

               
              4.0

              didnt fit, not enuf room by battery

              By DonnyRay

              from Cincinnati, OHIO

              About Me Auto Enthusiast, Casual Driver

              Ask me a question

              Verified Buyer
              3 or more reviews submitted

              Pros

                Cons

                • Too Large To Fit

                Best Uses

                  Comments about Autocraft Top-Mount Battery Terminal Quick Disconnect Switch:

                  Requires sufficient room next to battery to install. Was not enough room next to the battery in my Mustang to install it. Am returning it. Looks very well constructed and heavy duty. Can change the post/lever to the other side to help fit. If you have plenty of room next to your negative ground would be a great item to have.

                  Comment on this review(earn points)

                  (19 of 35 customers found this review helpful)

                   
                  3.0

                  Happy with purchase

                  By Jim

                  from Hana, Hi

                  About Me Casual Driver

                  Verified Buyer
                  Level 2

                  Pros

                    Cons

                    • Flimsy

                    Best Uses

                      Comments about Autocraft Top-Mount Battery Terminal Quick Disconnect Switch:

                      Got this product to safely disconnect battery when my machine is not in use
                      It functions exactly like it should so to say the least I'm very happy with the product
                      If I had a problem with the product it would be the base, it is a little flimsy
                      But not a deal breaker

                      Comment on this review(earn points)

                      (19 of 35 customers found this review helpful)

                       
                      4.0

                      Battery Knife switch

                      By KrispyB

                      from Quartzsite, AZ

                      About Me Casual Driver

                      Verified Buyer
                      Level 2

                      Pros

                        Cons

                          Best Uses

                          • Car
                          • RV
                          • Truck

                          Comments about Autocraft Top-Mount Battery Terminal Quick Disconnect Switch:

                          I wish your catalogue would have had the dimensions from end to end. I needed one that was 1-3 inches longer.

                          Comment on this review(earn points)

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                          Do you have questions about this product?(earn points for answers!)

                           

                          Ask a question, get answers from real customers and in-house experts. Or contact Customer Care by email or call 1-877-238-2623.

                          12 Questions | 12 Answers
                          Displaying questions 1-10Previous | Next »
                          • Q:

                            will this work with marine battery applications
                            Asked on 7/5/2013 by BB from NC

                            1 answer

                            • CUSTOMER CARE

                              A:

                              The specification of the existing battery matches this Autocraft Top-Mount Battery Terminal Quick Disconnect Switch - Part No. 20138, you very well to use this on your marine application. Specifications : maximum amperage : 750 amps, maximum voltage : 12 V, mounting type : battery terminal clamp for mounting on the negative. For any further assistance please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

                              Answered on 7/5/2013 by Morgan from AAP
                          • Q:

                            Will this work on a 1966 Corvette, a 1966 Austin Healey and 1977 MGB?
                            Asked on 4/6/2013 by Gator from NYC

                            1 answer

                            • CUSTOMER CARE

                              A:

                              This Wirthco Top-Mount Battery Terminal Quick Disconnect Switch (Part No. 20138) is universal and not a vehicle specific part. It is top mount connection type. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.

                              Answered on 4/7/2013 by Morgan from AAP
                          • Q:

                            Will this work on my Lexus sc400 1994 and how do I know if I need the top mount or side mount
                            Asked on 11/19/2012 by Lexus

                            1 answer

                            • CUSTOMER CARE

                              A:

                              This Wirthco Top-Mount Battery Terminal Quick Disconnect Switch (Part No. 20138) is universal and not a vehicle specific part. It is top mount connection type. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.

                              Answered on 11/19/2012 by Steve from AAP
                          • Q:

                            Will this item work on an early 90's Blue Bird bus with 5.9 litre Cummins engine? It is a 12 volt system.
                            Asked on 5/13/2012 by Swamper from Tennille, Georgia

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Yes, this Wirthco Top-Mount Battery Safety Knife Blade Disconnect Switch - Part No. 20138 should work in maximum amperage of 750 amps and maximum voltage of 12V.

                              Answered on 5/15/2012 by Steve from AAP
                          • Q:

                            Is there a way to prevent the radio from resetting while using this battery disconnector?
                            Asked on 2/4/2012 by Anonymous from NY, NY

                            1 answer

                            • CUSTOMER CARE

                              A:

                              A device called battery tender which is plugged into the cigar lighter socket while using battery disconnector to not only hold the radio station presets, clock settings but also keep the on-board memory alive for the power-train control module (PCM).

                              Answered on 2/8/2012 by Vincent from AAP
                          • Q:

                            Can this switch be used on a Ford Diesel, two battery 12V system? The two batteries share one common cable so a connection on the right side battery will disable both.
                            Asked on 11/26/2011 by J.T. from NY

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Yes, this should work fine for your application.

                              Answered on 11/28/2011 by Vincent from AAP
                          • Q:

                            Can this be used on a Kubota L4300DT tractor?
                            Asked on 8/2/2011 by Anonymous

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Yes, you should be able to us this switch on your vehicle.

                              Answered on 8/2/2011 by Steve from AAP
                          • Q:

                            Can this be used on the postive side of the battery?
                            Asked on 7/13/2011 by Anonymous

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Mount on the negative battery post for quick and easy battery disconnection to help reduce battery drain.

                              Answered on 7/14/2011 by Vincent from AAP
                          • Q:

                            My vehicle instructions for charging the battery say to remove the battery from the vehicle. Since the battery disconnect switch is mounted on the negative terminal would charging the battery with the positive terminal still conected to the vehicle cause a problem or can charging be done safely with this switch in disconnect position?
                            Asked on 6/19/2011 by Anonymous

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Charging can be done safely with this switch in disconnect position.

                              Answered on 7/14/2011 by DIY Daniel from AAP
                          • Q:

                            Will this work on a 2011 Ford Fiesta?
                            Asked on 4/24/2011 by Anonymous

                            1 answer

                            • CUSTOMER CARE

                              A:

                              You should be able to use this on your vehicle.

                              Answered on 4/27/2011 by David the Dynamite Parts Guy from AAP
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