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WirthCo 30300 Battery Doctor Standard Side Terminal Bolt

4.6 4.6 out of 5 stars 1,134 ratings
$8.88
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1 Count (Pack of 1)
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Purchase options and add-ons

  • Easy and reliable direct connections to the battery
  • Studs accommodate one or several 3/8 inch ring terminals
  • Excellent for trailer brake controls and other accessories requiring direct power
  • Direct-to-battery power circuits help reduce noise in stereo, communication and other electronic equipment
  • Solid brass construction
› See more product details

From the manufacturer


Standard Side Terminal Bolt

Product Features

  • 2.4 ounces Weight
  • This battery bolt features direct-to-battery power circuits to help reduce noise in stereo
  • communication and other electronic equipment.

WirthCo 30300 Battery Doctor Standard Side Terminal Bolt

Battery Doctor Standard Side Terminal Bolt

WirthCo Standard Battery Doctor Side Terminal Bolt is designed to replace the standard bolt in your battery terminal with a threaded stud. It provides easy and reliable direct connections to the battery. The studs can accommodate one or several 3/8 inch ring terminals.

They are excellent for trailer brake controls and other accessories requiring direct power.Solid brass construction ensures durability.

About WirthCo Engineering, Inc.

WirthCo Engineering, Inc. is entering our fourth decade as a prime manufacturer of practical products for making life easier and safer - at home, in the workplace, on the road, in the campground and on the water. We are grateful for valued employees and customers and we are dedicated to continuing growth based upon integrity and service. We are also proud of our heritage of providing innovative quality products.

Product Description

WirthCo® Standard Battery Doctor Side Terminal Bolt is designed to replace the standard bolt in your battery terminal with a threaded stud. It provides easy and reliable direct connections to the battery. The studs can accommodate one or several 3/8 inch ring terminals. They are excellent for trailer brake controls and other accessories requiring direct power. This battery bolt features direct-to-battery power circuits to help reduce noise in stereo, communication and other electronic equipment. Solid brass construction ensures durability. For over 30 years, WirthCo® has been a prime manufacturer of practical products for making life easier and safer. California Prop 65 - Warning, This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

Product information

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WirthCo 30300 Battery Doctor Standard Side Terminal Bolt

WirthCo 30300 Battery Doctor Standard Side Terminal Bolt

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  • 1 Manufacturers Branded Product

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    Price$8.88$9.89$10.48$5.60$11.15
    Delivery
    Get it as soon as Sunday, May 19
    Get it as soon as Monday, May 20
    Get it as soon as Monday, May 20
    Get it May 21 - 24
    Get it as soon as Monday, May 20
    Customer Ratings
    4.64.6 out of 5 stars1,134
    4.64.6 out of 5 stars50
    4.54.5 out of 5 stars85
    4.24.2 out of 5 stars184
    4.64.6 out of 5 stars1,134
    Easy to install
    4.5
    4.8
    4.4
    3.8
    4.5
    Value for money
    4.4
    4.5
    4.3
    3.3
    4.4
    Sturdiness
    4.8
    —
    —
    3.6
    4.8
    Sold By
    Amazon.com
    LZKZPY
    Jinkey
    The Wires Zone
    Amazon.com

    Looking for specific info?

    Customer reviews

    4.6 out of 5 stars
    4.6 out of 5
    1,134 global ratings

    Customers say

    Customers like the quality, value, appearance and ease of installation of the electronic component terminal. For example, they mention it works well, it's inexpensive and a good solution for a wiring harness. That said, opinions are mixed on the softness, threads and fit.

    AI-generated from the text of customer reviews

    138 customers mention129 positive9 negative

    Customers are satisfied with the quality of the auto part. They mention that it works well for its intended purpose, and is easy to install. Some say that it is made of brass and works smoothly. Overall, most are happy with the product's quality and functionality.

    "...This one is made of good quality metal and the finish is good. The threads were good and I could tighten it up without messing up the metal." Read more

    "...It's all brass and worked smoothly. Just what was called for...." Read more

    "Worked out great and very easy to install. I had to add a power terminal to the positive side off my battery" Read more

    "...the nut are metric, A very strange combination, Works okay to enable the stacked connection of the multiple cables I have going to each battery..." Read more

    28 customers mention28 positive0 negative

    Customers find the installation of the auto part simple. They mention that it's convenient and easy to add things to their vehicle. Some say that the post is practical and mechanically strong. They also say that it is an easy way to add feed to your stereo equipment directly from battery.

    "Worked out great and very easy to install. I had to add a power terminal to the positive side off my battery" Read more

    "...Simple, great value and effective.If this review was helpful please mark it as such 🖖..." Read more

    "...A junction has to happen somewhere and this post was convenient and don’t look to bad...." Read more

    "Does the trick. Installed easy as pie. 99 Astro van. Installed a subwoofer amp and needed to run a 4g wire. This allowed me to the job." Read more

    19 customers mention19 positive0 negative

    Customers find the auto part to be a nice product for the money. They say it's better than expensive batteries and an inexpensive solution for a wiring harness. Some customers also mention that the product is delivered to their house cheaply.

    "...Simple, great value and effective.If this review was helpful please mark it as such 🖖..." Read more

    "Decent for the cost. Installed for 4 or 5 months now no issues so far." Read more

    "...Very happy about the purchase and cheaper than any car audio place i visited." Read more

    "Worked perfect! Valuable especially if you have a Audio system running direct power to the battery for your amplifiers" Read more

    10 customers mention10 positive0 negative

    Customers like the appearance of the auto part. They say it looks good, is functional, and makes a great stand off. Some customers also mention that the battery posts are nice.

    "...shear off or strip out my new battery, served its purpose perfectly, looks good and holds its torque. Simple, great value and effective...." Read more

    "These are some nice battery posts...." Read more

    "It makes a great stand off and works as described...." Read more

    "...This was a simple fix, practical, mechanically strong and looks professional...." Read more

    9 customers mention9 positive0 negative

    Customers like the cables. They say it's a great solution to adding accessory cables for winch, amps, leds, and hookup battery jumper cables. It's also an excellent solution for custom battery cables on a side post battery and essential for side-post cable upgrades. Customers also mention that it'll conveniently add auxiliary connections.

    "...This extender allowed me to add several other cables. ONLY FITS THE NEGATIVE POST!..." Read more

    "...is soft to prevent damage to your battery and a great solution to adding accessory cables for winch, amps, leds, etc. NEED CORRECT NUT!" Read more

    "...(conveniently adding auxiliary connections)...." Read more

    "Good way for adding accessory wires onto a battery terminal" Read more

    52 customers mention26 positive26 negative

    Customers are mixed about the fit of the product. Some mention that it fits perfectly on the battery cable bolt, has plenty of length on the back end to stack up any reasonable number of ring lugs, and allows the bolt to securely tighten at the battery. However, others say that it only fits the negative post and didn't fit for their application.

    "...There is plenty of length on the back end to stack up any reasonable number of ring lug connectors. It's all brass and worked smoothly...." Read more

    "...The threads should be slightly longer but I got it to work but just barely" Read more

    "...These are threaded to screw onto the battery terminals, hold down the existing cables and allow plenty of room to add accessories on the top of..." Read more

    "...However, one issue, the long stud is NOT the same thread as the short side and the nut fits the short side...." Read more

    20 customers mention6 positive14 negative

    Customers have mixed opinions about the threads of the auto part. Some mention that the thread is good and they can tighten it up without messing up the metal, while others say that the brass construction makes the thread strip easily. Some say that it's a good overall piece, while other say that they received the nut on the wrong threads.

    "Just installed. Fit well. The internal threads are at a taper going inwards so it is impossible to get more than 3 to possibly 4 turns...." Read more

    "...The threads were good and I could tighten it up without messing up the metal." Read more

    "...The threads on the stock bolt were stripped causing the negative cable to come loose from time to time. Well those days are over...." Read more

    "...every connection removed thread length into the battery and damaged the threads." Read more

    10 customers mention4 positive6 negative

    Customers have mixed opinions about the softness of the electronic component terminal. Some mention that the material is soft to prevent damage to their battery, while others say that the threads strip easy.

    "...if you're delicate its impossible to keep em on the battery as the metal is soft and cant hold any slight torque so you never know when you stop...." Read more

    "...Would get 5 stars if it had the right nut. Material is soft to prevent damage to your battery and a great solution to adding accessory cables for..." Read more

    "...Plus the brass seems soft to me. Drop this once and the threads are ruined. Easily stripped, too." Read more

    "This terminal bolt is very good and its brass which is better, especially if you have an amp...." Read more

    Essential for side-post cable upgrades.
    5 Stars
    Essential for side-post cable upgrades.
    These are some nice battery posts. I used them to attach my battery/alternator/starter/ground cables I made for my 2005 Cadillac CTS-V. Buy some extra nuts, 3/8-24. You will lose some! This item is 1 post, so you will need to order quantity: 2. Make sure your connectors have a big enough opening to fit over the post or you will have to drill them out like I did. They seem like good quality. Very pleased with them.
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    Top reviews from the United States

    Robbysan
    5.0 out of 5 stars Good price and works well
    Reviewed in the United States on November 26, 2023
    Style: Top Mount Bolt and Nut, StandardSize: 1.440"Verified Purchase
    I have to add these for a couple of extra leads on my positive battery terminal in my Expedition. This one is made of good quality metal and the finish is good. The threads were good and I could tighten it up without messing up the metal.
    Helpful
     Report
    Gerald C.
    5.0 out of 5 stars Perfect Solution
    Reviewed in the United States on September 18, 2018
    Style: Side Terminal Bolt and Nut, LongSize: 1.750"Verified Purchase
    Sorry. I have no idea what someone is on about wrong nuts. I can only assume they got a factory mistake.

    I had the classic problem of needing to make direct battery connection, in my case, to power amateur radio gear. This does the trick. You undo the factory bolt that runs through the battery contact. The bolt doesn't just fall out. There's a plastic keeper. I just pulled the bolt out with pliers.

    The adapter has a bolt the same length as needed to attach the contact. There is plenty of length on the back end to stack up any reasonable number of ring lug connectors. It's all brass and worked smoothly. Just what was called for. There's a small bonus The factory bolt had a persnickity little head that was difficult to work with. The adapter has a much larger position for the wrench. Much easier to deal with when it's time to change batteries, although you will, of course, have to loosen the nut and probably remove the attached connectors to do that.
    10 people found this helpful
    Helpful
     Report
    Bootsie
    5.0 out of 5 stars Works great on my battery to extend the side post
    Reviewed in the United States on June 13, 2023
    Style: Side Terminal Bolt and Nut, LongSize: 1.750"Verified Purchase
    Worked out great and very easy to install. I had to add a power terminal to the positive side off my battery
    Helpful
     Report
    Amazon Customer
    4.0 out of 5 stars Strange Combo of US and Metric
    Reviewed in the United States on February 2, 2023
    Style: Top Mount Bolt and Nut, StandardSize: 1.440"Verified Purchase
    Despite what some of the answers to questions say above, the female thread on the brass coupler is 5/16 inch and fits the threaded vertical top terminals on the eight new Trojan T105 6 volt batteries I just installed in my motorhome, The male stud on the brass coupler is also 5/16 inch thread, However, the wrench flats on the brass coupler and the nut are metric, A very strange combination, Works okay to enable the stacked connection of the multiple cables I have going to each battery terminal, Price is excessive,
    Helpful
     Report
    Roger Cerda
    5.0 out of 5 stars Better than a Stinger brand terminal bolt
    Reviewed in the United States on August 3, 2023
    Style: Side Terminal Bolt and Nut, LongSize: 1.750"Verified Purchase
    I had replaced two stinger brand bolts already, absolutely garbage and so weak, even if you're delicate its impossible to keep em on the battery as the metal is soft and cant hold any slight torque so you never know when you stop. This bolt is awesome i was able to make it snug with no stripping issues so no more ground issues to my truck or amps. Not all expensive stuff is good especially now a days !
    Helpful
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    Monkeylair
    5.0 out of 5 stars Works like a brass bolt and nut should
    Reviewed in the United States on February 3, 2023
    Style: Side Terminal Bolt and Nut, LongSize: 1.750"Verified Purchase
    I ordered two. Thy fit snugly into the dreaded GM side terminals providing a better contact than the flimsy OEM connectors. An added benefit is being able to attach accessories, and not have to use little vice grips to test or charge the battery.
    One person found this helpful
    Helpful
     Report
    MC
    5.0 out of 5 stars Good quality bolt, not some cheap coated wannabe.
    Reviewed in the United States on March 5, 2021
    Style: Side Terminal Bolt and Nut, LongSize: 1.750"Verified Purchase
    Good quality, surprised me actually. Many of the other battery terminal bolts you see here on amazon twice the price are garbage, cheap and shear apart when you apply any pressure as you tighten them. Didnt shear off or strip out my new battery, served its purpose perfectly, looks good and holds its torque. Simple, great value and effective.

    If this review was helpful please mark it as such 🖖
    2 people found this helpful
    Helpful
     Report
    DT_52
    5.0 out of 5 stars Easy to install, good quality!
    Reviewed in the United States on January 7, 2023
    Style: Side Terminal Bolt and Nut, LongSize: 1.750"Verified Purchase
    Used these to add battery disconnect switches. They worked great, and are a good quality product.
    Helpful
     Report

    Top reviews from other countries

    Translate all reviews to English
    Mario
    5.0 out of 5 stars Excellent
    Reviewed in Canada on December 27, 2021
    Style: Side Terminal Bolt and Nut, LongSize: 1.750"Verified Purchase
    Excellent way to hook up external power wires to side posts on automotive batteries. Makes a very good connection and simplifies connecting power wires. Would recommend and will buy again in the future.
    Report
    Enrique Medrano
    5.0 out of 5 stars muy buen producto
    Reviewed in Mexico on August 5, 2021
    Style: Side Terminal Bolt and Nut, LongSize: 1.750"Verified Purchase
    me sirvió mucho para mis terminales de la batería lateral y me facilito nuevas conexiones
    Report
    Vern Alfred Burkhardt
    5.0 out of 5 stars Great solution for short battery posts
    Reviewed in Canada on May 18, 2021
    Style: Top Mount Bolt and Nut, StandardSize: 1.440"Verified Purchase
    Use it for my boat when I installed new golf cart batteries for the house system. They enabled me to hook up the number of connections required. Otherwise my new batteries would not have worked.
    Report
    Amazon Customer
    5.0 out of 5 stars good quality
    Reviewed in Canada on July 8, 2020
    Style: Side Terminal Bolt and Nut, StandardSize: 1 Count (Pack of 1)Verified Purchase
    good quality
    Report
    SparkyBC
    5.0 out of 5 stars Finally an answer for GM side posts.
    Reviewed in Canada on November 2, 2019
    Style: "Double Cable" Side Terminal Bolt and Nut, GM TruckSize: 1.832"Verified Purchase
    Worked perfect for gm’s stupid double side post terminals with the rubber boot, that gives you an accessory bolt. Besides using a bolt and nut this is the BEST OPTION.
    Report