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Fastronix Military Spec Battery Terminal Top Post Kit

4.7 out of 5 stars 1,241 ratings

$33.99
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About this item

  • USA Made Battery Terminals and Covers!
  • (1) Positive and (1) Negative Lead Alloy Battery Terminals for Increased Strength and Reduced Corrosion
  • (4) 3/4"x 1-1/2" adhesive lined heatshrink (4) 2 gauge 3/8" copper lugs
  • (1) Red and (1) Black Military Spec Battery Terminal Covers
  • All in One Kit for Multiple Battery Installations (Battery Cable Not Included)

Additional Details

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4.74.7 out of 5 stars 1,241
$33.99
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4.64.6 out of 5 stars 868
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Product description

Fastronix
quality

Standard Features

Terminal

Cast Lead Terminals

  • Lead construction allows terminals to effectively grab battery terminals
  • Standard size fasteners (1/2" top / 9/16" bottom)

Installation Instructions:

  • Slide terminals over battery lugs
  • Slowly tighten short bolt until the terminal won't rotate.

heat shrink

Durable Adhesive Lined Heat Shrink

  • Fully seal your battery terminal connectors

Installation Instructions:

  • Slide heat shrink over crimped or soldered terminal.
  • Using heat gun on high temperature setting, evenly warm the heat shrink until it fully seals the connection.
  • Allow heat shrink to cool to room temperature.

Lugs

Quality Copper Lugs

  • Designed for 2 gauge wire
  • 3/8" hole allows for installation on the long bolt of the terminal

Installation Instructions:

  • Strip approximately 1/2" of insulation from the battery cable.
  • Insert the battery cable into the terminal and crimp using a crimping tool.

covers

Durable Terminal Covers

  • Prevents corrosion and incidental shorting.
  • Gives professional look to your installation.

Installation Instructions:

  • Slide cover over wires to be installed
  • Install wires onto the long bolt of the terminal.
  • Slide covers over the terminals.

Fastronix Quality Copper Battery Terminal Lugs 4 Pack (3/8" 4 Gauge)
Fastronix 90 Degree Tinned Copper Lugs 3/8" 2 Gauge 2 Pack
Fastronix 90 Degree Tinned Copper Lugs 3/8" 4 Gauge 2 Pack…
Fastronix 45 Degree Tinned Copper Lugs 3/8" 2 Gauge 2 Pack
Fastronix 45 Degree Tinned Copper Lugs 3/8" 4 Gauge 2 Pack
Customer Reviews
4.6 out of 5 stars 212
4.6 out of 5 stars 128
4.6 out of 5 stars 128
4.8 out of 5 stars 44
4.8 out of 5 stars 44
Price no data $9.99 $9.99 $9.99 $9.99
Compatible with Fastronix Military Battery Terminals
2 Gauge Cable no data no data no data
4 Gauge Cable no data no data
Fastronix Military Spec Battery Terminal Top Post Kit
Fastronix Top Post Military Spec Battery Terminal and Cover Kit
Fastronix Military Spec Battery Connectors- Positive Terminal
Fastronix Military Spec Battery Connectors- Negative Terminal
Customer Reviews
4.7 out of 5 stars 1,241
4.8 out of 5 stars 893
4.4 out of 5 stars 109
4.4 out of 5 stars 109
Price $33.99 $25.99 $11.99 $11.99
Terminal Covers no data no data
Positive Battery Terminal no data
Negative Battery Terminal no data
3/8" 2 Gauge Copper Lugs no data no data no data
Adhesive Lined Heat Shrink no data no data no data

Product information

Technical Details

Manufacturer ‎Fastronix Solutions
Brand ‎Fastronix Solutions
Item Weight ‎1.15 pounds
Package Dimensions ‎8.07 x 6.57 x 1.1 inches
Item model number ‎940-400
Is Discontinued By Manufacturer ‎No
Manufacturer Part Number ‎940-400
Voltage ‎12 Volts

Additional Information

ASIN B00X36RILW
Customer Reviews
4.7 out of 5 stars 1,241 ratings

4.7 out of 5 stars
Best Sellers Rank
Date First Available May 4, 2015

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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Fastronix Military Spec Battery Terminal Top Post Kit


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Customer reviews

4.7 out of 5 stars
1,241 global ratings

Customers say

Customers find these battery terminals to be well-built and heavy-duty, featuring military-style cable ends and solid connections. They are easy to install, with one customer noting they work particularly well for winch and light installations, and customers appreciate their clean, professional appearance. Customers consider them the best replacement terminals available, offering good value for money.

220 customers mention "Quality"219 positive1 negative

Customers praise the quality of the battery terminal kit, describing it as a well-built product with high-quality terminals.

"Great product. I have a 2015 Ford F350, the battery post on the truck broke, Ford doesn't make new ones, ordered two sets of these. They work great." Read more

"Great quality! I think it would work better if it came with #0 ends, who used #4-6 for battery terminals?" Read more

"Good quality. I wish the plastic terminal protectors were a little more tight. But I'll take too big vs. too small." Read more

"This is the real deal. Clean install, safe, well made. I was so impressed I purchased another. You will love this kit." Read more

85 customers mention "Works great"81 positive4 negative

Customers find that the battery terminal kit works well, with one mentioning it performs perfectly as a replacement part and another noting it functions effectively for winch wiring.

"Product is fantastic. Works great. Just wish it came with more than the given terminals...." Read more

"work great, my old posts kept corroding and after installing these; no corrosion at all and very heavy duty." Read more

"Worked great. Replaced a 34 year old CUCV battery connection that was beyond corroded. Looks great now too." Read more

"used this to replace the old stock ones on my 01 tacoma, works great and has not loosened up at all" Read more

83 customers mention "Heavy duty"82 positive1 negative

Customers appreciate the heavy-duty construction of these battery terminals, noting they are made with military-style cable ends and are suitable for heavy-duty use.

"Well made,heavy duty, well thought out product. No instructions but found one you tube video ( that’s why I bought it)...." Read more

"Bought these for my off-road Jeep and they work perfect. Heavy duty and allows for addition of winch cables. Came with everything I needed...." Read more

"These are awesome connectors. They are robust, solid, and form a very tight connection to the battery...." Read more

"...connections, the heat shrink and the heavy-duty rubber covers, this is sturdy, well-made hardware that seems like it'll last longer than my truck will" Read more

66 customers mention "Ease of installation"64 positive2 negative

Customers find the battery terminal top kit easy to install, with one customer specifically mentioning how convenient it is to hook up winches and lights to the battery.

"Love the kit. Well made product, easy to install, and pretty much plug and play...." Read more

"Easy to install. Very clean looking and heavy duty. Fixed my issue with the Jeep not starting from corroded terminals...." Read more

"...Otherwise, great looking product and easy install. Highly recommended this upgrade for your corroded wiring terminals." Read more

"Love this top post kit. Makes everything look good and secure. Super easy to install." Read more

50 customers mention "Battery connectors"48 positive2 negative

Customers appreciate the battery connectors, describing them as solid terminal connectors with high-quality cable connections.

"These terminals are great! I didn't use the supplied lugs because I had to run significantly larger cables for my dodge...." Read more

"A bit expensive, but a nice solid connection." Read more

"...The terminals had a great, snug file on the battery posts. The covers were also a great fit...." Read more

"These are the best battery terminal connectors I could find and they're well worth it. Easy to assemble and good quality." Read more

47 customers mention "Look"46 positive1 negative

Customers appreciate the appearance of the battery terminal kit, noting its professional and well-designed terminals that create an ultra clean-looking installation.

"Looks great. Went on my CJ5 because i needed better mounting options for the positive and negative cables for the winch and for another fuse box...." Read more

"...I have a wj jeep 2002 grand cherokee These worked awesome and look great. Will definetly buy for my boat and 70 Camaro. So much better" Read more

"I really like this style of top battery posts...." Read more

"works and looks great" Read more

47 customers mention "Terminal size"42 positive5 negative

Customers are satisfied with the terminal size, finding them to be the best replacements available, with one customer noting they are specifically designed for positive and negative connections.

"Great terminals" Read more

"...ever go back to non-military style terminals again- it's SO nice to remove the wires without having to take the terminal off the post and wear it out." Read more

"...clamp down well on the post and give u a long bolt that is great for adding any wires u need to it the covers are a heavy rubber that was more than..." Read more

"...parts made by a machinist, you can go with this kit that includes military grade terminals, rubber boots, and 4 crimp on cable ends and shrink wrap..." Read more

43 customers mention "Value for money"35 positive8 negative

Customers find the battery terminal kit to be good value for money.

"...I could have soldered them in as well. Best of all great value!" Read more

"...Very happy with this quick fix for a great price." Read more

"...are the best battery terminal connectors I could find and they're well worth it. Easy to assemble and good quality." Read more

"Great value, super rugged terminals...." Read more

Worth The Investment
5 out of 5 stars
Worth The Investment
This kit was more expensive than it would have been to replace the OEM parts, but it was well worth it. I purchased this to replace the terminals on a 2001 Tacoma with the 3.4 V6. The kit is complete, you'll just need to remove the old terminals and then 1/2" and 9/16" wrench to tighten things down, a crimper, and something to heat shrink the included wraps. The install was straight forward enough. I'm not sure if my terminals had been replaced before, so I had just enough wire to make the replacement. It would be nice if the kit came with a couple of smaller gauge crimp connections that will still bolt to the terminal, as I had to mock up a connection for the ground wire. All in all, between the crimp connections, the heat shrink and the heavy-duty rubber covers, this is sturdy, well-made hardware that seems like it'll last longer than my truck will
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Top reviews from the United States

  • Reviewed in the United States on May 13, 2025
    The finished product looks great. It actually turned out well, I work on my cars but I never really get too deep in automotive electrical. I’ve swapped plenty of batteries but never had to replace the ends. The whole operation was smooth but I was able to utilize my Greenlee K05 crimpers, which are not an every man’s tool. There are similar style tools available for cheap here on Amazon so I’d look into those if you’re going to install this kit. I don’t recommend trying to hammer or squeeze the ends with anything else, crimpers are a specific tool for a reason. I’d fear using any other method will lead to having a bad connection - arcing - electrical fire - no more car. The rubber plastic finish covers didn’t work out though, the intent was nice but it just wasn’t meant to be.
  • Reviewed in the United States on January 20, 2021
    These are excellent top post battery terminals. I've bought two of these kits and both have been high quality. They work great for wiring a winch or other aftermarket electrical accessories that need to connect directly to the battery because you can place large ring terminals on either side of the through bolt, allowing more space to add wires. The use of ring terminals for the individual wires also allows you to easily disconnect the battery without removing the lead terminals themselves. This will help make the lead terminals last longer, as repeatedly removing them from the battery posts deforms the lead and eventually reduces the capability of the terminals to clamp the posts.

    This kit includes everything you need to wire in the new terminals, including four crimp on ring terminals for your battery cables, heat shrink for the ring terminals, bolts to attach the lead terminals and battery cables, and nice rubber covers that are color coded. All of the hardware is high quality. The ring terminals are too big for normal crimps, so you will either need a set of battery cable crimps, or use vice grips like I did (not ideal but works, and you can cover the ugly crimp with the heat shrink...)
    2 people found this helpful
    Report
  • Reviewed in the United States on November 30, 2019
    This kit was more expensive than it would have been to replace the OEM parts, but it was well worth it. I purchased this to replace the terminals on a 2001 Tacoma with the 3.4 V6. The kit is complete, you'll just need to remove the old terminals and then 1/2" and 9/16" wrench to tighten things down, a crimper, and something to heat shrink the included wraps.

    The install was straight forward enough. I'm not sure if my terminals had been replaced before, so I had just enough wire to make the replacement. It would be nice if the kit came with a couple of smaller gauge crimp connections that will still bolt to the terminal, as I had to mock up a connection for the ground wire.

    All in all, between the crimp connections, the heat shrink and the heavy-duty rubber covers, this is sturdy, well-made hardware that seems like it'll last longer than my truck will
    Customer image
    5.0 out of 5 stars
    Worth The Investment

    Reviewed in the United States on November 30, 2019
    This kit was more expensive than it would have been to replace the OEM parts, but it was well worth it. I purchased this to replace the terminals on a 2001 Tacoma with the 3.4 V6. The kit is complete, you'll just need to remove the old terminals and then 1/2" and 9/16" wrench to tighten things down, a crimper, and something to heat shrink the included wraps.

    The install was straight forward enough. I'm not sure if my terminals had been replaced before, so I had just enough wire to make the replacement. It would be nice if the kit came with a couple of smaller gauge crimp connections that will still bolt to the terminal, as I had to mock up a connection for the ground wire.

    All in all, between the crimp connections, the heat shrink and the heavy-duty rubber covers, this is sturdy, well-made hardware that seems like it'll last longer than my truck will
    Images in this review
    Customer image
  • Reviewed in the United States on June 2, 2025
    Good kit
  • Reviewed in the United States on October 5, 2024
    I only used the positive terminal since that was the bad one, did have to get smaller connectors since the ones with the kit were way too big. Swapped the terminal in, no more starting issue, cranks nice and quick
  • Reviewed in the United States on June 15, 2018
    These are awesome connectors. They are robust, solid, and form a very tight connection to the battery. Several individuals that know cars have looked under my hood and made a point to mention that these connectors look and feel great. In my opinion they are far superior to the steel band clamps that come OEM on many vehicles.

    A word of caution... DO NOT SOLDER the copper lugs onto your battery cables. These are crimp lugs, and crimp lugs are designed to be crimped, not soldered. Soldering will eventually cause your battery cables to break off, or worse, partially break causing a high resistance point that can lead to fire. The correct way to install the lugs onto your battery cables is to use a hydraulic crimper or a hammer-anvil type. The hydraulic crimper will form the best connection, but the hammer-anvil type is cheaper and will work fine for someone who only has to install these types of lugs once. Simply search Amazon for lug crimper.
    35 people found this helpful
    Report
  • Reviewed in the United States on March 6, 2020
    Well made,heavy duty, well thought out product.
    No instructions but found one you tube video ( that’s why I bought it).
    I have used solder connections like these before so I knew what to expect( tools , procedure).
    Basically you hold the connectors upright in a vice ( if you have wires loose from the car) or in something portable (like a pair of vice grips or I used a block of wood with slots cut in it to hold the connector upright).
    First put a small amount of flux paste in cup of connector , then heat on low heat with map or propane gas almost immediately add your solder ( I used 60 /40 )until the cup is 3/4 filled.
    Have your wire in the car striped and cleaned and fluxed before hand.Quickly carry whatever your using to hold your connector to car and push the wire down into the connector , it stays hot molten for a surprisingly long time.
    Hold for about 30 seconds ( wear gloves because the wire will get hot). If put it in crooked it will stay that and let go of it too soon it will pop out. Then put on your heat shrink.
    2 people found this helpful
    Report
  • Reviewed in the United States on July 26, 2025
    Complete set-up. Worked great with 2AWG strander copper inverter cables from Harbor Freight to replace all the battery cables and geounds in my Jeep Wrangler.

Top reviews from other countries

  • Dan
    5.0 out of 5 stars High Quality
    Reviewed in Canada on December 8, 2020
    Was nervous looking for new contacts that would be of good quality and not be dependant on hex screws to hold down a connection like some other products available on Amazon. These are very good quality. Used them on my 2004 Acura TL. Fit great and they have great clamping force. Lots of room to add accesories, and you dont have to disconnect the main to access any accessory wire you may be adding or removing. Nice that they come in different sizes for + and - as that is a common complaint with other products that theyre the both size, not the case with these they are proper size. The rubber covers are awesome too ! Very satisfied and would recommend

Product Summary: Fastronix Military Spec Battery Terminal Top Post Kit

From Fastronix Solutions

4.7 out of 5 stars, 1,241 ratings

Customer reviews

50+ bought in past month

About this Item

  • USA Made Battery Terminals and Covers!
  • (1) Positive and (1) Negative Lead Alloy Battery Terminals for Increased Strength and Reduced Corrosion
  • (4) 3/4"x 1-1/2" adhesive lined heatshrink (4) 2 gauge 3/8" copper lugs
  • (1) Red and (1) Black Military Spec Battery Terminal Covers
  • All in One Kit for Multiple Battery Installations (Battery Cable Not Included)

Product Description

Everything you need for a professional military spec battery terminal conversion. Great for multiple battery installations in race cars, off-road vehicles and RV's and anywhere battery performance is critical. Kit Includes both positive and negative specific Fastronix mil spec top post connectors, (4) 2 gauge 3/8" copper lugs, (4) 3/4"x 1-1/2" adhesive lined heat shrink for superior cable sealing and protection and a pair of Fastronix mil spec battery terminal covers to prevent accidental shorting and give your install a professional look. (Battery Cable Not Included). Note: Heat shrink requires use of a butane torch or heat gun in order to activate the adhesive lining and seal the connection. NOTE: Copper lugs that are included are for 2 gauge wire only, 2/0 gauge wire is a larger diameter and requires a different lug. 2 gauge copper lugs and heat shrink are not made in the USA.

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