smilfuy

1 Pair Battery Post Shims Pure Lead Anode Cathode Sleeves Car Battery Terminal Converter Adapter Sleeves for Positive

$4.72$41.88

96+ bought in the past month

About this item

  • 【Practical Functions】: This car battery adapter socket is designed for connecting both positive and negative ends of the battery. It converts the battery's positive terminal to negative, ensuring a safe electrical connection for damaged or undersized batteries. It effectively addresses issues of battery post and terminal wear, and poor battery fit.
  • 【Reliable Material】: Crafted from high-quality pure lead, this car battery adapter socket is rust-resistant and corrosion-resistant. Lead, a soft metal with toughness and malleability, provides excellent conductivity, making it an ideal material for electrical systems.
  • 【Size Information】: The upper diameters of these car battery terminal adapter sleeves approximately 0.6 inches, while the lower diameters approximately 0.7 inches. Please ensure a proper fit before ordering. Compact and portable, they occupy minimal space for easy carrying and use.
  • 【Easy to Use】: The car battery post spacer is easy to handle, you may need to use a tool (such as tweezers) to properly adjust the diameter of the sleeve to better fit the top battery post before use, and then just install the sleeve into the top battery post. Save your time and energy and provide convenience.
  • 【Wide Application】: The automotive battery adapter covers are suitable for top post batteries or cables, side post batteries or cables, and are suitable for battery terminals in most cars, boats, small yachts, RVS, trucks, and other household devices.
$4.72
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Technical specifications
manufacturerSMILFUY
brandsmilfuy
modelCar Battery Post Shims
item_weight1.2 ounces
product_dimensions0.6 x 0.56 x 0.6 inches
item_model_numberCar Battery Post Shims
exteriorMachined
manufacturer_part_numberSMILFUY-SMFY-232
best_sellers_rank#5,991 in Automotive ( See Top 100 in Automotive ) #17 in Automotive Replacement Battery Terminals & Ends
date_first_availableJune 24, 2024

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Customer reviews

3.6267 ratings
  1. 550%
  2. 413%
  3. 30%
  4. 213%
  5. 125%

Customers say

Customers find the battery shims work well and are of good quality, with one mentioning they're perfect for tightening loose connections.

★★★★★

Perfect for Standard Car Battery Clamp Sizes

RussMarch 18, 2025✓ Verified purchase

These are perfect for standard top-post car batteries. But the clamp I needed it for is a strange, thin-walled clamp that wouldn't open far enough for the shim. Yet fully tightened it was moveable by hand. Standard clamps would be no issue. These are nicely made and will be a great solution for regular-sized clamps. I am keeping these - confident in their value and should myself or a friend need one. Read more

★☆☆☆☆

Doesn't fit Honda

Jay KuykendallAugust 16, 2025✓ Verified purchase

Amazon says this fits Honda. It doesn't. The outside diameter is too wide while the inner diameter is too narrow. This means that it couldn't slide over a standard car battery post, and because of the thickness, you can't widen it because then it won't fit the cables. Read more

★★★★★

Wrong circumference

red riverFebruary 26, 2026✓ Verified purchase

These shims are not the correct circumference for CAR battery posts. They were too tight. But they were thick enough to file down. This made them pliable to use them as they were designed. I used a small spud bar with a conical end, tapped the shim with a wooden mallet to keep its shape and it stretched out fine. For the $ and ten minutes of rethinking it worked out fine. Of course, It was way too much trouble. But lemons make lemonade. Read more

★★★★★

Works

ZarknessFebruary 19, 2026✓ Verified purchase

Works great Read more

★★☆☆☆

Lead shim was too thick.

CraigFebruary 25, 2026✓ Verified purchase

Shims were too thick/ large to accommodate existing neg battery post clamp. Had to purchase thinner shim from local auto parts store. Read more

★★★★☆

gets the job done

EsaelpJanuary 20, 2026✓ Verified purchase

It gets the job done, No longer loose connections Read more

★★★★★

Battery terminals spacer

ABFebruary 17, 2026✓ Verified purchase

Fit ok Read more

★☆☆☆☆

Useless junk way too small

OnlineShopper7January 11, 2026✓ Verified purchase

Ridiculous and completely useless. These “shims” are too small. Smaller than the battery terminal and too thick. As is being too thick, they won’t work under a battery clamp as it will take up too much space on maybe half a side of the terminal and make for poor contact and unable to secure the factory clamp without deforming it. Useless junk. Read more

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