Car Battery Terminal Post Shim Adapter Converters – 2 Pairs

Car Battery Terminal Post Adapter Shim Converters – 2 Pairs

Keep your vehicle's electrical connections secure and reliable with these metal battery terminal post shim converters. Whether your positive terminal needs to fit a negative post, or a worn battery post is causing a loose connection, these adapters provide a simple, no-fuss fix that restores a firm, stable fit without replacing the entire terminal.

Made from durable metal construction, these converters are built to handle the demands of everyday automotive use. The precision-tapered design ensures a snug fit on both positive and negative battery posts, eliminating unwanted movement that can cause electrical issues or starting problems.

Key Features

• Converts Positive to Negative: Allows a positive battery terminal to fit securely onto a negative battery post.
• Fixes Loose Connections: Ideal for worn or undersized battery posts where the terminal no longer grips tightly.
• Durable Metal Construction: Built for long-lasting performance under hood conditions.
• Universal Fit: Tapered design accommodates standard automotive battery post sizes.
• Value Pack: Includes 2 pairs (4 adapters total) so you have spares on hand.

Specifications

• Material: Metal
• Height: 16 mm / 0.63"
• Positive Outer Diameter: 19 mm × 17 mm (Max. × Min.)
• Positive Inner Diameter: 14 mm × 12.5 mm (Max. × Min.)
• Negative Outer Diameter: 17 mm × 15 mm (Max. × Min.)
• Negative Inner Diameter: 12 mm × 10.5 mm (Max. × Min.)

Package Contents

• 2 Pairs (4 pieces) × Battery Terminal Post Shim Adapters

Made in Mainland China.

For more guidance on safe automotive electrical maintenance, visit the U.S. Consumer Product Safety Commission (CPSC) for general consumer safety information.

Related Products You May Like

• "1% Better Every Day" Motivational Canvas Wall Art Print
• "Everything Is Fine" Funny Men's Graphic T-Shirt

Learn more: MagSafe (wireless charger)

Frequently Asked Questions

Q: What do battery terminal post shim converters do?

A: Battery terminal post shim converters, also known as post adapters, are metal sleeves that slide over a battery post to adjust its size. They are commonly used when a positive terminal needs to fit a negative post (which is slightly smaller), or when a worn post no longer holds the terminal clamp tightly. These shims restore a secure, vibration-free connection without the need to purchase new terminals or a new battery.

Q: Will these adapters fit my car battery?

A: These converters are designed to fit standard automotive battery post sizes. The positive post shim has an outer diameter of 19 mm × 17 mm and an inner diameter of 14 mm × 12.5 mm, while the negative shim has an outer diameter of 17 mm × 15 mm and an inner diameter of 12 mm × 10.5 mm. These dimensions cover the vast majority of standard 12V car, truck, and SUV batteries. If you are unsure, measure your battery post diameter before ordering.

Q: How many adapters are included in the pack?

A: This listing includes 2 pairs (4 individual shim adapters) so you have enough to cover both battery terminals and keep a spare set on hand for future use.

Q: Are these adapters easy to install?

A: Yes. Simply slide the appropriate shim adapter over the battery post before attaching your terminal clamp. No special tools are required. Always disconnect the negative terminal first when working on your vehicle's battery for safe installation.