Battery Terminal Cleaning & Repair Kit - Shims, Brushes & Washers

In this review of the Battery Terminal Cleaning & Repair Kit the bottom line is simple: this kit is aimed at DIY vehicle owners who need a low-cost way to restore reliable electrical connections on standard top post batteries. The reviewer found the combination of five lead shims, two stainless steel brushes and a dozen fiber washers makes it easy to clean corrosion and rebuild slightly worn or undersized posts, and the single biggest reason to buy is the kit's practical focus on repair and corrosion prevention rather than replacement parts.

Key Features

• Shims for repair: Five same-size lead shims restore a secure fit on worn or undersized top post batteries so terminals clamp tightly and maintain conductivity.
• Trim-to-fit design: Each shim is about 0.5 mm thick and flexible, allowing the user to trim shims to exactly match a 19 mm cone/taper positive post for a snug repair.
• Cleaning brushes: Two stainless steel brushes remove dirt, corrosion and buildup from battery posts and cable ends to improve electrical contact.
• Fiber washers: Twelve anti-corrosion fiber washers (six red and six black) sit under terminals to slow future corrosion and help prolong battery life.
• Vehicle compatibility: The kit is suitable for cars, trucks, RVs and boats that use standard top post batteries with 19 mm positive and 17 mm negative posts.

Who It's For

This kit suits owners who maintain their own vehicles, RVs or boats and want a compact, inexpensive way to clean terminals and repair minor post wear without replacing the entire battery or terminal clamps. It is practical for roadside fixes, home garages and anyone who prefers DIY maintenance to shop service.

It is less appropriate for batteries with heavily damaged or non-standard posts, or for users who need an exact factory replacement terminal or professional-grade corrosion inhibitors; those users should seek dedicated replacement terminals or professional servicing instead.

Pros & Cons

Pros

• Good value bundle that combines cleaning and repair items for immediate terminal restoration.
• The lead shims are flexible and trimmable, making them adaptable to slightly varied post sizes.
• Stainless steel brushes clean effectively and fiber washers provide a simple corrosion barrier to prolong life.

Cons

• All five shims are the same size, so multiple trims may be needed for a precise fit on some posts.
• Some customers report mixed results on long-term corrosion prevention depending on condition and installation.

Specifications

Our Verdict

The kit is a sensible, economical choice for DIYers who need to clean corrosion and rebuild slightly undersized top post battery connections without swapping parts. It combines cleaning brushes, trimmable lead shims and fiber washers to restore contact and slow future corrosion, offering solid value for routine maintenance while not replacing the need for full terminal replacement in severely damaged cases.

Frequently Asked Questions

Can these shims fit my battery posts?
The shims are designed to cover a 19 mm cone/taper positive top post and can be trimmed to fit; they work best on slightly worn or undersized standard posts.

Do the fiber washers prevent corrosion completely?
Fiber washers help reduce corrosion around terminals but results vary with environment and installation, so they slow but do not guarantee prevention.

Are the brushes safe on battery posts?
The stainless steel brushes are intended to remove corrosion and buildup; use moderate pressure and proper safety precautions to avoid damaging posts or nearby components.