10 Best Cordless Grease Gun 2025 in the United States

The DEWALT 20V MAX Grease Gun is a solid choice for anyone looking for a reliable cordless tool to handle lubrication tasks, especially in automotive or machinery settings. With a maximum pressure of 10,000 PSI, it can effectively power through clogged grease fittings, making it a strong performer for demanding tasks. Its high-flow pump pushes out up to 5.0 oz/min, catering well to high-volume applications, which is a significant advantage for users needing to dispense grease quickly.

The variable speed trigger allows for better control over the grease flow, which can help prevent wastage and enhance precision. Additionally, the 42-inch flexible hose is a standout feature, enabling users to reach tight spots and difficult angles, which is often a challenge with traditional grease guns. The built-in LED light is a thoughtful addition, helping to illuminate dark work areas, ensuring that you can locate even the most hard-to-see grease fittings.

However, there are some aspects to consider. The tool is sold as a bare unit, meaning it does not come with batteries included, which could be an issue if you do not already own compatible DEWALT batteries. Weighing in at 8 pounds, it may be slightly heavy for prolonged use, particularly in overhead applications.

The Milwaukee 2646-20 M18 2-Spd Grease Gun is designed for automotive enthusiasts and professionals who require a reliable and powerful tool for grease application. With an impressive maximum pressure of 10,000 PSI, it easily handles a variety of tasks, ensuring efficient lubrication even in challenging conditions. The 48-inch flexible hose is a standout feature, allowing users to access hard-to-reach fittings without hassle. Additionally, the air bleeder valve enables quick priming, which is particularly useful when starting a new grease cartridge. The lock-on and lock-off trigger enhances user convenience, making it easier to operate for extended periods.

This grease gun is a bare tool, meaning it does not come with a battery or charger, which could be a drawback for users who do not already own Milwaukee’s M18 battery system. Although it has a reasonable weight of 4.21 pounds, it might still feel cumbersome for prolonged use compared to some lighter models on the market. Moreover, while the grease counter dial is innovative for tracking grease usage, it may take some time for new users to get accustomed to the precision it offers.

The Milwaukee 2646-20 M18 is a sturdy and efficient grease gun that excels in performance and accessibility, making it suitable for those who regularly handle equipment maintenance. Potential buyers should consider their existing battery compatibility and whether they prefer a lighter option for extended use.

The LockNLube Grease Gun Coupler is an innovative tool designed to enhance the greasing experience by securely locking onto Zerk fittings, making it easier to apply grease without making a mess. One of its standout strengths is its patented locking mechanism, which allows users to work with both hands free, eliminating the need to hold the coupler in place. This feature is particularly beneficial for those who find traditional methods cumbersome or messy. Additionally, its impressive maximum pressure rating of 10,000 PSI ensures compatibility with a variety of grease guns, whether they are manual, pneumatic, or battery-operated.

Another notable benefit is its rebuildable design. The inclusion of a spare rebuild kit means longevity and cost-effectiveness, making it a durable option for frequent users. Furthermore, it’s versatile, working with both SAE and metric Zerk fittings, which enhances its usability across different types of machinery.

However, there are a few considerations to keep in mind. Some users might find the learning curve associated with using the thumb lever a bit challenging at first, especially if they are accustomed to traditional grease guns. Also, since the coupler is an attachment rather than a standalone grease gun, it requires a compatible grease gun to function, which might not appeal to those looking for a complete solution in one package.