10 Best Cordless Grease Gun 2026 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 TaskStar Battery Powered Grease Gun is a solid choice for farmers, mechanics, and truckers needing a reliable cordless solution for greasing heavy equipment. It delivers a high maximum pressure of up to 10,000 PSI and a good flow rate of 3.0 oz per minute, which helps grease tough machinery quickly and consistently. Its 21V batteries (two included, each with 2000mAh capacity) offer enough runtime to handle about 10 grease cartridges per charge, plus you can swap batteries for continuous work—handy if you're out in remote areas. The 39.4-inch flexible hose with an LED light is a thoughtful addition, making it easier to reach tight, dark spots on tractors or trailers.

The grease gun weighs just over 6 pounds, which is manageable but might feel a bit heavy during extended use. It also supports both cartridge and bulk grease loading, giving flexibility depending on your preference. The kit comes fully equipped with useful accessories like a charger, extra nozzle, extension pipe, and even gloves, so you can start working right away.

Although the battery voltage is decent, the weight and size might be a consideration if you need something ultra-light or compact for very frequent handheld use. The TaskStar’s powerful motor, variable speed control, and ergonomic design contribute to a user-friendly tool that can save time and reduce fatigue compared to manual grease guns.