10 Best Battery Powered Grease Gun 2025 in the United States

The DEWALT 20V MAX Grease Gun is designed for those who need a reliable, powerful tool for grease application, especially in automotive settings. One of its standout features is its impressive maximum pressure of 10,000 PSI, which allows it to tackle even the toughest clogged grease fittings with ease. Additionally, the high-volume pump can push out up to 5.0 oz/min, making it efficient for larger jobs. The 42-inch flexible hose is a great asset for reaching hard-to-access locations, while the variable speed trigger gives users precise control over grease flow, enhancing usability.

The built-in LED light is a thoughtful addition, helping to locate fittings in dimly lit areas. The grease gun also features an integrated no-mar foot design, allowing it to be rested on surfaces without damaging them, and an air-bleeder valve to simplify priming after cartridge changes.

There are a few drawbacks to consider. The tool is sold as a bare unit, meaning it does not come with a battery or charger, which could be an additional expense if you don’t already own DEWALT 20V batteries. While it weighs around 8 pounds, some users might find it a bit heavy during prolonged use, especially in tight spaces. Additionally, while the build quality is solid, it might not withstand drops or rough handling as well as some heavier-duty models.

The Milwaukee 2646-20 M18 2-Spd Grease Gun is a strong contender in the battery-powered grease gun category, especially for those who need a reliable tool for heavy-duty greasing tasks. Its standout feature is its impressive maximum pressure of 10,000 PSI, making it highly effective for delivering grease to tough fittings. This level of pressure is ideal for automotive and industrial applications where high performance is crucial.

One of the practical features is the 48-inch flexible hose, which allows users to easily access tight spaces. This flexibility is a big plus when working on machines or vehicles that have hard-to-reach grease fittings. The addition of an air bleeder valve makes priming quick, which is a time-saver in busy work environments. User convenience is enhanced by the lock-on/lock-off trigger, allowing for continuous operation without the need to hold down the trigger constantly. This can be particularly helpful during lengthy greasing sessions.

The new pre-set grease counter dial is another innovative aspect, enabling precise application and reducing waste. This can be particularly valuable for professionals who need to apply specific amounts of grease consistently. The Milwaukee grease gun doesn't come with batteries or a charger, which means you’ll need to invest in those separately if you don’t already own compatible Milwaukee batteries. Some users might find the weight of the tool a bit cumbersome during extended use, although the build quality and durability are generally praised, indicating it can handle tough working conditions.

The Milwaukee 2446-20 M12 12-Volt Cordless Grease Gun is a durable and easy-to-use tool designed for dispensing grease efficiently. With a 12V battery (sold separately), it can deliver over 8,000 PSI of pressure and dispense up to seven grease cartridges per charge, showcasing its impressive run-time.

The grease gun includes a 36-inch flexible hose with a spring guard, which enhances maneuverability and access to hard-to-reach areas. Integrated hose storage and an LED fuel gauge add to user convenience, while features like an air bleeder valve ensure quick and reliable priming.

Weighing 7.2 pounds and measuring 14 inches in length, it is relatively lightweight and ergonomically balanced, making it comfortable to handle during prolonged use. The tool is manufactured in China and built to last, backed by a 5-year warranty. However, be aware that the battery and charger are not included, which means additional purchases are necessary to operate the grease gun. This product is ideal for professional mechanics or heavy equipment operators who need a reliable and efficient grease delivery system, though the initial cost may be higher due to the need for separate battery and charger purchases.