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 Ryobi 18V Cordless Grease Gun P3410 is quite an efficient tool for those looking to streamline their lubrication tasks. With a battery voltage of 18V, it offers sufficient power to handle a wide range of greasing jobs. A standout feature is its impressive maximum pressure of 10,000 PSI combined with a flow rate of 7.5 oz. per minute, making it a strong contender for those requiring high efficiency and power. The grease gun is equipped with a 30-inch flexible hose, which is particularly helpful for reaching difficult fittings, increasing its practicality for use in tight spaces.

Durability is another plus, thanks to the steel grease tube that promises long-term use. The on-board LED work light is a thoughtful addition, providing much-needed illumination in dimly lit environments. However, potential users should note that the product is sold as 'tool-only,' which means that the battery and charger need to be purchased separately if not already owned.

Weighing in at 8.15 pounds, the device is relatively lightweight, though it might still be on the heavier side for prolonged use. Its build combines plastic and metal, which strikes a good balance between sturdiness and weight. Customer feedback is overwhelmingly positive, reflected in a strong 4.7 out of 5 stars from over a thousand reviews, indicating high user satisfaction.

This grease gun seems best suited for automotive enthusiasts or professionals who need a reliable tool for regular use and can manage the additional cost of batteries and chargers. Its robust features and solid construction make it a valuable addition to any toolkit, provided the buyer is aware of the extra components required.