10 Best Battery Powered Grease Gun 2025 in the United States

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 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 TaskStar Electric Grease Gun Kit is a solid choice for farmers, equipment operators, and homeowners looking for a cordless and efficient greasing tool. It runs on two 4000mAh lithium-ion batteries, providing good battery life that can handle multiple machines without frequent recharging. With a powerful maximum pressure of 12,000 PSI and a flow rate of 5.3 ounces per minute, it can tackle both routine and heavy-duty greasing tasks comfortably. The 39.4-inch flexible hose and 90-degree coupler adapter make it easier to reach tight or awkward spots, and the built-in LED light helps when working in dim areas.

Weighing about 12.65 pounds, it includes a shoulder strap to reduce fatigue during long jobs, though the weight might still feel a bit heavy for some users. The grease gun supports both bulk and standard 14 oz grease cartridges, adding convenience and flexibility for different greasing needs. Its build is sturdy enough for tough environments, and the kit comes with a comprehensive set of accessories to get started right away.

One downside is that the unit’s weight could be cumbersome for extended use, and while it’s compatible with Makita batteries, relying on specific brands might limit battery replacements for some. The three-year technical support is a reassuring bonus, making this a dependable tool for both professionals and serious DIYers.