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 is a strong choice for anyone needing a cordless, easy-to-use tool for greasing machinery. It delivers high pressure up to 10,000 PSI, powered by two 21V 2.0 Ah batteries that provide enough juice to grease about 10 tubes before needing a recharge. Having two batteries included means you can keep working without interruptions, and it even works with Makita batteries, which adds flexibility. The pump flows grease at a steady rate of 3.0 ounces per minute, which helps speed up maintenance jobs.

The 39.4-inch flexible hose is long enough to reach tricky spots, and the built-in LED light is a handy feature for working in darker areas. At around 10.76 pounds, it’s not the lightest grease gun, but the cordless, one-handed design reduces user fatigue compared to manual models. The build includes cold-drawn steel tubing and a non-slip rubber sleeve, suggesting a focus on durability. It supports both bulk and cartridge grease loading, which is convenient depending on your grease supply.

The weight may be a bit much for extended use, especially if you’re holding it up high or in tight spaces. Also, while the kit is comprehensive—including batteries, charger, carrying case, and gloves—the product comes from China, which some users consider when thinking about long-term reliability or support. Customer reviews are very positive, with a 4.7-star rating, indicating user satisfaction. This grease gun suits equipment owners or professionals who want a reliable, battery-powered tool that saves time and effort. Its strong motor, good battery life, and thoughtful features like the LED light and flexible hose make it a practical option, especially if you regularly maintain different machines and need portability.