10 Best Cordless Grease Guns 2026 in the United States

The Milwaukee 2646-20 M18 2-Speed Grease Gun is quite impressive for those looking to simplify grease application tasks. With its industry-leading maximum pressure of 10,000 PSI, this gun is capable of handling tough jobs, making it a solid choice for automotive and heavy machinery maintenance. The 48-inch flexible hose adds to its versatility, allowing users to reach those hard-to-access fittings with ease. Additionally, the air bleeder valve enhances efficiency by enabling quick priming, which can save time and frustration during operation.

User convenience is a notable strength here; the lock-on/lock-off trigger provides a better grip and control, reducing user fatigue during prolonged use. The pre-set grease counter dial is a unique feature that offers precision and helps users keep track of their grease application, which can be a game-changer for those who need accuracy in their work.

However, there are a few drawbacks to consider. The grease gun does not come with a battery included, which means you'll need to factor in the cost of purchasing one separately if you don’t already own compatible Milwaukee M18 batteries. This could be a stumbling block for beginners who might not be ready for additional expenses. The weight of 4.21 pounds is moderately manageable, but it could become cumbersome during extended use for some users, especially in tight spaces.

The DEWALT 20V MAX Cordless Grease Gun is a strong choice for anyone needing a reliable and powerful tool to handle grease fittings, especially in automotive or heavy machinery maintenance. Its motor delivers an impressive maximum pressure of 10,000 PSI, which helps clear clogged fittings effectively. The high-volume pump pushes grease at a good speed of up to 5 ounces per minute, supporting fast jobs. The 42-inch flexible hose is a big plus, letting you reach tight or awkward spots without hassle. A bright LED light near the nozzle makes it easier to see fittings in dim or dark areas, improving accuracy during use. The variable speed trigger gives you good control over grease flow, so you don’t waste grease or make a mess.

The included lithium-ion battery offers decent runtime and comes with a charger, but the tool weighs nearly 15 pounds, which might feel a bit heavy during extended use. It also has useful features like a pump filter screen to protect the mechanism from dirt, an air-bleeder valve for easy priming, and a no-mar foot design to rest the tool safely without damaging surfaces. The battery life is solid for most tasks, though very long or heavy-duty jobs may require spare batteries.

This grease gun balances power, convenience, and thoughtful design features, making it suitable for professionals and serious DIYers who want a cordless option that handles tough greasing jobs efficiently.

The Milwaukee Electric Tool 2646-21CT M18 Grease Gun Kit is a solid choice if you want a cordless grease gun that balances power and convenience. It runs on an 18-volt lithium-ion battery with a capacity of 1500 mAh, providing a good amount of work time before needing a recharge. Weighing 14 pounds, it’s on the heavier side, which might make it a bit tiring to handle for extended periods, but this weight also suggests a sturdy build.

The kit is designed to be easy to use, making it suitable for both DIYers and professionals who need reliable grease application without the hassle of cords. The product is made in China but comes with a 5-year warranty, which adds some peace of mind.

If you want a durable, easy-to-use cordless grease gun with a trusted brand behind it, the Milwaukee M18 is worth considering, especially if you value battery-powered freedom over lighter weight or extra hose length.