10 Best Cordless Grease Guns 2025 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 Grease Gun is a powerful cordless tool designed for heavy-duty grease applications. It boasts a motor that can deliver up to 10,000 PSI, making it capable of handling clogged grease fittings with ease. The high-volume pump can push up to 5.0 oz/min, which is ideal for high-flow applications. With a 42-inch flexible hose, this grease gun can easily reach hard-to-access areas, and the integrated bright LED light helps to locate grease fittings in dark work environments.

The variable speed trigger allows for precise control over the grease flow, which is a handy feature for different tasks. It also includes an air-bleeder valve that assists in pump priming after cartridge changes, ensuring smooth operation. The grease gun has a no-mar foot design that allows it to rest on flat surfaces without causing any damage. However, it is important to note that this model does not include batteries, so you will need to purchase them separately. At 8 pounds, it is relatively heavy, which might be a drawback for prolonged use.

Additionally, it comes with a 3-year limited warranty, 1-year free service contract, and a 90-day money-back guarantee, providing peace of mind. The DEWALT 20V MAX Grease Gun is a reliable and robust option for those looking for a high-performance cordless grease gun, particularly in automotive and industrial settings.

The GEVEELIFE Electric Grease Gun (2025 Upgraded model) is a strong contender for anyone needing a cordless grease gun capable of handling tough, heavy-duty jobs. It offers an impressive 12,000 PSI maximum pressure and a grease output of 5.3 ounces per minute, which is about three times faster than manual guns, making it ideal for farm equipment, trucks, or construction machinery. Its two 4000mAh batteries support long work sessions, reportedly greasing over a dozen tractors per charge, and the option to swap batteries helps reduce downtime.

The 39.4-inch flexible hose combined with a 90° swivel coupler makes reaching tight or awkward spots easier, while the built-in LED light improves visibility in dim conditions. Weighing just over 12 pounds, it is a bit on the heavier side compared to some handheld models, so the adjustable shoulder strap is a helpful feature for extended use. The gun also works with both bulk grease and standard cartridges, adding versatility. The aluminum motor housing and IP54 rating suggest good durability against dust and splashes.

A potential drawback is its weight if a lighter, more portable option is needed for quick or occasional tasks. Additionally, while the high pressure and fast grease flow are excellent for large equipment, they might be more power than necessary for small vehicles or home use. For those who regularly maintain heavy machinery and value battery life, power, and flexibility, this grease gun is a highly suitable choice.