10 Best Cordless Grease Guns 2025 in the United States

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 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 Milwaukee 2446-20 M12 Cordless Grease Gun is a solid choice for those needing a reliable tool for lubrication tasks. With a 12V battery that can dispense up to 7 grease cartridges per charge, it boasts impressive battery life and efficiency. The maximum pressure of over 8,000 PSI allows it to tackle heavy-duty jobs, making it suitable for both automotive and industrial applications. Weighing in at 7.2 lbs and measuring 14 inches in length, it offers a good balance of power and portability, which is essential for prolonged use.

Ease of use is one of the standout features, highlighted by its integrated hose storage, LED fuel gauge, and a priming mechanism that facilitates quick flow through the air bleeder valve. These elements help minimize downtime, allowing users to focus on their tasks. The included 36-inch flex hose offers extended reach, which adds to the convenience.

Some drawbacks to consider include that this model is sold as a bare tool, meaning users must purchase the battery and charger separately, which could increase the overall cost. While the unit is durable and backed by a 5-year warranty, some users might find the weight a bit cumbersome over extended periods of use, especially if they require frequent mobility. Additionally, being manufactured in China may raise quality concerns for some buyers, though Milwaukee is known for maintaining high standards in their products.