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 Ryobi 18V Volt Cordless Grease Gun P3410 is an impressive tool for anyone needing to efficiently lubricate machinery or vehicles. With a robust maximum pressure of 10,000 PSI and a grease output of 7.5 ounces per minute, it showcases strong performance that can handle a variety of tasks. The 30-inch flexible hose allows for easy access to tight spots, making it user-friendly for mechanics and DIY enthusiasts alike. One noteworthy feature is the on-board LED work light, which helps brighten dark areas, so you won't miss a grease fitting even in dim light.

On the downside, this tool does not come with a battery, which means you'll need to invest in a compatible Ryobi battery separately if you don't already own one. Weighing in at 8.13 pounds, it may feel a bit heavy for prolonged use, especially for those not accustomed to handling power tools. Additionally, while the steel grease tube ensures durability, the plastic and metal construction might not be as rugged as some higher-end models.

This grease gun is a great fit for both professional mechanics and home users who require a reliable tool for regular maintenance. Its performance and ease of use make it suitable for those who need quick access to grease fittings without the hassle of manual pumping. However, individuals seeking a lightweight option or those who are new to grease guns may want to consider their comfort and how frequently they plan to use it. The Ryobi P3410 stands out for efficiency and convenience, but potential buyers should factor in the weight and the need to purchase a battery separately.