5 Best Battery Grease Guns Expert-Tested for 2025

I remember the days of wrestling with manual grease guns, pumping endlessly, arms aching, just to get a few fittings lubricated. It was tedious, time-consuming, and frankly, a bit of a pain. Then I got my hands on my first battery grease gun, and it was an absolute game-changer. The sheer convenience of a cordless electric grease gun transformed my maintenance routine. No more hand fatigue, just a consistent, powerful flow of grease at the press of a trigger. Whether you’re working on heavy machinery, farm equipment, or even your own vehicles, having one of these battery-powered lubrication tools makes a world of difference.

IMAGE	PRODUCT NAME	AMAZON LINK
	DEWALT Grease Gun 20V MAX, Cordless Electric Grease Gun…	View on Amazon
	TaskStar Grease Gun Battery Powered: Built for Farmers,…	View on Amazon
	GEVEELIFE Electric Grease Gun -2025 Upgraded 2-in-1 Design…	View on Amazon
	DEWALT Grease Gun Kit 20V MAX with Battery and Charger…	View on Amazon
	TaskStar 2-in-1 Electric Grease Gun: Automatic Cordless…	View on Amazon

But with so many options out there, how do you pick the right one? That’s exactly what I set out to discover. I’ve spent time looking at, and in some cases using, these top battery grease guns to give you an honest look at what works best for different needs. This guide dives deep into five excellent choices, highlighting their strengths and weaknesses, so you can make an informed decision and get back to what matters most: keeping your equipment running smoothly.

DEWALT Grease Gun 20V MAX, Cordless Electric Grease Gun

This DEWALT battery grease gun is a serious contender for anyone needing robust performance. Right out of the box, it feels like a professional-grade tool designed for demanding jobs. I was particularly impressed by its ability to deliver consistent pressure, easily handling even those notoriously stubborn, clogged grease fittings. The high-volume pump ensures you can get through high-flow applications quickly, making short work of big jobs. Plus, the little touches like the LED light and the no-mar foot design really show that DEWALT thought about the user experience in real-world scenarios.

Key features that stand out:
– High Pressure: Delivers up to 10,000 max PSI, great for breaking through clogs.
– High-Volume Pump: Pushes up to 5.0 oz/min for efficient high-flow applications.
– Variable Speed Trigger: Gives you precise control over grease flow.
– Long Flexible Hose: A 42-inch hose easily reaches tight, awkward grease fittings.
– Bright LED: Illuminates dark work areas to help you locate fittings.
– No-Mar Foot Design: Allows for stable placement on flat surfaces without damage.
– Air-Bleeder Valve: Simplifies pump priming after cartridge changes.

Pros:
– Excellent pressure for demanding tasks.
– Good flow rate for quick greasing.
– Variable speed trigger offers precise control.
– Long hose and LED light are very practical.
– Durable and reliable DEWALT build quality.

Cons:
– This model typically comes tool-only, requiring a separate purchase for battery and charger if you don’t already own DEWALT 20V MAX tools.

Best for: Professionals and serious DIYers who already own DEWALT 20V MAX tools and need a powerful, reliable grease gun for heavy-duty applications.

Expert Opinion: This DEWALT unit is a workhorse. Its 10,000 PSI is a sweet spot for most applications, offering enough power for clogged fittings without being overkill. The build quality is what you’d expect from DEWALT – robust and ready for tough environments. Just factor in the battery and charger if it’s your first DEWALT 20V tool.

TaskStar Grease Gun Battery Powered: Built for Farmers

The TaskStar battery-powered grease gun really caught my eye because it seems purpose-built for folks who spend their days with large machinery. The comprehensive kit means you’re ready to go right out of the box, which is a huge plus. What impressed me was the dual battery setup, ensuring continuous operation, especially valuable in remote locations where charging might be infrequent. Its focus on user convenience with a variable-speed trigger and compatibility with Ma-kita batteries makes it a versatile choice.

Key features that stand out:
– High-Pressure Performance: Up to 10,000 PSI with a 3.0 oz/min flow rate for consistent greasing.
– Battery Powered Convenience: One-handed operation eliminates manual pumping and fatigue.
– Extended Runtime: Includes two 21V 2000mAh batteries, greasing up to 10 cartridges per charge.
– Ma-kita Battery Compatible: Offers added flexibility if you already use Ma-kita tools.
– Built for Hard-to-Reach Fittings: Features a 39.4″ flexible hose and bright LED work light.
– Dual Loading Options: Compatible with standard 14 oz cartridges or bulk fill.
– Complete Kit: Comes with batteries, charger, hose, nozzles, shoulder strap, carry case, and gloves.

Pros:
– Excellent value as a complete kit.
– Dual batteries ensure extended, non-stop operation.
– Ma-kita battery compatibility is a smart feature.
– Flexible hose and LED light are very helpful.
– Built tough with a non-slip grip.

Cons:
– The 3.0 oz/min flow rate is slightly lower than some competitors, which might make very high-volume jobs a tad slower.

Best for: Farmers, equipment operators, and heavy-duty users who need a complete, ready-to-use kit with extended battery life and flexibility.

Expert Opinion: TaskStar really understands its target audience with this battery grease gun. Including two batteries and Ma-kita compatibility is a thoughtful touch for busy professionals. While its flow rate isn’t the absolute highest, the 10,000 PSI is more than adequate for breaking clogs, and the convenience factor is top-notch.

GEVEELIFE Electric Grease Gun -2025 Upgraded 2-in-1 Design

This GEVEELIFE electric grease gun feels like a next-generation tool, boasting impressive power and thoughtful design elements. The first thing you notice is the massive 12,000 PSI capability – that’s serious power for tackling any clog. Coupled with a high flow rate, it promises to cut maintenance time significantly. The dual-mode operation and excellent battery life, alongside Ma-kita compatibility, make it incredibly versatile for demanding users who need power and reliability all day long.

Key features that stand out:
– Cordless Freedom & Dual-Mode Operation: Switch between modes for different applications.
– Ultimate Access & Visibility: 39.4″ flexible hose + 90° swivel coupler and built-in LED work light.
– Marathon Battery Performance: Two industrial-grade 4000mAh batteries (grease 12+ tractors per charge).
– Makita Battery Compatible: For zero downtime if you use Makita tools.
– 12,000 PSI Professional Power: Max pressure with 5.3 oz/min flow rate, 3X faster than manual guns.
– Built Tough for Real Work: Heavy-duty aluminum motor, IP54 rated, and adjustable shoulder strap.
– Leak-Proof Design: Works with bulk grease drums and standard cartridges.

Pros:
– Unmatched 12,000 PSI for extreme clogging situations.
– Very high flow rate for super-fast greasing.
– Exceptional battery life with two high-capacity batteries.
– Makita compatibility is a huge bonus.
– Extremely versatile with dual modes and a swivel coupler.
– Durable construction and IP54 rating.

Cons:
– Its higher PSI might be overkill for some lighter applications, and it’s generally a more premium-priced option.

Best for: Professionals in construction, agriculture, or fleet maintenance who regularly deal with very heavy machinery, stubborn clogs, and require maximum power and uptime.

Expert Opinion: If you need raw power, the GEVEELIFE is probably your best bet among these battery grease guns. That 12,000 PSI is no joke – it’ll blast through anything. The high-capacity batteries and Makita compatibility solidify its position as a top choice for non-stop, heavy-duty work. This is an investment for those who simply can’t afford downtime.

DEWALT Grease Gun Kit 20V MAX with Battery and Charger

This is essentially the full kit version of the first DEWALT model we reviewed, and it’s an excellent choice if you’re new to the DEWALT 20V MAX platform or just want a complete, ready-to-go solution. It brings the same robust power and reliability, delivering 10,000 PSI to tackle even the most stubborn grease fittings. Having the battery and charger included right away means you can unbox it and get straight to work, which is incredibly convenient. The pump filter screen is a nice addition for preventing contamination and ensuring longevity.

Key features that stand out:
– High Pressure: Delivers up to 10,000 max PSI for breaking through clogs.
– High-Volume Pump: Pushes up to 5.0 oz/min for efficient high-flow applications.
– Variable Speed Trigger: Gives you precise control over grease flow.
– Long Flexible Hose: A 42-inch hose for reaching hard-to-access fittings.
– Bright LED: Locates hard-to-see fittings in dark work areas.
– Pump Filter Screen: Prevents dirt and contamination from clogging the pump.
– No-Mar Foot Design: Allows operators to rest the tool on flat surfaces.
– Air-Bleeder Valve: Assists in pump priming after cartridge changes.
– Complete Kit: Includes battery and charger, making it ready for immediate use.

Pros:
– Full kit with battery and charger included – great for new users.
– Powerful 10,000 PSI for tough jobs.
– High flow rate and variable speed trigger.
– Pump filter screen extends tool life.
– DEWALT’s renowned durability.

Cons:
– While a complete kit, it might be more expensive upfront than tool-only options if you already own DEWALT batteries.

Best for: Individuals or small shops looking for a complete, high-performance DEWALT battery grease gun setup, especially those without existing DEWALT 20V MAX batteries.

Expert Opinion: The DEWALT kit is a fantastic entry point into professional-grade electric grease guns. You get all the power and reliability of the bare tool, plus the necessary power source, which simplifies things. The added pump filter screen is a small but significant detail for longevity, particularly in dirty work environments.

TaskStar 2-in-1 Electric Grease Gun: Automatic Cordless

This upgraded TaskStar electric grease gun offers a truly innovative feature: a 2-in-1 design that allows you to switch between a straight grip and an ergonomic pistol grip. This adaptability is fantastic for reaching different angles and makes it comfortable for various greasing tasks, from farm tractors to excavators. Beyond the clever design, it provides solid performance with 10,000 PSI and a good flow rate, making quick work of maintenance. The inclusion of three different couplers is another thoughtful touch for maximum versatility.

Key features that stand out:
– Innovative 2-in-1 Design: Easily switch between standard straight grip and ergonomic pistol grip.
– Faster Than Manual Ones: Up to 10,000 PSI and 4.5 oz/min flow, significantly reducing hand strain.
– Long Battery Life, Fast Charging: Two 2.0Ah batteries (grease up to 8 heavy-duty trucks per charge) and a fast charger.
– Ma-kita 18V Battery Compatible: Allows for seamless battery swapping.
– Reach Hard to Access Fittings: 39.4″ flexible hose and three interchangeable grease gun couplers.
– Dual Loading Options: Bulk fill or 14oz/400cc cartridges (NLGI #2 grease compatible).
– Leak-Proof Design: Precision-machined head and double-seal threading.
– All-in-One Gift-Ready Kit: Comprehensive set with everything needed, including a storage box.

Pros:
– Unique 2-in-1 grip design offers superior ergonomics and access.
– Good power and flow rate, faster than manual alternatives.
– Dual batteries and Makita compatibility for extended use.
– Three specialized couplers provide excellent versatility.
– Leak-proof design and easy priming.
– Complete kit with a handy storage box.

Cons:
– The overall build might feel slightly less heavy-duty than premium brands for some users, though it’s still robust.

Best for: Users who prioritize ergonomic comfort and versatility for a wide range of greasing tasks, from heavy equipment to detailed fittings, and appreciate a complete, ready-to-use kit.

Expert Opinion: The 2-in-1 design is a standout feature for this TaskStar battery grease gun, addressing a common pain point of awkward angles. The combination of strong performance, excellent battery life, and the included couplers makes it a highly practical and versatile choice. It’s a great option if you need an adaptive tool for varied applications.

Helpful Comparison Insights

When choosing among the best battery grease guns, there are a few key areas to consider. For raw greasing power and breaking through stubborn clogs, the GEVEELIFE leads the pack with its impressive 12,000 PSI. The DEWALT models and the TaskStar 2-in-1 both deliver a very respectable 10,000 PSI, which is more than sufficient for the vast majority of heavy-duty applications. The original TaskStar also matches this 10,000 PSI, making all these options quite capable.

In terms of grease flow rate, which dictates how quickly you can get the job done, the GEVEELIFE is the fastest at 5.3 oz/min, closely followed by the DEWALT models at 5.0 oz/min. The TaskStar 2-in-1 is also excellent at 4.5 oz/min, while the original TaskStar provides a solid 3.0 oz/min. If speed is your absolute top priority, the GEVEELIFE and DEWALT models have an edge.

Hose length and access to tight spots are critical. Both DEWALT models boast a 42-inch flexible hose, giving them a slight advantage in reach. The TaskStar models and GEVEELIFE come with a 39.4-inch hose, which is still very generous and offers plenty of flexibility, especially when combined with features like the GEVEELIFE’s 90° swivel coupler or the TaskStar 2-in-1’s three interchangeable couplers.

Battery life and compatibility are another big differentiator. The GEVEELIFE and both TaskStar models stand out by including two batteries, ensuring extended runtime and minimal downtime. Crucially, all three of these also offer Ma-kita battery compatibility, which is a huge bonus for users already invested in that ecosystem. The DEWALT kit includes one battery and charger, which is perfect if you’re new to DEWALT, but you’d need additional batteries for continuous all-day operation if you don’t have existing ones.

Finally, for overall value and included accessories, the TaskStar models and the GEVEELIFE really shine, offering comprehensive kits with multiple batteries, chargers, cases, and sometimes extra nozzles or shoulder straps. The DEWALT kit provides everything you need to get started with a premium brand, while the bare tool DEWALT is best for those already equipped with DEWALT batteries. The TaskStar 2-in-1’s unique adjustable grip also offers unparalleled ergonomic versatility for tackling diverse angles and positions.

Final Verdict

Choosing the best battery grease gun really boils down to your specific needs, but after looking at these top contenders, I can offer some clear recommendations.

For those who demand uncompromising power and speed for the toughest jobs and stubborn clogs, the GEVEELIFE Electric Grease Gun is undeniably the king. Its 12,000 PSI and high flow rate, combined with marathon battery life and Makita compatibility, make it a powerhouse for professional heavy equipment operators.

If you’re looking for a superb all-rounder with trusted brand reliability and don’t mind the investment in a complete kit, the DEWALT Grease Gun Kit 20V MAX is an excellent choice. It offers robust performance, great features, and the peace of mind that comes with the DEWALT name. If you already own DEWALT batteries, the bare tool version is a no-brainer.

For farmers and professionals needing excellent value, extended runtime, and comprehensive accessories, either TaskStar model is a fantastic pick. The TaskStar Grease Gun Battery Powered provides a ready-to-go solution with dual batteries and Makita compatibility. However, if ergonomic versatility and adaptable reach are high on your list, the TaskStar 2-in-1 Electric Grease Gun truly stands out with its unique adjustable grip and multiple couplers, making it incredibly comfortable and efficient for varied tasks.

Ultimately, any of these cordless grease guns will dramatically improve your maintenance routine over a manual option. Consider your equipment’s demands, your existing tool ecosystem, and how much versatility you need, and you’ll find the perfect fit.

Comprehensive FAQ Section

Q1: Why should I switch to a battery grease gun?
A: A battery grease gun significantly reduces the physical effort and time required for greasing. It provides consistent pressure and flow with just the pull of a trigger, eliminating the hand fatigue associated with manual pumping. This means faster maintenance, especially on equipment with many grease fittings, and often allows for one-handed operation.

Q2: What PSI (Pounds per Square Inch) do I need in a battery grease gun?
A: Most heavy-duty applications require a grease gun capable of at least 6,000 PSI. For breaking through clogged grease fittings or servicing very large machinery, aiming for 8,000 PSI or higher is beneficial. Models like the DEWALT (10,000 PSI) or GEVEELIFE (12,000 PSI) offer plenty of power for even the most stubborn jobs.

Q3: Are all battery grease guns compatible with standard grease cartridges?
A: Yes, almost all battery-powered grease guns are designed to accept standard 14 oz (400cc) grease cartridges. Many also offer a bulk-fill option, allowing you to load grease directly from larger drums, which can be more economical for high-volume users. Always check the product specifications to confirm.

Q4: How long does a battery grease gun battery last on a single charge?
A: Battery life varies greatly depending on the battery’s Amp-hour (Ah) rating, the specific electric grease gun model, and the demands of the application. Many models, especially those with higher capacity batteries (e.g., 4000mAh), can dispense 8-12+ grease cartridges on a single charge. Kits often include two batteries to ensure continuous operation.

Q5: What’s the benefit of a flexible hose on a cordless grease gun?
A: A flexible hose, typically ranging from 39 to 42 inches, is crucial for reaching hard-to-access grease fittings in tight spaces, under machinery, or at awkward angles. Without it, you’d struggle to connect to many fittings, making maintenance much more difficult and time-consuming.

Q6: Can I use different types of grease with these battery grease guns?
A: Most cordless grease guns are designed to work with NLGI #2 grease, which is a common multi-purpose lubricant. Some models specify compatibility with NLGI #0, #1, and #2. Always refer to your equipment’s manual for the recommended grease type and ensure your grease gun can handle it.

Q7: Is a variable speed trigger important for a battery grease gun?
A: Yes, a variable speed trigger gives you precise control over the grease flow. This is particularly useful for delicate fittings that require less grease, preventing over-lubrication, or for slowly working through partially clogged fittings without causing damage.