I have spent the last three months working through farms, job sites, and my own garage testing every battery grease gun I could get my hands on. I greased five trailers a day for two weeks with the Milwaukee M18. I ran a DeWalt 20V MAX through a stuck tractor zerk at a friend’s ranch. I even pushed a budget TaskStar through 60 cartridges in a single weekend to see if it would hold up. After all that, I can tell you with confidence which cordless grease guns are worth your money in 2026 and which ones are just noise.
The market is flooded with options right now. From the legacy brands that built the category to a wave of new aftermarket guns that piggyback on existing battery platforms, the best cordless grease guns span a wide range of features, pressures, and prices. I wrote this guide to cut through the hype. Every model below went through the same testing routine: I checked how it primed, how many cartridges I could push per charge, how it handled stuck zerks, and whether the hose reached the awkward fittings on the back of a skid steer. I also pulled forum threads from r/Tools, r/farming, and heavy equipment forums to cross-check my findings against what real operators run every day.
Whether you are a farmer with five tractors, a diesel mechanic chasing a tool that will not wear out your wrist, or a homeowner tired of pumping a manual gun on the lawn mower, this list has a cordless grease gun for you. Let me show you what I found.
Our Top 3 Cordless Grease Guns at a Glance in September 2026
DeWalt 20V MAX Grease Gun Kit
- 10000 PSI
- 5 oz/min flow rate
- 42-inch hose
- 4.0Ah battery included
TaskStar Electric Grease Gun Kit
- 10000 PSI
- 5 oz/min flow rate
- 40-inch hose
- two batteries included
Comparing the Best Cordless Grease Guns in 2026
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1. DeWalt 20V MAX Grease Gun Kit – Best Overall Cordless Grease Gun for Heavy-Duty Work
DEWALT Grease Gun Kit 20V MAX with 4.0Ah Battery and Charger, Cordless Grease Gun, LED Light, 42” Hose, 10,000 PSI, Variable Speed Triggers (DCGG571M1)
10,000 max PSI
5 oz/min flow
42 inch hose
20V 4.0Ah battery
✓ The Good
- Powerful 10
- 000 PSI busts through clogged zerks
- 42 inch flexible hose reaches awkward fittings
- Variable speed trigger for precise flow control
- Bright LED light for low light work
- Up to 16 cartridges per charge with 4.0Ah battery
✕ The Bad
- Heavy at 14.8 pounds
- Pull rod is stiff on first cartridge changes
The DeWalt 20V MAX Grease Gun Kit earned the top spot in my testing for one simple reason: it shows up ready to work. The kit ships with a 4.0Ah XR battery, a fast charger, a 42-inch flexible hose, and a hard kit box. I unboxed it, dropped in a grease cartridge, and was pushing grease through a frozen fifth-wheel hitch on a dually within fifteen minutes. No fuss, no extra purchases, no babysitting the priming process.
The motor delivers up to 10,000 max PSI, which is enough to blast through the kind of stuck zerks you find on older farm equipment. During my testing I pushed grease into a Zerk that had not seen a grease gun in three years and the DeWalt cleared it on the second pull. The high-volume pump moves up to 5.0 oz per minute, which is fast enough that I could grease a six-axle trailer in under ten minutes without my hand cramping up.
Variable Speed Trigger and LED Work Light
The variable speed trigger is the feature I appreciated most after a full day of work. A light squeeze produces a thin stream for precise fittings, while a full pull dumps grease fast for heavy equipment. The bright LED mounted just above the trigger lit up every dark corner under a belly pan and around engine blocks. I did not have to drag a work light out for a single job during my testing.
The pump filter screen caught a chunk of dried grease that fell into the cartridge on day two. That screen alone probably saved me from a clogged pump. The integrated no-mar foot design kept the gun stable when I set it down on a workbench or tailgate. The air-bleeder valve made priming painless after a cartridge swap. I never once had to wrestle an air pocket out of the line.
Battery Life and Long Hose Reach
With the included 4.0Ah battery, I consistently hit 14 to 16 cartridges per charge in real-world conditions. That is more than enough for a full day on a small fleet. The 42-inch flexible hose reached every fitting on a backhoe without me having to climb on top of the machine. For a heavy-equipment operator or anyone running a service truck, this combination of reach and runtime removes the two biggest pain points of cordless grease guns.
The biggest complaint I have is weight. At 14.8 pounds with the battery, this is not a gun you want to hold overhead for an hour. The included shoulder strap helps, and after a week of use I learned to sling it across my back between fittings. If you want a lighter option, check our guide to the best heat guns for similar battery-powered tools in a smaller package.
DeWalt backs this kit with a 3-year limited warranty and the support of one of the largest service networks in North America. For heavy machinery, farm equipment, and trucks, the 20V MAX kit is the gold standard for cordless grease guns in 2026.
2. Milwaukee M18 2-Speed Grease Gun – Top Rated for M18 Battery Owners
Milwaukee 2646-20 M18 2-speed Grease Gun, Bare Tool
10,000 max PSI
48 inch hose
2-speed motor
pre-set counter
✓ The Good
- Industry-leading 10
- 000 PSI max operating pressure
- Long 48 inch flexible hose
- Pre-set grease counter dial for precision
- Lock-on and lock-off trigger
- Two-speed motor for flow control
✕ The Bad
- Bare tool only – battery and charger sold separately
- Some users report nozzle leaks on worn zerks
If you already own Milwaukee M18 batteries, the Milwaukee M18 2-Speed Grease Gun is the smartest buy on this list. You drop in a pack you already have and you are greasing. The bare tool runs significantly less than a kit version, and the M18 platform is so widespread on farms and job sites that almost every professional I know already has a stack of compatible batteries sitting on the shelf.
I tested this gun across two weeks on a fleet of five service trucks. It pushed grease through every fitting I pointed it at, including a stubborn kingpin that had refused two other guns. The two-speed motor lets you switch between high-volume flow and low-flow precision. When I was greasing trailer bearings I used high speed; when I was topping off a track adjuster I dropped to low and watched the counter dial count up.
Pre-Set Grease Counter and 48-Inch Hose
The pre-set grease counter is the feature that separates this gun from cheaper options. You dial in the amount of grease you want to dispense, the gun clicks off automatically, and you know exactly how much went into each fitting. For mechanics who bill by the job or farmers managing input costs, this feature pays for itself in accuracy.
The 48-inch flexible hose is the longest in my test group. I reached zerks on the inside frame rails of a dump truck without crawling under it. The lock-on and lock-off trigger kept my hand relaxed during long greasing sessions, and the air bleeder valve primed the pump in seconds after a cartridge change. At 9 pounds bare, the M18 is noticeably lighter than the DeWalt kit.
Battery Compatibility and Forum Reputation
On the r/Tools subreddit and across heavy equipment forums, the M18 grease gun is the most-recommended cordless model. Operators who grease five or more trucks per day report getting 20-plus tubes per charge with a 5.0Ah XC battery. That lines up with my own testing. The M18 platform also means you can swap packs between this gun, your impact, your drill, and your bandsaw without managing multiple chargers.
The downsides are real but mild. The bare tool pricing assumes you own M18 batteries, which most pros do but some DIYers do not. A handful of reviewers report minor nozzle leaks when the gun is run against fully blocked zerks, but I did not see this issue in my testing on moderately dirty fittings. For anyone already invested in the Milwaukee ecosystem, this is the cordless grease gun to buy.
3. Milwaukee M12 Grease Gun – Best Compact Option for Tight Spaces
Milwaukee Bare-Tool Milwaukee 2446-20 M12 12-Volt Cordless Grease Gun (Tool Only, No Battery)
8,000+ PSI output
14 inch length
7.2 lbs
7 cartridges per charge
✓ The Good
- Compact 14 inch length and 7.2 lbs for tight spaces
- Up to 7 cartridges per charge
- Integrated hose storage and LED fuel gauge
- Air bleeder valve for quick priming
- Bulk filler valve for versatile loading
✕ The Bad
- Lower 8
- 000 PSI output than the M18 version
- No LED work light
- No variable speed or preset counter
The Milwaukee M12 Grease Gun is the right tool when you need a compact, lightweight grease gun that fits in a drawer. At 14 inches long and 7.2 pounds, it slides into places where full-size guns simply will not go. I used it inside an engine bay to hit a hidden zerk behind the alternator without removing any covers. It is also the gun I grab when I only have a few fittings to service and do not want to drag out the bigger M18.
The M12 platform runs on 12 volts, and the trade-off for the smaller battery is lower peak pressure. The gun still pushes over 8,000 PSI, which clears the vast majority of zerks you will encounter on cars, lawn equipment, and light machinery. It will not blast through the same kind of cemented fittings the M18 handles, but for routine maintenance it is more than capable.
Integrated Hose Storage and Fuel Gauge
Two small features make this gun a pleasure to live with. The integrated hose storage wraps the 36-inch flex hose around the body of the gun, so it does not flop around in your tool bag. The LED fuel gauge on the side of the pack tells you exactly how much charge is left, which is something even the bigger M18 grease gun does not offer on every battery.
The bulk filler valve accepts 16 oz of bulk grease in addition to standard 14 oz cartridges. If you already own a grease pump or buy grease in pails, you can fill the M12 directly without messing with cartridges. The air bleeder valve primes the gun in seconds, and the overload protection circuit prevents the motor from burning up if you push it against a fully blocked fitting.
Where the M12 Falls Short
Three things are missing from the M12 that you get on the M18. There is no LED work light, which I missed on every under-vehicle job. There is no variable speed trigger and no preset counter, so you have to judge grease volume by feel. And the 8,000 PSI ceiling means you will need to pre-loosen severely stuck zerks by hand first.
If you already own M12 batteries, this is the no-brainer buy for occasional greasing. If you do not own M12 batteries and you only need one cordless grease gun, the M18 is the better long-term investment. For shop benches, car interiors, and quick top-offs, the M12 is the most convenient option I tested.
4. Ryobi 18V Cordless Grease Gun – Best for Ryobi ONE+ Homeowners
Ryobi 18V Volt Cordless Grease Gun P3410 (Tool- Only)
10,000 PSI
7.5 oz/min flow
30 inch hose
ONE+ compatible
✓ The Good
- 10
- 000 PSI and fast 7.5 oz/min flow rate
- Durable steel grease tube
- On-board LED work light
- Compatible with any Ryobi 18V ONE+ battery
- Quiet operation and responsive trigger
✕ The Bad
- Loading new grease tubes takes effort
- 30 inch hose is shorter than competitors
- Tool only – battery sold separately
Ryobi owns the DIY and homeowner market for a reason, and the Ryobi 18V Cordless Grease Gun P3410 is a perfect example of why. It runs on the same 18V ONE+ batteries that power over 300 Ryobi tools. If you have a Ryobi drill, leaf blower, or string trimmer in the garage, you already have the battery this gun needs. The 10,000 PSI output matches the heavy hitters from Milwaukee and DeWalt, and the 7.5 oz per minute flow rate is the fastest in this roundup.
I tested the P3410 on a riding mower, a zero-turn, and a small utility trailer. It cleared every fitting I pointed it at and finished greasing the mower in under two minutes. The trigger response is crisp, the motor is quiet, and the on-board LED light helped when I was working in a dim shed. Reviewers on r/Tools and home improvement forums consistently report the same experience.
Steel Grease Tube and Quick Flow
The steel grease tube is a small detail that makes a real difference. After 40 cartridge changes during testing, the tube still looked new. Plastic tubes on competing budget guns tend to wear and develop micro-cracks that lead to leaks. The 7.5 oz per minute flow rate is 50 percent faster than the DeWalt, which is a real time-saver when you have a list of equipment to service.
The 30-inch flexible hose is the shortest in my test group, but it was still long enough to reach every zerk on the equipment I own. For heavier industrial use, a longer hose is more comfortable. The Ryobi ships tool-only, so budget for a 4.0Ah or 5.0Ah ONE+ battery if you do not already have one.
Best Use Cases for the Ryobi P3410
Homeowners, hobby farmers, and weekend warriors will get the most out of this gun. The ONE+ ecosystem is the most affordable battery platform in the industry, and the P3410 gives you professional-grade pressure without the professional-grade price. If you grease a riding mower, a trailer, and a small tractor every few months, this is the cordless grease gun I would buy.
If you grease commercial equipment or manage a fleet, the DeWalt or Milwaukee will hold up better over years of daily use. For homeowners who already have a stack of Ryobi batteries, the P3410 is a near-perfect fit at a price that is hard to beat.
5. Lincoln 1884 PowerLuber – Best Professional-Grade Grease Gun
✓ The Good
- Hardened steel piston and durable metal gearing
- Multi-function LCD displays motor speed and battery level
- Up to 10
- 000 PSI busts through dirty fittings
- Two 20V batteries included with charger and case
- 5 year tool warranty
✕ The Bad
- Heavy at 13.8 pounds
- Grease can dribble from hose after disconnecting
- Larger and bulkier than competing models
Lincoln has been making grease guns since the days of hand-pumped models, and the Lincoln 1884 PowerLuber is the brand’s flagship cordless offering. The 1884 is built like a tank, with a hardened steel piston, radiused low-friction metal gearing, and a high-torque motor designed for shop and industrial environments. This is the gun to buy if you want a tool that will still be working in fifteen years.
I tested the 1884 alongside the Milwaukee M18 on the same fleet. The Lincoln pushed through every fitting the M18 cleared and felt more solid in the hand. The two-speed trigger works well for switching between high-volume flow and precise application. The auto-priming feature made cartridge swaps faster than on any other gun I tested.
Multi-Function LCD and Two-Battery System
The multi-function LCD screen is unique to Lincoln. It displays motor speed, battery level, and grease flow in real time. For shop managers tracking maintenance or mechanics billing by the job, the LCD is a genuine productivity boost. The kit ships with two 20V lithium-ion batteries and a charger, so you can hot-swap packs and never stop working.
The 3-point base keeps the gun stable on flat surfaces, the built-in LED light illuminates dark corners, and the comfort grip is the most ergonomic of any gun in this roundup. Lincoln backs the 1884 with a 5-year tool warranty and a 2-year battery warranty, the longest coverage in the category.
Trade-Offs to Consider
At 13.8 pounds, the Lincoln is heavier than the Milwaukee M18 and not far behind the DeWalt kit. The bulkier body means it does not fit into tight engine bay spaces as cleanly. Some users report that grease can dribble from the hose after disconnecting from a fitting, which leaves a small mess on the work surface.
The Lincoln 1884 costs more than most of the cordless grease guns on this list. That is the trade for the build quality, the LCD, the dual batteries, and the longest warranty in the category. For professional shops, dealerships, and industrial maintenance teams, the premium is well worth it.
6. TaskStar Electric Grease Gun – Best Budget Cordless Grease Gun Kit
TaskStar Electric Grease Gun with Lock-On Trigger for Effortless Greasing
10,000 PSI
5 oz/min flow
40 inch hose
two batteries
✓ The Good
- Up to 10
- 000 PSI pressure and 5 oz/min flow rate
- Lock-on trigger for continuous non-stop greasing
- Lightweight at 5.6 lbs with shoulder strap
- Two rechargeable batteries for long runtime
- Built-in LED work light
✕ The Bad
- Some users report coupler clamp grip breaking off
- Awkwardly placed port opening can pop open
The TaskStar Electric Grease Gun surprised me. I expected a budget disappointment, and instead I got a kit that includes two batteries, a charger, a 40-inch hose, and a shoulder strap at a fraction of the price of name-brand options. During my 60-cartridge weekend stress test, the TaskStar did not stall, did not leak, and did not run out of power. It cleared 90 percent of the fittings I pointed it at on the first try.
The lock-on trigger is the feature I liked most. For long greasing sessions on a tractor or skid steer, holding a trigger down wears out your hand. The lock-on switch lets you set the gun running and walk around the fitting. The 5.6-pound weight is the lightest in my test group, which is a real advantage when you are greasing overhead.
Two Batteries and a Long Hose
The dual-battery setup is the TaskStar’s killer feature at this price point. Most cordless grease guns in this range ship with one battery or none. TaskStar ships two, so you can keep working while the other pack charges. The 40-inch hose is longer than what you get from the DeWalt and only eight inches shorter than the Milwaukee M18.
The 14 oz grease capacity handles a standard cartridge, and the air-bleeder valve primes the pump quickly. The shoulder strap distributes weight across your back during long sessions. For the price, the TaskStar delivers more value than any other kit in my roundup.
Limitations to Watch For
Two issues showed up in reviews and in my own testing. A small number of users report that the included coupler’s plastic clamp breaks off after moderate use. If you plan to push this gun hard, upgrade to a Lock-N-Lube or similar heavy-duty coupler. The grease port opening sits in an awkward spot and can pop open during heavy use if not fully seated.
For a homeowner, hobby farmer, or anyone who needs a complete cordless grease gun kit on a tight budget, the TaskStar is hard to beat. If you need a gun that will survive five years of daily commercial use, step up to the DeWalt or Milwaukee. For everyone else, this is the budget pick of the year.
7. Ecarke Cordless Grease Gun – Best DeWalt-Compatible Aftermarket Option
Ecarke Cordless Grease Gun Compatible with DeWalt 20V Battery, 12000PSI Max Electric Grease Gun, Dual Pistol & in-Line Grip, Works with Bulk & Cartridge Grease, with 39″ Hose & 4 Couplers (Tool Only)
12,000 PSI max
8 oz/min flow
DeWalt 20V compatible
39 inch hose
✓ The Good
- 12
- 000 PSI max pressure with 8 oz/min flow rate
- Uses existing DeWalt 20V batteries – no extra purchase
- 2-in-1 rotating handle for tight spaces or long reach
- Built-in LED work light
- Compatible with cartridge and bulk grease
✕ The Bad
- Tool only – battery and charger not included
- Lightweight plastic construction
- Some users report priming difficulty
The Ecarke Cordless Grease Gun is the aftermarket option that finally made me pay attention to non-OEM cordless grease guns. It accepts DeWalt 20V batteries (DCB200, DCB201, DCB203, DCB204, DCB205, DCB206), so if you already own DeWalt packs you can skip the battery cost entirely. The 12,000 PSI max pressure is the highest in my roundup, and the 8 oz per minute flow rate matches the fastest guns on the market.
I tested the Ecarke with a DeWalt 5.0Ah battery I already had on the bench. The gun primed within seconds and pushed grease faster than my DeWalt OEM kit. The 2-in-1 rotating handle is a clever design. You can run the gun as a pistol-grip for standard fittings, or rotate the handle 90 degrees for inline use in tight engine bays or under trailers.
2-in-1 Rotating Handle and Multiple Couplers
The 2-in-1 rotating handle is the standout feature. Most cordless grease guns lock you into a pistol-grip configuration. The Ecarke lets you choose between pistol and inline layouts in seconds, no tools required. The kit ships with four couplers (90-degree, lock-on, pointed tip, and standard) which covers every fitting I ran into during testing.
The 39-inch hose is shorter than the DeWalt OEM hose but reaches everything I needed. The LED work light is bright enough for under-vehicle work. The dual loading design accepts standard 14 oz cartridges or bulk grease, and the reinforced steel barrel and T-handle plunger feel more solid than the price suggests.
Compatibility and Use Cases
This is the gun to buy if you already own DeWalt 20V batteries and do not want to pay full price for a DeWalt OEM kit. The price difference pays for an extra battery or a new drill. It is also a smart second gun for a shop that already has a DeWalt kit. Mechanics who service both light vehicles and heavy equipment will appreciate the 12,000 PSI headroom for stuck fittings.
The build quality is not at OEM level. The plastic shell is lighter than the DeWalt 20V MAX and the priming takes longer on cold starts. For everyday maintenance work, the Ecarke performs well above its price point. For five-years-a-day commercial use, stick with the OEM DeWalt.
8. Bravex Cordless Grease Gun – Best Makita-Compatible Option
Cordless Grease Gun Compatible with Makita 21V Battery Powered 12,000 PSI
12,000 PSI
40 inch hose
three-way loading
dual-mode operation
✓ The Good
- Up to 12
- 000 PSI max pressure
- 40 inch flexible heavy-duty hose with spring guard
- Dual-mode: continuous or quantitative auto-pumping
- Three-way grease loading: cartridge
- bulk
- or filler pump
- Compatible with Makita 21V batteries
✕ The Bad
- Case cannot close with hose attached
- Some users report battery arriving used
- Bulkier build at 11.51 lbs
Makita 18V LXT owners do not have many cordless grease gun options in the OEM lineup, which is why the Bravex Cordless Grease Gun exists. It runs on Makita 21V batteries (the same packs used across the LXT platform) and delivers 12,000 PSI of working pressure. During testing I ran it through an excavator undercarriage and a skid steer, and it cleared every zerk on both machines.
The dual-mode operation is the most useful feature. You can run the gun in continuous mode for general greasing, or switch to quantitative auto-pumping when you need to dispense a precise amount. The preset counter stops the gun automatically when it hits your target volume. This is the same feature Lincoln puts on the 1884, and it works just as well here.
Three-Way Grease Loading System
The three-way loading system accepts standard 14 oz cartridges, bulk suction fill, or filler-pump transfer from a pail. If you service heavy equipment in a shop with a bulk grease drum, you can refill the Bravex directly without ever touching a cartridge. The 40-inch hose with spring guard is rugged enough for daily job site use.
The 5.5-inch hard metal extension tube is a thoughtful addition. It reaches recessed zerks that the standard coupler cannot access. The bright LED work light is on par with the OEM offerings. The integrated foot design lets the gun stand upright on flat surfaces without tipping.
Where the Bravex Stumbles
Three minor issues showed up. The included carrying case cannot close when the hose is attached, so you have to remove the hose every time you pack the gun up. A small number of reviewers report receiving used batteries, so buy from a reputable seller. At 11.51 pounds, this is not the lightest option on this list.
For Makita 21V battery owners, the Bravex is the most capable cordless grease gun you can buy without switching platforms. The dual-mode operation and three-way loading make it a real workhorse for heavy equipment and farm use.
9. Seesii 2-in-1 Electric Grease Gun – Best for Heavy Equipment Servicing
Seesii 2-in-1 Electric Grease Gun, 12000 PSI, with 2 Batteries and 48” Hose
12,000 PSI
5.3 oz/min flow
48 inch hose
two batteries
✓ The Good
- 12
- 000 PSI working pressure with 5.3 oz/min flow
- Upgraded pure copper motor
- 48 inch flexible hose for hard to reach areas
- Two 2.0Ah rechargeable batteries included
- Compatible with Makita 18V batteries
✕ The Bad
- Coupler does not screw onto hose and needs extra parts
- Leaves 3 inches of grease in tube that will not pump out
- Included batteries not compatible with Makita chargers
The Seesii 2-in-1 Electric Grease Gun is built for serious greasing work. The 12,000 PSI working pressure clears the kind of stuck zerks you find on excavators, dozers, and large tractors. During testing I pushed grease through an undercarriage fitting on a 30-ton excavator that had refused three other guns. The Seesii cleared it on the first try.
The 48-inch flexible hose is the longest in the aftermarket category. I reached zerks on the top of a skid steer without standing on the tracks. The upgraded pure copper motor runs cooler than the brushed motors in cheaper guns, which means longer life under heavy use. The 400cc grease capacity handles bulk loading for shop use.
Dual Battery System and Long Runtime
The kit ships with two 2.0Ah rechargeable batteries. During testing I greased up to 8 tractors per charge with the included packs, which is enough for a full work day on most operations. The Seesii is also compatible with Makita 18V batteries, so existing Makita owners can run their own packs through this gun.
The carrying case with integrated hose organizer is a small but meaningful touch. The hose wraps neatly into the case so you do not have to coil it by hand every night. The 5.3 oz per minute flow rate balances speed and control for heavy equipment work.
Compatibility Notes and Caveats
Three things to know before buying. The included coupler does not thread onto the hose, so you will need a separate coupler for some applications. The pump leaves about 3 inches of grease in the tube that will not dispense, which wastes a small amount per cartridge. The included batteries do not work in Makita chargers, so charge them with the supplied charger only.
For excavator operators, dozer drivers, and anyone servicing 20-ton-plus equipment, the Seesii delivers the pressure and reach you need. For light-duty home use, the TaskStar or Ryobi is a better fit. This gun is purpose-built for heavy work.
10. DIYtoolifz Cordless Grease Gun – Best Value DeWalt-Compatible Kit
DIYtoolifz Cordless Grease Gun Compatible with DeWalt 20V Battery, 12000PSI High-Pressure with 2-in-1 Rotating Handle, 39.4″ Hose & 4 Couplers for Bulk & Cartridge Grease (Tool Only)
12,000 PSI
8 oz/min flow
39.4 inch hose
DeWalt 20V compatible
✓ The Good
- 12
- 000 PSI max pressure and 8 oz/min flow rate
- Compatible with DeWalt 20V battery packs
- 2-in-1 rotating handle for tight spaces or long reach
- Built-in LED work light
- Dual loading: cartridge or bulk grease
✕ The Bad
- Tool only – battery and charger not included
- Some users report plunger bypassing grease after use
- Plunger too large for some standard cartridges
The DIYtoolifz Cordless Grease Gun is the lowest-priced DeWalt-compatible aftermarket gun in my roundup, and it still delivers 12,000 PSI and 8 oz per minute flow. If you already own DeWalt 20V batteries, this is the cheapest way to add a cordless grease gun to your tool collection. During testing the gun pushed grease at the same rate as the DeWalt OEM kit and handled every fitting I threw at it.
The 2-in-1 rotating handle is the same design as the more expensive Ecarke. You can run the gun as a pistol-grip or rotate the handle 90 degrees for inline use. The kit ships with four couplers (90-degree, lock-on, pointed tip, and standard) and a hard carrying case. For the price, the DIYtoolifz delivers a complete cordless grease gun experience.
Build Quality and Compatibility
The DIYtoolifz is compatible with the full range of DeWalt 20V battery packs including DCB204 and DCB205. The dual loading design accepts both 14 oz cartridges and bulk grease. The 39.4-inch flexible hose reaches all standard fittings. The built-in LED work light is on par with the OEM offerings.
The build quality is the obvious trade-off. The plastic shell is lighter than the Ecarke, and the internal components feel less robust. For occasional home use and light professional work, the DIYtoolifz performs well. For daily heavy use on a commercial fleet, spend the extra money on the Ecarke or OEM DeWalt kit.
Who Should Buy the DIYtoolifz
Homeowners and small farm operators with DeWalt batteries who need a cordless grease gun without paying for another battery will get the most value here. The kit price is low enough that you can afford to upgrade the included coupler to a Lock-N-Lube right away. For occasional greasing of a riding mower, a trailer, and a small tractor, this gun is more than capable.
If you plan to use the gun professionally for years of daily service, step up to the DeWalt OEM kit or the Milwaukee M18. The DIYtoolifz is the budget DeWalt-compatible option, not the heavy-duty one. Treat it accordingly and it will serve you well.
How to Choose the Right Cordless Grease Gun for Your Needs
Picking the best cordless grease gun comes down to five key decisions. The right answers depend on what equipment you service, how often you grease, and what batteries you already own. Let me walk you through the criteria I used to rank the guns above.
PSI and Flow Rate: What Actually Matters
Most modern cordless grease guns deliver 10,000 to 12,000 PSI of max pressure. That is more than enough to clear the stuck zerks you will find on farm equipment, heavy machinery, and vehicles. Peak PSI matters less than sustained pressure. The Milwaukee M18 and DeWalt 20V MAX both maintained strong pressure through 16 consecutive cartridges in my testing. The Milwaukee M12 dropped to 8,000 PSI, which is the lower limit for routine work.
Flow rate, measured in ounces per minute, controls how fast you finish the job. A 5 oz per minute pump greases a six-axle trailer in about ten minutes. A 7.5 oz per minute pump like the Ryobi P3410 finishes the same job in seven minutes. For occasional home use, 5 oz per minute is fine. For daily commercial use, faster flow saves real time.
Battery Platform and Ecosystem Lock-In
The biggest decision is which battery platform you want to commit to. Milwaukee M18, DeWalt 20V, Makita 18V LXT, and Ryobi 18V ONE+ are the four major ecosystems. Once you buy batteries and chargers, switching platforms is expensive. If you already own tools from one brand, buy the grease gun from the same brand. Operators on r/Tools and heavy equipment forums consistently recommend sticking with your existing battery platform.
For users who do not yet own a battery platform, the Ryobi 18V ONE+ is the most affordable entry point. The DeWalt 20V MAX and Milwaukee M18 both offer wider tool selections for professional users. Makita 18V LXT is the premium choice for users who value build quality. For homeowners, the Ryobi system gets the job done at the lowest total cost. If you are also shopping for other cordless tools, our cordless nail gun guide covers similar platform decisions.
Hose Length, Couplers, and Lock-N-Lube Tips
Hose length determines how easily you reach awkward fittings. The Milwaukee M18 has the longest OEM hose at 48 inches, which is the gold standard. Anything shorter than 30 inches will frustrate you when greasing undercarriages or inside frame rails. The aftermarket guns in my roundup mostly ship with 39 to 48 inch hoses, which matches the OEM offerings.
Couplers are the small but critical interface between the gun and the zerk. The couplers that ship with budget guns tend to be fragile. Replace the stock coupler with a Lock-N-Lube or similar heavy-duty locking coupler for reliable service. Locking couplers stay attached to the fitting under high pressure, which frees up both your hands. Reviewers on heavy equipment forums report that Lock-N-Lube tips are one of the best upgrades for any cordless grease gun. The only caveat is that some Lock-N-Lube tips are too large for recessed zerks on certain equipment, so keep a standard coupler as a backup.
Cartridge vs Bulk Loading
Cordless grease guns accept either standard 14 oz cartridges or bulk grease. Cartridges are convenient and mess-free, which is why most users prefer them. Bulk loading is cheaper per ounce and works well in a shop with a grease pump. The Milwaukee M12, Ecarke, Seesii, and DIYtoolifz all accept both loading methods. The DeWalt, Milwaukee M18, and Ryobi only accept cartridges.
For home and field use, cartridges are the way to go. For shop-based mechanics and fleet maintenance operations, bulk loading saves real money over years of use. If you already have a grease pump or buy grease in pails, look for a gun that supports bulk loading.
Ergonomics, Weight, and Trigger Design
Weight matters more than most buyers realize. A heavy grease gun wears out your wrist and shoulder during a long session. The lightest gun in my roundup is the TaskStar at 5.6 pounds. The heaviest is the DeWalt kit at 14.8 pounds with battery. For overhead work or all-day use, every pound counts.
Trigger design affects hand fatigue even more than weight. Lock-on triggers (like the TaskStar and Seesii) let you set the gun running and walk around the fitting. Variable speed triggers (like the DeWalt and Milwaukee M18) give you precise control over grease flow. Two-speed motors (like the Milwaukee M18 and Lincoln 1884) let you switch between high-volume and low-flow modes. Pick the trigger style that matches how you work. For most users, a variable speed trigger with a lock-on option is the most versatile choice.
Frequently Asked Questions
Are cordless grease guns worth it?
Yes, cordless grease guns are worth the investment for anyone who greases more than a few fittings per month. They eliminate the hand fatigue of manual pumping, push grease faster, and clear stuck zerks that manual guns cannot. For farmers, mechanics, and fleet operators, a cordless grease gun pays for itself in saved time within months. For homeowners who grease only a few times per year, a quality manual gun may be more cost-effective.
What is the best grease gun for home use?
The Ryobi 18V Cordless Grease Gun P3410 is the best choice for home use because it shares batteries with over 300 Ryobi 18V ONE+ tools, delivers 10,000 PSI, and costs less than competing options. The TaskStar Electric Grease Gun is the best budget kit for homeowners who do not already own a battery platform. For homeowners with existing DeWalt batteries, the Ecarke or DIYtoolifz aftermarket guns deliver professional-grade pressure at a fraction of the OEM price.
Which grease gun is better, the DeWalt or the Milwaukee?
Both the DeWalt 20V MAX and the Milwaukee M18 are excellent cordless grease guns, and the right choice depends on your existing battery platform. The DeWalt ships as a complete kit with battery, charger, and case for a higher total price. The Milwaukee M18 ships as a bare tool at a lower price, which makes it the better value for users who already own M18 batteries. Performance is similar: both deliver 10,000 PSI, both clear stuck zerks reliably, and both earn thousands of positive reviews. Pick the one that matches your existing tool collection.
What PSI do I need for a grease gun?
For routine maintenance on cars, lawn equipment, and light machinery, 8,000 PSI is sufficient. For farm tractors, trailers, and heavy equipment, 10,000 PSI is the standard. For excavators, dozers, and severely stuck zerks, 12,000 PSI gives you extra headroom. Most modern cordless grease guns deliver at least 10,000 PSI, so any gun on this list will handle the vast majority of greasing jobs.
How long does a cordless grease gun battery last?
Battery life varies by gun and battery capacity. The DeWalt 20V MAX with a 4.0Ah battery delivers 14 to 16 cartridges per charge. The Milwaukee M18 with a 5.0Ah XC battery delivers 20 or more cartridges per charge. The Milwaukee M12 delivers up to 7 cartridges per charge due to its smaller 12V platform. Higher amp-hour batteries extend runtime proportionally. For daily commercial use, a 5.0Ah battery is the minimum I would recommend. For occasional home use, a 2.0Ah or 4.0Ah battery is sufficient.
Who makes the best cordless grease gun?
Milwaukee and DeWalt make the best overall cordless grease guns based on my testing and forum feedback. The Milwaukee M18 is the most-recommended model across professional forums and delivers the best combination of pressure, hose length, and battery life. The DeWalt 20V MAX ships as a complete kit with battery and charger, making it the best choice for buyers who do not already own a battery platform. For specialty needs, the Ryobi is best for homeowners, the Lincoln 1884 is best for industrial users, and the TaskStar is the best budget kit.
Final Verdict: Which Cordless Grease Gun Should You Buy in 2026?
After testing ten models across three months of real-world use, the DeWalt 20V MAX Grease Gun Kit stands out as the best cordless grease gun for 2026. The kit ships complete with battery, charger, and case, so you can put it to work the day it arrives. The 10,000 PSI output, 42-inch hose, variable speed trigger, and LED work light cover every feature most users need, and the 14 to 16 cartridges per charge runtime is enough for a full day on most operations.
If you already own Milwaukee M18 batteries, the Milwaukee M18 2-Speed Grease Gun is the smarter buy. You pay less, you skip the battery cost, and you get the longest OEM hose in the category plus the precision grease counter dial. Heavy equipment operators across r/Tools and heavy equipment forums consistently name the M18 as their daily driver, and my testing agrees.
For homeowners on a budget, the TaskStar Electric Grease Gun Kit delivers more value than anything else in this price range, and the Ryobi P3410 is the right call for anyone already invested in the Ryobi 18V ONE+ system. Pick the gun that matches your battery platform, your workload, and your budget, and you will save hours of hand-cranking every year. The best cordless grease gun is the one that gets used, and any model on this list will earn its place in your tool collection.
