I used to grease my tractor with a lever gun, and by the last fitting my forearm was done. A cordless grease gun turns that job into a few trigger pulls. If you grease anything with more than a handful of zerk fittings, whether it’s a tractor, a skid steer, a trailer or a truck, it’s one of the best upgrades you can buy for the shop.
Quick answer: the DeWalt 20V MAX DCGG571 is the best cordless grease gun for most people. If you run Milwaukee M18, get the Milwaukee 2646-20. If you don’t own either battery platform and want a complete kit for under $100, the TaskStar 12000 PSI kit comes with batteries.
Every rating, price and spec below was checked on the live Amazon listing on October 19, 2026. PSI, flow and runtime figures are each maker’s own claims.
Quick Picks
- Best overall: DeWalt 20V MAX DCGG571
- Best for Milwaukee M18 users: Milwaukee M18 2646-20
- Best high flow: DeWalt 20V MAX 2-Speed
- Best compact: Milwaukee M12 2446-20
- Best value from a big brand: Ryobi 18V P3410
- Best for farm and pro use: Lincoln 1884 PowerLuber
- Best budget kit: TaskStar 12000 PSI
- Best budget for DeWalt batteries: Ecarke 20V
- Best 2-in-1: Seesii 2-in-1
Quick Comparison
| Grease Gun | Battery | Listed Max PSI | Listed Flow | Hose | Rating |
|---|---|---|---|---|---|
| DeWalt DCGG571 | DeWalt 20V MAX | 10,000 | 5.0 oz/min | 42″ | 4.8 (6,373) |
| Milwaukee 2646-20 | Milwaukee M18 | 10,000 | 2-speed | 48″ | 4.6 (3,619) |
| DeWalt 2-Speed | DeWalt 20V MAX | 10,000 | Up to 9 oz/min | 47″ | 4.7 (49) |
| Milwaukee M12 2446-20 | Milwaukee M12 | Over 8,000 | Not listed | Not listed | 4.3 (1,813) |
| Ryobi P3410 | Ryobi 18V ONE+ | 10,000 | 7.5 oz/min | 30″ | 4.7 (1,278) |
| Lincoln 1884 | Lincoln 20V | 10,000 | Not listed | 36″ | 4.6 (532) |
| TaskStar | Included | 12,000 | Not listed | 48″ | 4.5 (477) |
| Ecarke | DeWalt 20V (not included) | 12,000 | 8 oz/min | 39″ | 4.5 (398) |
| Seesii 2-in-1 | Included (2) | 12,000 | 5.3 oz/min | 48″ | 4.4 (187) |
Buy for Your Battery Platform First
The cheapest way into a quality cordless grease gun is a bare tool for batteries you already own. A DeWalt or Milwaukee bare tool costs less than most kits once you count the battery you don’t have to buy. If you’re starting from zero, a complete kit makes more sense.
The budget guns that say “compatible with DeWalt 20V” or “compatible with Milwaukee 18V” are made by other companies. They use the same battery, but DeWalt or Milwaukee won’t stand behind them. Our battery platform comparison and DeWalt 20V battery compatibility chart help if you’re still choosing.
What Actually Matters in a Cordless Grease Gun
- PSI: the pressure that pushes grease through a dirty or stiff fitting. 10,000 PSI from a name brand is plenty. The “12,000 PSI” on budget guns is the maker’s claim and hard to compare directly.
- Flow rate (oz/min): how fast grease comes out. Higher flow saves real time on big equipment with dozens of fittings.
- Runtime: listed as tubes or cartridges per charge. A bigger battery means more fittings before a recharge.
- Hose length: 42 to 48″ reaches buried fittings on tractors and loaders without moving the gun around.
- Speed settings and trigger: two speeds (high pressure or high flow) and a variable trigger let you avoid blowing out bearing seals.
- Loading options: almost all take standard 14 oz cartridges, and most can also be filled from bulk grease.
- Air bleeder valve: releases trapped air when the gun won’t prime. You’ll use it more than you think.
The Best Cordless Grease Guns, Reviewed
1. DeWalt 20V MAX DCGG571 – Best Overall
This is the grease gun I’d buy for most shops and farms. DeWalt lists up to 10,000 max PSI to push through clogged fittings and up to 5.0 oz/min of flow, with a variable speed trigger, a 42″ flexible hose, a bright LED to find fittings in the dark, and an integrated foot so you can set it down without it tipping. The kit version adds a pump filter screen to keep dirt out of the pump and an air-bleeder valve.
With more than 6,300 ratings at 4.8 stars, it’s the most trusted gun in this category. The bare tool was $194.90 when I checked. Amazon’s review summary says buyers find it makes greasing farm and heavy equipment quick and easy, forces grease through tough zerks, and appreciates the long hose. The main complaint is weight. If you need a battery, the DCGG571M1 kit (4.8 stars from 6,600+ ratings, $273.08 when I checked) includes one and a charger, and buyers report up to 40 cartridges per charge.
Pros: Huge review base; 10,000 PSI; variable speed trigger; LED; stable foot; long hose.
Cons: Heavy with a battery; single speed.
Skip it if: you’re on Milwaukee batteries. Get the 2646-20.
2. Milwaukee M18 2646-20 – Best for Milwaukee M18 Users
Milwaukee’s M18 grease gun matches the DeWalt on pressure, with up to 10,000 PSI, and adds two speeds, a longer 48″ hose, a lock-on/lock-off trigger and a pre-set grease counter dial. The counter is a nice touch if you service equipment to a schedule. An air bleeder valve handles priming.
It has 4.6 stars from more than 3,600 ratings and was $194.50 for the bare tool when I checked. Amazon’s review summary says buyers find it makes greasing faster and easier and like the two speeds, with one calling it a game-changer for heavy-duty maintenance. Weight gets mixed feedback. The 2646-22CT kit with two batteries was $349.99.
Pros: Two speeds; 48″ hose; lock-on trigger; grease counter dial; runs on M18.
Cons: Heavy; bare tool only at this price.
Skip it if: you don’t own M18 batteries.
3. DeWalt 20V MAX 2-Speed – Best High Flow
DeWalt’s newer 2-speed gun is the one to look at if you grease big equipment every week. DeWalt lists up to 9 oz/min of flow, nearly double the original’s 5.0, up to 7 tubes per charge, 10,000 max PSI, two speeds with a variable trigger, a reinforced 47″ hose and an onboard LED. It comes with a 3-year limited warranty.
It has 4.7 stars, but from only 49 ratings so far, and was $242.99 when I checked. A kit version with battery and charger (4.3 stars from 59 ratings) was $265.04. Buyers of the kit say it clears stubborn fittings quickly and like the 47″ hose.
Pros: Up to 9 oz/min; two speeds; 7 tubes per charge; long reinforced hose.
Cons: Few ratings so far; costs more than the original DCGG571.
Skip it if: you grease a few fittings a month. The original DeWalt is cheaper and proven.
4. Milwaukee M12 2446-20 – Best Compact
The M12 gun is the one for tight spaces and lighter work. Milwaukee lists it at only 14″ long and 7.2 lbs, with over 8,000 PSI, up to 7 grease cartridges per charge, integrated hose storage, an LED fuel gauge and an air bleeder valve. It takes 14 oz cartridges or 16 oz bulk.
It has 4.3 stars from more than 1,800 ratings and was $163.48 for the bare tool when I checked. Amazon’s review summary says buyers find it makes maintenance easier and saves time, but some report it struggles with stiff fittings, and opinions on battery life are mixed.
Pros: Compact and lighter; up to 7 cartridges per charge; hose storage; fuel gauge.
Cons: Less pressure than the 18V/20V guns; some struggles with stiff fittings.
Skip it if: you grease heavy equipment with crusty fittings. Get an M18 or 20V gun.
5. Ryobi 18V ONE+ P3410 – Best Value From a Big Brand
On paper, the Ryobi is the best deal here. Ryobi lists 10,000 PSI and a 7.5 oz/min flow rate, more than the original DeWalt, plus a steel grease tube, an onboard LED and a 30″ hose. It runs on the same 18V ONE+ batteries as hundreds of other Ryobi tools.
It has 4.7 stars from more than 1,200 ratings and was $122.65 for the bare tool when I checked. Amazon’s review summary says buyers find it excellent quality and a big time saver, with one buyer greasing an entire tractor in under 10 minutes. Durability is the catch: several buyers report units that broke on first use or lasted about a year.
Pros: Lower price; high listed flow; steel tube; runs on Ryobi ONE+.
Cons: Durability reports are mixed; shorter 30″ hose.
Skip it if: you grease every day. Spend more on DeWalt, Milwaukee or Lincoln.
6. Lincoln 1884 PowerLuber 20V – Best for Farm and Pro Use
Lincoln makes lubrication equipment for a living, and the PowerLuber is built like it. Lincoln lists a hardened steel piston, low-friction metal gearing, a high-torque motor and a precision-seated check ball, with up to 10,000 PSI, a built-in vent valve for priming, and a 36″ hose. It’s the one I’d pick for a fleet, a farm with a lot of iron, or a shop where the gun gets used every day.
It has 4.6 stars from 532 ratings and was $403.24 when I checked. Amazon’s review summary says buyers find it good quality, easy to use and a time saver, with battery life lasting at least three tubes for one buyer. Durability opinions are mixed.
Pros: Built by a lubrication specialist; metal gearing and hardened piston; easy priming.
Cons: Expensive; its own 20V battery platform; shorter hose than DeWalt or Milwaukee.
Skip it if: you grease a mower and a trailer a few times a year.
7. TaskStar 12000 PSI Cordless Grease Gun – Best Budget Kit
If you don’t own any of the big battery platforms, this is the cheapest complete kit I’d consider. TaskStar lists up to 12,000 PSI, a dual-handle design that switches between straight and pistol grip, a 48″ hose and a 90° coupler adapter for tight fittings.
It has 4.5 stars from 477 ratings and was $89.99 when I checked. Amazon’s review summary says buyers call it an absolute workhorse that’s worth the price, say it works with both English and metric fittings, and find it easy to attach and detach.
Pros: Complete kit under $100; dual handle; 48″ hose; 90° adapter.
Cons: Proprietary battery; PSI is the maker’s claim; newer brand without a long track record.
Skip it if: you already own DeWalt or Milwaukee batteries.
8. Ecarke 20V for DeWalt Batteries – Best Budget for DeWalt Owners
If you already have a drawer full of DeWalt 20V batteries but don’t want to pay DeWalt prices, the Ecarke runs on them. Ecarke lists 12,000 PSI and 8 oz/min of flow, a 2-in-1 rotating handle that switches between pistol and in-line grip, a built-in LED, and support for bulk and cartridge grease. Battery and charger are not included.
It has 4.5 stars from 398 ratings and was $97.72 when I checked, about half the price of the DeWalt bare tool. Ecarke also sells a version for Milwaukee 18V batteries.
Pros: Uses your DeWalt 20V batteries; high listed flow; dual grip; LED.
Cons: Not a DeWalt product, so no DeWalt warranty; specs are the maker’s claims.
Skip it if: you want the proven track record of the real DeWalt.
9. Seesii 2-in-1 Electric Grease Gun – Best 2-in-1
The Seesii comes with two batteries and a 48″ hose, and Seesii lists 12,000 PSI working pressure and 5.3 oz/min from a copper motor. The 2-in-1 design lets you run it as a pistol grip or straight gun depending on where the fitting is.
It has 4.4 stars from 187 ratings and was $99.99 when I checked. Amazon’s review summary says buyers find it good quality and convenient, and like not having to hand pump, with one saying it makes greasing tractors and implements a breeze. Battery compatibility gets mixed feedback: one buyer says it accepts Makita 18V batteries, while another says the included batteries don’t work as expected. Seesii also sells a newer model with a blockage alarm, 10 oz/min flow and six speeds (4.5 stars from 22 ratings).
Pros: Two batteries included; 48″ hose; 2-in-1 grip.
Cons: Mixed battery reports; fewer ratings than the big brands.
Skip it if: you want a long track record. Pick the DeWalt or Milwaukee.
How to Load a Cordless Grease Gun (and Get the Air Out)
- Unscrew the barrel from the head.
- Pull the follower rod back and lock it.
- Remove the plastic cap from the grease cartridge, insert it open end first, then pull off the metal tab.
- Screw the barrel back on, but leave it about one turn loose.
- Release the follower rod, then tighten the barrel.
- Open the air bleeder valve (if your gun has one) and run the trigger until grease, not air, comes out. Close the valve.
To fill from bulk grease, use the bulk filler fitting if your gun has one, or suction-fill the barrel by pushing it into the grease and pulling back the follower rod.
Common Problems
- Grease won’t come out: almost always an air pocket. Use the bleeder valve, or loosen the barrel slightly and run the trigger.
- Fitting won’t take grease: clean it, then try again at high pressure or low speed. If it still won’t take grease, the fitting is clogged and needs replacing.
- Grease leaks around the coupler: the coupler is worn or not fully seated. A quick-release or locking coupler is a cheap upgrade.
- Blown seals: too much pressure on sealed bearings. Go slow and stop when you see the seal start to swell.
FAQ
Is a cordless grease gun worth it?
If you grease equipment with lots of fittings, yes. It’s much faster than a manual gun and saves your hands. For one lawn mower a year, a manual lever gun is fine.
How much PSI do I need?
Most fittings take grease at far less than 10,000 PSI, but that much pressure helps push through dirty or stiff fittings. Every major brand gun in this guide lists up to 10,000 PSI.
DeWalt or Milwaukee grease gun?
Both are excellent. Buy the one that matches the batteries you already own. Milwaukee adds two speeds and a longer hose on the 2646-20, while the original DeWalt has the bigger review base.
Can I use bulk grease in a cordless grease gun?
Most cordless guns accept both 14 oz cartridges and bulk grease. Check the listing for a bulk filler valve or suction loading.
How many cartridges does a battery last?
It depends on the battery size and how hard you push it. DeWalt lists up to 7 tubes per charge on its newer 2-speed gun, and Milwaukee lists up to 7 cartridges on the M12.
Why does my grease gun lose prime?
Air gets trapped when you change cartridges. Open the bleeder valve and run the gun until grease flows steadily.
Bottom Line
- Most people: DeWalt DCGG571.
- Milwaukee shops: Milwaukee 2646-20.
- Heavy daily use: Lincoln 1884 or the DeWalt 2-Speed.
- Budget kit: TaskStar.
- Budget on DeWalt batteries: Ecarke.
Building out the shop? See my picks for the best cordless impact wrenches, best torque wrenches, best mechanic tool sets, the best tools for an oil change, and the best car lifts for a home garage. If you’re picking a battery platform, start with our best cordless combo kits.
