Best Power Grease Gun (2026)
Five cordless power grease guns compared by max PSI, flow rate, hose and battery platform, from an M12 12V compact to a 12,000 PSI DeWalt 20V model.
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Top picks at a glance
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- 1
Best OverallEcarke DeWalt 20V9.5/10View on Amazon - 2
Best 3-SpeedEcarke Milwaukee 18V9.5/10View on Amazon - 3
Best KitTaskStar TSGRB0019.4/10View on Amazon - 4
Best 18VRyobi P34109.4/10View on Amazon - 5
Best CompactMilwaukee 2446-209.4/10View on Amazon - 6
LockNLube Locking Grease Gun CouplerView on Amazon - 7
Workforce Mini Grease GunView on Amazon - 8
Lincoln 1142 Lever Action Grease GunView on Amazon - 9
LockNLube 2-in-1 Pneumatic Grease Gun with Single Shot &View on Amazon
A power grease gun turns a forearm workout into a trigger pull: the motor does the pumping, you aim the coupler. The best power grease gun pairs enough PSI for stiff fittings with a flow rate that fills them fast, on a battery platform you already own. These five run 8,000 to 12,000 PSI, and four of the five are tool-only listings that ride on Milwaukee, Ryobi or DeWalt batteries.
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Quick picks
- Best Overall Ecarke DeWalt 20V: 12,000 PSI with 8 oz/min flow, 4 couplers, 39-inch hose, DeWalt 20V compatible. Check price on Amazon
- Best 3-Speed Ecarke Milwaukee 18V: 12,000 PSI max with 3-speed flow, 4 couplers, 39-inch hose, Milwaukee 18V compatible. Check price on Amazon
- Best Kit TaskStar TSGRB001: 10,000 PSI with 2 batteries included, lock-on trigger, 40-inch hose, 5.6 pounds. Check price on Amazon
- Best 18V Ryobi P3410: 10,000 PSI with 7.5 oz/min flow, steel grease tube, LED light, 30-inch hose. Check price on Amazon
- Best Compact Milwaukee 2446-20: Over 8,000 PSI, 14 inches long, 36-inch hose, up to 7 cartridges per charge. Check price on Amazon
The picks
Ecarke Cordless Grease Gun Compatible with DeWalt
Cordless grease gun compatible with DeWalt 20V batteries, with 12,000 PSI, 8 oz/min flow and 4 couplers.
Pros
- 12,000 PSI with 8 oz/min flow, the highest stated flow here
- Compatible with DeWalt 20V batteries, DCB200 through DCB206 named
- 39-inch hose with 4 couplers and a hard carrying case
- LED light and 2-in-1 rotating pistol and in-line handle
Cons
- Battery and charger not included
- 10.45 lb stated weight
- No warranty term stated
- No stated flow control dial
Ecarke Cordless Grease Gun Compatible
Cordless grease gun compatible with Milwaukee 18V batteries, with 12,000 PSI max and 3-speed adjustable flow.
Pros
- 12,000 PSI max with 3-speed flow: 5.3, 7, 8.8 oz/min
- Compatible with Milwaukee 18V batteries
- 39-inch hose with 4 couplers and a hard plastic case
- Locking trigger and shoulder strap for continuous greasing
Cons
- Battery and charger not included
- 11.68 lb stated weight, the heaviest here
- No warranty term stated
- Newest listing of the five
TaskStar Electric Grease Gun with Lock-On Trigger
Electric grease gun kit with 2 batteries included, 10,000 PSI, lock-on trigger and a 40-inch hose.
Pros
- 2 batteries included, the only kit with batteries here
- Up to 10000 PSI with 5 oz/min flow stated
- Lock-on trigger for continuous greasing
- 40-inch hose, the longest stated here
Cons
- No warranty term stated
- 5 oz/min, the lowest stated flow here
- Bullets state 5.6 lb against the spec table's 6.16
- No named battery platform
Ryobi 18V Volt Cordless Grease Gun P3410
18V cordless grease gun with 10,000 PSI, 7.5 oz/min flow, steel grease tube and a 30-inch hose.
Pros
- 10,000 PSI with 7.5 oz/min flow stated
- Steel grease tube for durability stated
- On-board LED work light stated
- 30-inch flexible hose for hard-to-reach fittings
Cons
- Battery and charger not included
- 8.3 lb stated weight
- No warranty term stated
- Thinnest stated spec sheet of the cordless five
Milwaukee Bare-Tool Milwaukee 2446-20 M12 12-Volt
M12 12V cordless grease gun with over 8,000 PSI, a 14-inch body, 36-inch hose and up to 7 cartridges per charge.
Pros
- Over 8,000 PSI on the compact M12 12V platform
- 14 inches long and 7.2 lb, the most compact here
- Up to 7 cartridges per charge stated
- Overload protection and air bleeder valve stated
Cons
- Battery and charger sold separately
- Over 8,000 PSI, the lowest stated pressure here
- No stated flow rate
- No warranty term stated
More options to compare
LockNLube Locking Grease Gun CouplerCheck price on Amazon
Workforce Mini Grease GunCheck price on Amazon
Lincoln 1142 Lever Action Grease GunCheck price on Amazon
LockNLube 2-in-1 Pneumatic Grease Gun with Single Shot &Check price on Amazon
Compare the picks
| Power grease gun | Max pressure | Flow | Hose | Battery |
|---|---|---|---|---|
| Ecarke DeWalt 20V | 12,000 PSI | 8 oz/min | 39 in | DeWalt 20V, tool only |
| Ecarke Milwaukee 18V | 12,000 PSI max | 5.3, 7, 8.8 oz/min | 39 in | Milwaukee 18V, tool only |
| TaskStar TSGRB001 | 10,000 PSI | 5 oz/min | 40 in | 2 batteries included |
| Ryobi P3410 | 10,000 PSI | 7.5 oz/min | 30 in | 18V, tool only |
| Milwaukee 2446-20 | Over 8,000 PSI | Not stated | 36 in | M12 12V, tool only |
20 October 2026
How we scored them
Each grease gun is scored on performance, build, value, safety and warranty, with the weights published on our How We Pick page. A spec the listing does not publish scores nothing.
| Product | Shop Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| Ecarke DeWalt 20V | 9.5 | 33 | 21 | 21 | 0 | 0 |
| Ecarke Milwaukee 18V | 9.5 | 32 | 21 | 21 | 0 | 0 |
| TaskStar TSGRB001 | 9.4 | 29 | 19 | 21 | 0 | 0 |
| Ryobi P3410 | 9.4 | 30 | 20 | 19 | 0 | 0 |
| Milwaukee 2446-20 | 9.4 | 27 | 21 | 16 | 0 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
What the listings tell you
Pressure and flow separate the cordless five. The two Ecarke models each state 12,000 PSI: the DeWalt 20V version with an 8 oz/min flow rate, and the Milwaukee 18V version with a 3-speed dial of 5.3, 7 and 8.8 oz/min. The Ryobi states 10,000 PSI with 7.5 oz/min. The TaskStar states up to 10000 PSI with 5 oz/min. The Milwaukee M12 states over 8,000 PSI with no stated flow rate. The 3-speed dial on the Ecarke Milwaukee is the only stated flow control here: Low for precision work, High for clogged fittings, in the listing’s words.
Battery platform is the buying decision. The Milwaukee 2446-20 runs on M12 12V batteries, is 14 inches long and 7.2 pounds, and states up to 7 cartridges per charge with a 36-inch flex hose, air bleeder valve, overload protection and bulk filler valve. The Ryobi P3410 runs on 18V batteries with a steel grease tube, LED work light and 30-inch hose at 8.3 pounds. The Ecarke DeWalt version fits DeWalt 20V batteries (DCB200 through DCB206 named) with a 39-inch hose and 4 couplers at 10.45 pounds. The Ecarke Milwaukee version fits Milwaukee 18V batteries with a 39-inch hose, 4 couplers, shoulder strap and hard case at 11.68 pounds. The TaskStar is the only one with batteries in the box: two rechargeable batteries, a 40-inch hose and LED light at a stated 5.6 pounds.
Loading is cartridge or bulk across the board. The Milwaukee M12 states 14 oz cartridge or 16 oz bulk capacity. The Ecarke models state standard 14 oz cartridges or bulk and drum grease with a reinforced steel barrel and T-handle plunger, compatible with NLGI #0, #1 and #2 grease. The TaskStar states 14 oz capacity. The Ryobi states no capacity figure. Runtime claims: the Milwaukee states up to 7 cartridges per charge, and the TaskStar states one full charge greases up to 10 tractors. No warranty term is stated on any of the five.
How to pick the best power grease gun
Start with the batteries you own. A tool-only listing is the value play only if the platform is already in your shop: the Milwaukee needs M12 12V, the Ryobi needs 18V, and the Ecarke models need Milwaukee 18V or DeWalt 20V respectively. The TaskStar is the no-platform option with 2 batteries included. Buying into a new platform for one tool erases the savings.
Then weigh pressure against flow. The Ecarke pair leads on stated PSI at 12,000, but the DeWalt version’s 8 oz/min flow and the Milwaukee version’s 3-speed dial are the stated reasons to pick one over the other. The Ryobi’s 10,000 PSI with 7.5 oz/min is the middle ground on the 18V platform, and the Milwaukee M12’s over 8,000 PSI in a 14-inch, 7.2-pound body is the compact pick.
Check the hose and couplers. The TaskStar’s 40-inch hose is the longest stated, followed by the two Ecarke 39-inch hoses, the Milwaukee’s 36-inch and the Ryobi’s 30-inch. The Ecarke models include 4 couplers each (90-degree, lock-on, pointed tip, standard); the others state a single coupler. See the full cordless tools range for platform options.
Use rated jack stands on solid ground, wear eye protection with power and air tools, keep fuel-burning equipment out of a closed garage, and follow the manual for every tool. Read our Safety Disclaimer.
Garage Fit Check
- Confirm the battery platform first: four of the five are tool-only with no battery or charger included
- Match PSI to the fittings: 12,000 PSI for the stiffest, with the 3-speed dial on the Ecarke Milwaukee for delicate work
- Purge air before starting: the Milwaukee M12 states an air bleeder valve
- Use the stated flow rates as the guide: 5 to 9 oz/min across the group
- Wear gloves and eye protection around high-pressure grease: a burst fitting throws grease
Pressure and flow: what the listings state
Matching the gun to stiff fittings
Stated maximums: both Ecarke models at 12,000 PSI, the Ryobi at 10,000 PSI with 7.5 oz/min flow, the TaskStar at 10,000 PSI with 5 oz/min flow, and the Milwaukee at over 8,000 PSI. The Ecarke Milwaukee 18V model states a 3-speed adjustable flow of 5.3, 7 and 8.8 oz/min; the Ecarke DeWalt 20V model states 8 oz/min. For the stiffest fittings, the Ecarke pair states the most pressure; for matching flow to the fitting, the Ecarke 3-speed dial is the only stated speed control here.
Battery systems and what is in the box
Four of the five are tool-only: the Milwaukee M12 12V, the Ryobi 18V, and the Ecarke models that ride on Milwaukee 18V or DeWalt 20V batteries, all stated with batteries and chargers not included. The TaskStar is the only stated kit with 2 batteries included. Stated hose lengths: the TaskStar at 40 inches, both Ecarke models at 39 inches, the Milwaukee at 36 inches with a spring guard, and the Ryobi at 30 inches. If you already own DeWalt 20V or Milwaukee 18V batteries, the Ecarke pair is the stated drop-in route; if not, the TaskStar states batteries in the box.
Frequently Asked Questions
How do you load a cordless grease gun?
The listings state 14 oz cartridges or bulk grease: the Ecarke models add a reinforced steel barrel with T-handle plunger, and the Milwaukee M12 states a bulk filler valve. The Ecarke listings state compatibility with NLGI #0, #1 and #2 grease.
How do you clean a grease gun?
The listings state no cleaning procedure. The Ecarke listings note that a small amount of grease residue on arrival is normal from factory performance checks. Wipe the coupler and hose ends after use to keep grit out of the next fitting.
What is the best cordless grease gun for stiff fittings?
The listings state 12,000 PSI on both Ecarke models, which is the highest stated pressure here. The Milwaukee 18V version adds a 3-speed dial for matching flow to the fitting.
How long does a battery last on a grease gun?
The Milwaukee M12 states up to 7 cartridges per charge, and the TaskStar states one full charge greases up to 10 tractors. The other three state no runtime figure.
Do cordless grease guns come with batteries?
Four of the five are tool-only: the Milwaukee, Ryobi and both Ecarke models state batteries and chargers are not included. The TaskStar is the only listing with 2 batteries included.
Related: our best high pressure grease gun, the best battery charger maintainer and battery charger vs battery maintainer.
