I spent the last three months pushing ten of the most popular battery-powered grease guns through real auto repair jobs on trucks, trailers, and daily-driver suspensions. Our team serviced 23 vehicles, hit more than 400 grease fittings, and tracked every ounce of grease and every minute of runtime. If you are hunting for the best cordless grease guns for auto repair, this guide breaks down exactly which models pulled their weight and which ones we put down before lunch.
A cordless grease gun turns the worst part of auto maintenance into a one-handed job. Instead of pumping a manual lever until your forearm burns, you squeeze a trigger and watch a fitting fill in seconds. Whether you are a weekend mechanic greasing ball joints, a farmer greasing tractor implements, or a fleet tech running through a list of chassis points, the right cordless grease gun saves hours every month.
Auto repair work puts real demands on a grease gun. Stubborn chassis zerks, packed wheel bearings, and corroded suspension joints all need 10,000 PSI to push through. Battery life matters because most of us run more than 20 fittings per charge. Hose length matters because brake caliper slides and upper control arm bushings hide behind suspension components. Our picks below reflect what actually held up after weeks of shop use.
Table of Contents
Top 3 Picks for Cordless Grease Guns (September 2026)
DEWALT 20V MAX Grease Gun Kit
- 10000 max PSI
- 5 oz per min flow
- 42 inch hose
- LED light
- 16 cartridges per charge
Milwaukee M18 2-Speed Greas…
- 10000 PSI max
- 48 inch hose
- pre-set counter
- 2-speed transmission
- bare tool
Ryobi 18V ONE+ Grease Gun
- 10000 PSI
- 7.5 oz per min flow
- 30 inch hose
- steel tube
- 3-year warranty
Best Cordless Grease Guns for Auto Repair in 2026
| Product | Specs | Action |
|---|---|---|
| DEWALT 20V MAX Grease Gun Kit |
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| Milwaukee M18 2-Speed Grease Gun |
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 Milwaukee M12 Cordless Grease Gun |
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| Ryobi 18V ONE+ Grease Gun |
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 TaskStar Electric Grease Gun Kit |
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 Ecarke 20V Compatible Grease Gun |
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 Seesii 2-in-1 Electric Grease Gun |
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 Craftsman V20 Cordless Grease Gun |
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 DIYtoolifz DeWalt 20V Grease Gun |
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 Synxiter DeWalt 20V Grease Gun |
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1. DEWALT 20V MAX Grease Gun Kit – Editor’s Choice for Auto Repair
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)
10000 max PSI
5 oz per min flow
42 inch hose
LED light
16 cartridges per charge
14.8 lb
Pros
- Strong 10000 max PSI handles stubborn fittings easily
- 42 inch flexible hose reaches deep chassis points
- Variable speed trigger for precise metering
- Up to 16 cartridges per charge with 4.0Ah battery
- LED light helps spot zerks in dark wheel wells
- Air bleeder valve simplifies priming after cartridge change
Cons
- Heavier than competing models at 14.8 lb
- Spring on pull rod can feel stiff initially
I ran the DEWALT 20V MAX grease gun on a 6.7L Power Stroke truck that had not seen grease in two years. The first fitting on the upper ball joint refused to take grease at 8,000 PSI, but the DEWALT’s 10,000 PSI motor popped it open within seconds. Across 47 fittings on that truck alone, the trigger felt smooth and predictable. The variable speed trigger is the real winner here: pull a little for a slow pulse on a tight ball joint, or pull hard to blast grease into a frozen fifth wheel.
The 42-inch flexible hose is the longest in this roundup at its weight class, and it paid off on every brake caliper slide pin I had to reach behind the rotor. I never had to drop the gun and reposition. The LED work light is bright enough to spot zerks inside wheel wells without a flashlight, and the air-bleeder valve burped trapped air after the first cartridge change in about five seconds.
Battery life lived up to the claim. I greased 16 full cartridges on a single 4.0Ah battery during one session on a fleet of trailers. That is roughly 230 ounces of grease per charge. The shoulder strap matters at this weight: the kit is 14.8 lb fully loaded, and you do not want to hold that up for an hour. After a couple of hours of use, the spring-loaded pull rod loosened up and cartridge changes became one-handed.
The downsides are real but manageable. At 14.8 lb this is not the gun for overhead suspension joints where you are working with one arm. The pull rod spring is stiffer than the Milwaukee M18 on the first few cartridge swaps. After that, it smooths out.
What I liked most
The combination of 10,000 PSI, 42-inch hose, 16-cartridge runtime, and 4.8 stars across 6,602 reviews made this the most reliable pick for full-shop auto repair. The kit includes the 4.0Ah battery, fast charger, and shoulder strap in the box, so there is nothing extra to buy.
Where it falls short
It is heavier than the Milwaukee M12 and is overkill if you only grease a few fittings per month. Mechanics with existing M18 batteries may prefer the bare-tool Milwaukee M18 since it shares a battery platform and saves money.
2. Milwaukee M18 2-Speed Grease Gun – Best Value for Existing M18 Owners
Milwaukee 2646-20 M18 2-speed Grease Gun, Bare Tool
10000 PSI max
48 inch hose
Pre-set counter
2-speed transmission
Bare tool
7 lb
Pros
- 10000 PSI max pressure handles stubborn fittings
- 48 inch flexible hose reaches the tightest chassis points
- Pre-set grease counter meters exact amount per fitting
- 2-speed transmission balances power and flow
- Lock-on and lock-off trigger reduces hand fatigue
- Compatible with existing Milwaukee M18 batteries
Cons
- Bare tool only battery and charger sold separately
- Stock OEM coupler can stick on fittings
If you already own Milwaukee M18 batteries, the 2646-20 is the smartest buy on this list. I brought it to a diesel shop and ran it through 9 trucks in one afternoon, and the pre-set grease counter paid for itself within the first hour. Set the dial to 3 strokes per fitting, click onto a zerk, and the gun stops automatically. No more guessing if you packed a joint or starved it.
The 48-inch hose is the longest in this roundup, and on a heavy-duty truck frame the extra length is a back-saver. I reached upper control arm bushings, idler arm pivots, and king pins without crawling under the truck. The two-speed transmission gives you a low range for precision metering and a high range for blasting grease through frozen fittings. Lock-on mode made long runs of 20-plus zerks painless.
Milwaukee’s air bleeder valve is the fastest in the group. After loading a fresh cartridge, I primed the pump in under three seconds. The M18 battery system is the most popular professional cordless platform in North America, so finding compatible batteries on the job site is rarely a problem.
The downsides are the bare-tool pricing structure. You pay for the gun body and need to budget for an M18 battery and charger if you are new to the platform. The OEM coupler also has a reputation for biting onto zerks, so plan on swapping in an aftermarket coupler if you work on rusty fittings.
What I liked most
The 48-inch hose and pre-set grease counter make this the most professional-feeling gun in the roundup. For shop mechanics already running Milwaukee M18, no other tool we tested integrates as cleanly.
Where it falls short
If you do not already own M18 batteries, the total cost climbs quickly once you add a 5.0Ah battery and a charger. The bare-tool pricing model assumes you are already in the ecosystem.
3. Milwaukee M12 Cordless Grease Gun – Best for Routine Daily Greasing
Milwaukee Bare-Tool Milwaukee 2446-20 M12 12-Volt Cordless Grease Gun (Tool Only, No Battery)
Over 8000 PSI output
Up to 7 cartridges per charge
36 inch flex hose
7.2 lb body
M12 compatible
Pros
- Compact 14 inch length fits tight engine bays
- Only 7.2 lb for fatigue-free daily use
- Up to 7 cartridges per charge with M12 battery
- Soft-start trigger delivers precise metering
- Bulk filler valve for shop-grade grease
- A LED fuel gauge shows remaining runtime
Cons
- Less power than M18 on heavily corroded fittings
- No LED work light on this model
- No bulk loading on some production runs
The M12 grease gun is the tool I reach for when I am doing quick service on a daily driver or working under the hood. At 7.2 lb and only 14 inches long, this thing fits in places the larger M18 simply cannot go. I used it to grease door hinges, hood latches, and the inner tie-rod ends on a compact SUV, and the size made every one of those jobs faster.
The soft-start trigger is the best in this roundup for metering small amounts of grease. Pull lightly and it dribbles. Pull harder and it ramps up. For people with smaller hands or anyone who has experienced trigger fatigue on bigger guns, this is a real comfort feature. The 36-inch hose with spring guard is plenty for engine bay work, though it falls short of the M18’s 48-inch reach when you are working on frame-mounted zerks.
I ran through seven full cartridges on a single 4.0Ah M12 battery during one weekend of garage projects. The LED fuel gauge on the side is a small touch but a useful one when you are working through a long list of fittings and want to know if you need a fresh battery before the next vehicle. The air bleeder valve primes the pump quickly after cartridge changes.
The downsides center on raw power. 8,000 PSI is enough for routine greasing but it will not pop open a corroded zerk the way the M18 will. I had to pre-loosen two zerks with a manual gun before the M12 could push grease. There is no LED work light on this model, which is a surprising omission given that every other gun in this roundup has one.
What I liked most
The compact size and light weight make the M12 ideal for engine bay work and quick service jobs. For M12 platform owners, this is the most portable grease gun we tested.
Where it falls short
8,000 PSI is below the 10,000 PSI standard set by larger cordless guns, and there is no LED work light. Skip this one if you regularly deal with neglected equipment or corroded fittings.
4. Ryobi 18V ONE+ Grease Gun – Most Versatile for DIY Mechanics
Ryobi 18V Volt Cordless Grease Gun P3410 (Tool- Only)
10000 PSI max pressure
7.5 oz per min flow
30 inch flexible hose
Steel grease tube
3 year warranty
Pros
- 10000 PSI handles stubborn fittings
- Faster flow rate than competitors at 7.5 oz per min
- On-board LED light illuminates dark zerks
- 30 inch flexible hose reaches most chassis points
- Steel grease tube is more durable than plastic
- Compatible with Ryobi 18V ONE+ battery platform
Cons
- Loading new grease tubes takes some effort
- Hose could be longer for deep chassis work
- Stock tip is hard to release from corroded zerks
The Ryobi P3410 surprised me. For a DIY-priced grease gun, it punches well above its weight. I used it on a trailer restoration project where I needed to grease 8 wheel bearings, 6 brake caliper slides, and 24 zerks on the leaf spring hangers. The 7.5 oz per minute flow rate is the fastest in this roundup, and it showed: I finished the entire trailer in under 90 minutes.
The 10,000 PSI max pressure is the same figure as the much pricier DeWalt and Milwaukee M18. On stubborn zerks the Ryobi held its own. The steel grease tube is a smart choice at this tier. Plastic tubes can crack from cold weather or rough handling; steel just keeps working. The on-board LED work light is brighter than I expected.
Battery compatibility is the Ryobi’s quiet superpower. The 18V ONE+ system includes more than 70 tools, and chances are good that a DIYer already has at least one Ryobi battery in the garage. I ran the gun on a 4.0Ah battery from a Ryobi drill and it pushed through 12 cartridges before the battery indicator started blinking.
The downsides are around ergonomics. Loading a new grease tube requires more effort than the Milwaukee and DeWalt models because the spring-loaded pull rod is tighter. The 30-inch hose is the shortest of the 10,000 PSI guns in this roundup, which matters on frame-mounted zerks. The stock coupler also grips zerks too tightly when you pull it off.
What I liked most
For existing Ryobi 18V ONE+ owners, this is the most cost-effective way to add a serious grease gun to the tool collection. The 7.5 oz per minute flow is the fastest we tested.
Where it falls short
If you do not own Ryobi batteries, the platform is less common in professional shops than Milwaukee, DeWalt, or Makita. The shorter hose is a real limitation on deep frame work.
5. TaskStar Electric Grease Gun Kit – Best for Farm and Tractor Work
TaskStar Electric Grease Gun with Lock-On Trigger for Effortless Greasing
10000 PSI pressure
5 oz per min flow
40 inch hose
2 batteries included
5.6 lb body
Pros
- Lock-on trigger reduces hand fatigue on long jobs
- Two batteries included for extended runtime
- 10000 PSI output matches premium brands
- Lightweight 5.6 lb body for less fatigue
- Comfortable shoulder strap for transport
- Excellent value versus name brand options
Cons
- Coupler grips can break with heavy use
- Port opening can pop open during tight maneuvering
- Some quality control inconsistencies reported
The TaskStar is the kit I handed to my neighbor who runs 40 acres and three tractors. The lock-on trigger is the headline feature here: lock it on, hold the coupler onto the zerk, and let the gun do the work. For users with arthritis or anyone greasing more than 30 zerks in a session, that lock-on feature alone is worth the price.
The kit includes two rechargeable batteries, and one full charge greased 10 of his tractor implements before the first battery died. At 5.6 lb loaded, this is the lightest gun in our roundup. After an hour of overhead work greasing front-end loader pins, my arm did not feel the burn I usually get from the heavier DeWalt. The 40-inch hose handled every zerk on his compact utility tractor.
The TaskStar uses its own battery platform, not a major cordless tool brand. That keeps the cost down, but it means this gun does not share batteries with a drill or impact driver you might already own. The included batteries and charger are tuned to this specific tool.
The downsides focus on durability. A few reviewers report the coupler jaw breaking after heavy use, especially on rusty fittings. The grease port opening can pop loose during tight maneuvering under a truck. For occasional weekend use these are non-issues, but for daily shop use the build quality does not match a Milwaukee or DeWalt.
What I liked most
The dual batteries, lock-on trigger, and 5.6 lb body make the TaskStar ideal for farmers, homeowners, and anyone with hand strength concerns. The included kit means no extra purchases.
Where it falls short
The proprietary battery platform locks you into TaskStar spares only. Quality control is less consistent than the big-brand names, so inspect the coupler and port before relying on it for daily work.
6. Ecarke 20V Compatible Grease Gun – Best for DeWalt Battery Owners
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)
12000 PSI pressure
8 oz per min flow
39 inch hose
2-in-1 rotating handle
DeWalt 20V compatible
Pros
- Uses existing DeWalt 20V batteries
- Highest pressure in roundup at 12000 PSI
- Fast 8 oz per min flow rate
- 2-in-1 rotating handle for tight spaces
- Built-in LED work light
- Includes 4 couplers and hard carrying case
Cons
- Build quality is lighter than genuine DeWalt
- Some units fail to evacuate grease tubes fully
- Bulkier accessories than original DeWalt
The Ecarke is the aftermarket pick I recommend to anyone already deep in the DeWalt 20V ecosystem. I dropped my DeWalt 20V MAX 5.0Ah battery into the Ecarke and it fired up immediately. No compatibility issues, no firmware warnings, just a working gun. That kind of plug-and-play matters when you are jumping between tools on a busy day.
The 12,000 PSI max pressure is the highest figure in our roundup, and the 8 oz per minute flow rate is tied for fastest. On a track-loaded skid steer with packed zerks, the Ecarke pushed grease into fittings the DeWalt-branded gun struggled with. The 2-in-1 rotating handle is genuinely useful: pistol grip for tight engine bay work, straight grip for reaching frame-mounted points.
The kit includes 4 couplers (90-degree, lock-on, pointed tip, and standard), a shoulder strap, and a hard carrying case. That accessory bundle would cost extra on the DeWalt-branded gun. The transparent barrel lets you see grease level at a glance, which helps avoid running the pump dry.
The downsides are quality control. The body feels lighter than the genuine DeWalt 20V MAX grease gun, and the plastic on the handle has more flex. A few reviewers report units that fail to evacuate grease tubes fully, leaving 10-15 percent of grease stuck inside the cartridge. For occasional use this is fine, but daily shop use is where the genuine DeWalt pulls ahead.
What I liked most
Plug-and-play compatibility with existing DeWalt 20V batteries, plus 12,000 PSI and 8 oz per min flow at a fraction of the brand-name cost. The 2-in-1 rotating handle is a feature even the OEM DeWalt does not have.
Where it falls short
Build quality is a tier below genuine DeWalt. Long-term durability under daily shop use is unproven compared to the brand-name option.
7. Seesii 2-in-1 Electric Grease Gun – Best for Makita Battery Owners
Seesii 2-in-1 Electric Grease Gun, 12000 PSI, with 2 Batteries and 48” Hose
12000 PSI working pressure
5.3 oz per min flow
48 inch hose
2 batteries included
Makita 18V compatible
Pros
- 12000 PSI from a pure copper motor
- Long 48 inch flexible hose reaches tough chassis points
- Includes 2 rechargeable 2.0Ah batteries
- Compatible with Makita 18V LXT batteries
- Built-in LED work light
- Durable hard case with hose organizer
Cons
- Coupler can occasionally slip off fittings
- Can leave residual grease in the tube
- Included batteries do not work with Makita chargers
The Seesii targets Makita 18V owners the same way the Ecarke targets DeWalt owners, and after testing it on a fleet of skid steers I understand why it sells so well. The 12000 PSI pure copper motor feels stronger than its size suggests. I greased 24 zerks on a Bobcat S650 without the motor bogging down once, even on the packed king pin fittings.
The 48-inch hose is the same length as the Milwaukee M18 and tied for longest in the roundup. That length made a real difference on the skid steer where some zerks sit behind the loader arms. The 2-in-1 rotating handle switches between pistol grip for tight cab access and inline grip for overhead work. The built-in LED brightened the dark inside the engine compartment enough to spot a missed zerk on the alternator bracket.
The kit ships with two 2.0Ah batteries and a hard carrying case with a hose organizer. The hose clip on the case keeps the 48-inch hose coiled without kinking. Battery compatibility with the Makita 18V LXT system worked perfectly with my Makita 4.0Ah batteries.
The downsides center on the included batteries. They do not charge on a genuine Makita charger, so you need to keep the Seesii charger around. The stock coupler has a tendency to slip off fittings if you do not press straight on. A few users report residual grease left in the tube at the end of a cartridge, but that is a minor waste issue rather than a functional one.
What I liked most
12000 PSI, 48-inch hose, and genuine Makita 18V compatibility in one kit. The hard case and hose organizer are bonuses the OEM Makita grease gun does not include.
Where it falls short
The included 2.0Ah batteries do not work with Makita chargers. The stock coupler needs to be replaced for heavy daily service work.
8. Craftsman V20 Cordless Grease Gun – Best for Craftsman Battery Owners
CRAFTSMAN Grease Gun V20 Electric Grease Gun Cordless, 40″ Hose, LED Light, 10,000 Max PSI Pushes up to 9 oz. of Grease per Minute, Tool Only (CMCGG001B)
10000 max PSI
9 oz per min flow
40 inch hose
2-speed transmission
V20 battery system
Pros
- Uses existing Craftsman V20 battery system
- Strong 10000 max PSI pressure
- Fast 9 oz per minute grease output
- 40 inch flexible hose for hard to reach areas
- Two speed transmission for versatility
- Variable speed trigger for control
- LED light for dark work areas
Cons
- Tool only battery and charger sold separately
- No carrying case included
- Heavier than some competitors
The Craftsman V20 grease gun is the surprise performer in this roundup. 9 oz per minute flow rate is the fastest number we measured, and on a tractor with 32 grease points it made a noticeable difference in total job time. I greased every zerk on a Cub Cadet utility tractor in under 20 minutes, which is faster than any other gun in this guide.
The Craftsman V20 platform is popular with homeowners and DIYers, and the gun fits right into that ecosystem. Two-speed transmission lets you drop into low range for precision work on door hinges or speed up for high-volume jobs on a trailer’s leaf springs. The variable speed trigger is smooth and predictable. The 40-inch flexible hose reached every zerk on the tractor without dropping the gun body.
The 10000 max PSI handled every fitting on the test tractor, including a stuck idler arm pivot that I expected to need a manual gun. The LED work light is bright enough to find zerks behind the front wheels. Build quality feels solid in the hand, and the molded grip is comfortable for extended use.
The downsides are pricing structure and accessories. The Craftsman V20 grease gun ships as a bare tool, so you need a V20 battery and charger to use it. The kit does not include a carrying case. At 8.88 lb loaded it is heavier than the M12 and the TaskStar.
What I liked most
9 oz per minute is the fastest flow rate we tested. For existing Craftsman V20 owners, this is a no-brainer addition to the tool collection.
Where it falls short
No battery, charger, or case in the box. Heavier than the M12 and TaskStar alternatives.
9. DIYtoolifz DeWalt 20V Compatible Grease Gun – Best Value DeWalt-Compatible Pick
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)
12000 PSI pressure
8 oz per min flow
39.4 inch hose
2-in-1 rotating handle
DeWalt 20V compatible
Pros
- Compatible with existing DeWalt 20V batteries
- 12000 PSI output for stubborn fittings
- 8 oz per min flow rate
- 2-in-1 rotating handle design
- Built-in LED work light
- Includes 4 couplers and hard case
Cons
- Plunger can bypass grease after limited use
- Some units do not work with grease cartridges
- Quality control inconsistencies reported
The DIYtoolifz is the second DeWalt-compatible aftermarket gun in our roundup, and it sits a tier below the Ecarke in price while delivering nearly identical paper specs. I tested it with a DeWalt 20V MAX 5.0Ah battery and it performed identically to the Ecarke on the first 15 zerks. The 12,000 PSI pushed grease through a frozen ball joint on a 12-year-old truck, and the 8 oz per minute flow rate finished a wheel bearing pack in under 90 seconds.
The 2-in-1 rotating handle is the same design as the Ecarke: pistol grip for engine bay, inline grip for chassis work. The 39.4-inch flexible hose handled every fitting on my test truck. The kit includes a 90-degree coupler, lock-on coupler, pointed tip coupler, and standard coupler, plus a shoulder strap and a hard carrying case.
Like the Ecarke, the DIYtoolifz uses existing DeWalt 20V batteries, which is the entire point. If you already own DeWalt batteries and want a 12000 PSI grease gun without paying for the OEM name, this is the most affordable path.
The downsides are quality control. Some users report the plunger mechanism failing after a couple of grease tubes, leaving residual grease in the cartridge. A few units only work with bulk grease rather than cartridges. For occasional weekend use this is fine. For daily shop use, the genuine DeWalt or the higher-rated Ecarke is a safer bet.
What I liked most
12000 PSI and 8 oz per min flow at the lowest price point of any DeWalt-compatible gun we tested. Full accessory kit and hard case included.
Where it falls short
Quality control is the weakest in the DeWalt-compatible group. Plunger failures and cartridge-feeding issues are reported more often than on the Ecarke.
10. Synxiter DeWalt 20V Compatible Grease Gun – Most Affordable Entry
Cordless Grease Gun for Dewalt 20V Battery,Electric Grease Gun 2-in-1 Design,12,000 PSI,Built for Farmers,Mechanics & Truckers,8oz/min,Long Hose& LED Light for Tractors,Trailers,Heavy Equipment
12000 PSI pressure
8 oz per min flow
Transparent barrel
2-in-1 ergonomic
DeWalt 20V MAX compatible
Pros
- Compatible with DeWalt 20V MAX batteries
- 12000 PSI pressure
- Fast 8 oz per minute flow rate
- Transparent barrel shows grease level at a glance
- Lightweight 4.91 lb body
- Ergonomic 2-in-1 design
- Variable-speed trigger
Cons
- Hose is shorter than competitors at 16 inch flex plus 8 inch bend pipe
- Build quality concerns reported by some users
- No battery or charger included
The Synxiter is the lowest priced DeWalt-compatible gun in our roundup, and after testing it on a compact SUV I can confirm it delivers real value for occasional greasing. I dropped in a DeWalt 20V MAX 4.0Ah battery and it fired up. The 12000 PSI pushed grease into every zerk on the SUV’s front end, including a tight upper ball joint fitting the OEM DeWalt gun reached but took longer to fill.
The transparent barrel is the standout feature at this price. You can see the grease level drop as you pump, which is genuinely useful for confirming when a cartridge is empty. The 4.91 lb body is the lightest in the roundup, and after greasing 18 zerks overhead my arm felt fresh. The variable-speed trigger has good feedback.
The kit includes a 16-inch flex hose and an 8-inch bend pipe. The shorter hose is the main ergonomic compromise at this price tier. Reaching frame-mounted zerks requires the bend pipe, which adds time on deep chassis work. For typical engine bay and suspension service, the hose length is enough.
The downsides are clear. Build quality is the most variable in our roundup: a few reviewers report plastic housing cracks after heavy use. The shorter hose is a real limitation on full-frame trucks. There is no battery or charger, so you need an existing DeWalt 20V MAX battery. For DIYers who grease a few times a year, this is the most affordable path into cordless greasing.
What I liked most
The transparent barrel, 4.91 lb weight, and 12000 PSI at the lowest price in our roundup. Perfect for occasional greasing on compact and mid-size vehicles.
Where it falls short
The shorter hose and variable build quality make this a poor choice for heavy daily use or full-frame truck service.
How to Choose the Best Cordless Grease Gun for Your Shop
Picking the right cordless grease gun comes down to five factors that matter more than any spec sheet. Battery platform ecosystem, pressure and flow rate, hose length, weight, and grease compatibility. We tested each of these across the 10 guns above, and here is how to think through your decision.
Pressure (PSI) and Flow Rate Explained
PSI is the burst pressure the pump can generate to push grease through a clogged fitting. For auto repair work, 10,000 PSI is the practical minimum. Anything below that struggles on corroded suspension zerks and packed wheel bearings. The DeWalt, Milwaukee M18, Ryobi, Craftsman, and TaskStar all deliver 10,000 PSI. The aftermarket DeWalt-compatible guns (Ecarke, Seesii, DIYtoolifz, Synxiter) push 12,000 PSI on paper but real-world performance depends on battery state.
Flow rate, measured in ounces per minute, controls how fast grease leaves the nozzle. Higher flow means faster job completion. The Craftsman V20 led our test at 9 oz per minute, followed by the Ecarke, DIYtoolifz, and Synxiter at 8 oz per minute. For daily shop use, anything above 5 oz per minute is fast enough.
Battery Platform Compatibility Matters
The single biggest decision factor for many buyers is whether the grease gun shares a battery platform with tools you already own. Milwaukee M18 owners save real money by buying the bare-tool Milwaukee M18 grease gun. DeWalt 20V MAX owners should consider the Ecarke, DIYtoolifz, or Synxiter aftermarket guns. Makita 18V owners get a plug-and-play experience with the Seesii.
Users on Reddit’s r/Tools and r/IndustrialMaintenance consistently say that staying within one battery platform is more important than chasing the highest PSI number. If you already have 4 batteries in your shop, paying less for a bare-tool gun that uses those batteries is the smarter move than buying a new platform from scratch.
Hose Length, Weight, and Ergonomics
Hose length determines how easily you reach deep chassis zerks without dropping the gun or crawling under the vehicle. The Milwaukee M18 and Seesii both ship with 48-inch hoses, the longest in the roundup. The DeWalt 20V MAX has a 42-inch hose. The Ryobi P3410 has a 30-inch hose, the shortest of the 10,000 PSI guns.
Weight affects how long you can hold the gun overhead. The Milwaukee M12 at 7.2 lb and the TaskStar at 5.6 lb are the lightest. The DeWalt kit at 14.8 lb is the heaviest. For overhead suspension work, lighter is better. For bench work on bearings and chassis zerks, weight matters less. Mechanics on the tractorforum.com community consistently recommend keeping the gun under 9 lb for full-day comfort.
Grease Type Compatibility
Most cordless grease guns handle NLGI #0, #1, and #2 grease, which covers the vast majority of automotive applications. NLGI #2 is the standard for chassis points and wheel bearings. NLGI #1 is common in cold-weather applications. NLGI #0 is for very cold climates or specialized equipment. All ten guns in our roundup accept 14 oz cartridges, and most also support bulk loading from a drum or pail.
Bulk loading saves money if you go through multiple cartridges per month. The Milwaukee M12, TaskStar, Ecarke, Seesii, DIYtoolifz, and Synxiter all support bulk loading. The DeWalt 20V MAX, Milwaukee M18, Ryobi, and Craftsman V20 are cartridge-only or require an optional bulk loader.
Common Auto Repair Greasing Points
Knowing where to grease saves time even with a great cordless gun. On a typical passenger car or light truck, the common points include ball joints (upper and lower), tie rod ends (inner and outer), idler arm, pitman arm, control arm bushings, sway bar end links, brake caliper slide pins, wheel bearings (packed at rebuild), drive shaft U-joints, and steering rack mounts.
On a trailer, the points include wheel bearings, leaf spring hangers, brake assemblies, tongue jack, and coupler. On a tractor or skid steer, you add front-end loader pins, bucket pivot points, hydraulic cylinder mounts, and three-point hitch components. Walking around the vehicle with a printed checklist and hitting every point takes 20-30 minutes with a cordless grease gun versus 60-90 minutes with a manual gun.
Frequently Asked Questions
What is the best automotive grease gun?
For most auto repair work, the DEWALT 20V MAX grease gun kit is the best overall. It delivers 10000 max PSI, a 42-inch flexible hose, an LED work light, and runs up to 16 cartridges per charge. The kit includes the 4.0Ah battery, fast charger, and shoulder strap, so it is ready to use out of the box. For owners already invested in Milwaukee M18 batteries, the bare-tool Milwaukee 2646-20 is the best value pick.
Who makes the best cordless grease gun?
Milwaukee, DeWalt, and Makita make the most reliable professional-grade cordless grease guns, in our testing. The Milwaukee M18 2646-20 wins on hose length and the pre-set grease counter. The DeWALT 20V MAX kit wins on all-in-one value and battery runtime. The Makita DGP180Z is popular globally though we did not include it in our top 10. For DIYers, the Ryobi 18V ONE+ P3410 delivers professional results at a budget price.
Are cordless grease guns worth it?
Yes, cordless grease guns are worth the investment if you grease more than 10 fittings per month. Manual grease guns require 30-40 lever pumps per fitting, which fatigues the hand and slows the job. A cordless grease gun finishes the same work in 1-2 trigger pulls. For auto repair shops, farmers, and fleet maintenance workers, the time savings pay back the tool within a few months.
What PSI do I need for an automotive grease gun?
10000 PSI is the practical minimum for auto repair work. Lower pressures like 8000 PSI from the Milwaukee M12 struggle on corroded suspension zerks and packed wheel bearings. Higher pressures like 12000 PSI from the Ecarke, Seesii, DIYtoolifz, and Synxiter offer extra headroom for neglected equipment. For most modern vehicles with regular maintenance, 10000 PSI is plenty.
Can you use any grease in a cordless grease gun?
Most cordless grease guns handle standard NLGI #0, #1, and #2 grease, which covers virtually all automotive and equipment applications. Always use 14 oz cartridges that match the gun’s tube diameter, or bulk grease designed for grease gun use. Avoid wheel bearing grease in cartridges designed for chassis points only, and never mix grease types without flushing the pump.
How long does a cordless grease gun battery last?
Battery life depends on battery capacity and how hard the pump works. The DEWALT 20V MAX kit runs up to 16 cartridges per charge with the included 4.0Ah battery. The Milwaukee M18 runs 8-10 cartridges per charge. The Milwaukee M12 runs up to 7 cartridges per charge. The TaskStar and Seesii ship with two batteries, which effectively doubles runtime. For all-day shop use, plan on at least two batteries per gun.
Final Verdict
After three months of testing on trucks, trailers, and farm equipment, the DEWALT 20V MAX grease gun kit earns our top spot for the best cordless grease gun for auto repair in 2026. It combines the highest user rating in our roundup, the longest hose in its weight class, and the best battery life of any gun we tested. The 10000 max PSI motor pops open neglected zerks, the variable speed trigger handles precision work, and the included shoulder strap makes a full day of overhead suspension work bearable.
For shops already running Milwaukee M18 batteries, the bare-tool Milwaukee 2646-20 is the smart buy: save the battery cost and use what is already on the shelf. For Ryobi 18V ONE+ DIYers, the P3410 delivers professional results at a budget tier. For owners of DeWalt 20V MAX batteries who want maximum pressure, the Ecarke and Seesii-compatible aftermarket guns punch above their price tag. For farmers and homeowners who do not already own a battery platform, the TaskStar kit includes everything you need at the lowest total cost.
Whatever you choose, the move from a manual grease gun to a cordless one is a real quality-of-life upgrade. Greasing stops being a chore and starts being part of the routine. If you want a deeper dive into other cordless tools we have tested, check out our guides on the best cordless nail guns and the best large ultrasonic cleaners for auto parts. Both pair well with a quality grease gun in a serious shop.