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A cordless grease gun saves real time on any vehicle with zerk fittings. Manual pump guns work, but they’re slow and your hand gives out before the fittings are fully packed. A battery-powered gun delivers consistent pressure without the manual effort, and on trucks with 20+ chassis fittings, that difference adds up fast.
This guide covers the three best cordless grease guns in 2026 for home garage and light shop use. All of them accept standard 14-oz grease cartridges and follow-tube reservoir use. For related tool coverage, see our best cordless impact wrenches guide and the auto and garage tools hub.
Top Picks at a Glance
| Pick | Model | Platform | Max PSI | Buy |
|---|---|---|---|---|
| Best Amazon Pick | DeWalt DCGG571B 20V MAX | DeWalt 20V MAX | 10,000 PSI | Buy on Amazon |
| Best for M18 Users | Milwaukee M18 2646-20 | Milwaukee M18 | 10,000 PSI | Check at Home Depot |
| Compact M12 Option | Milwaukee M12 2446-20 | Milwaukee M12 | check specs | Check at Home Depot |
Note on Milwaukee links: Milwaukee is a Home Depot exclusive. The Milwaukee links above go to Home Depot, where we do not earn affiliate commission. If you’re not on M18 already, the DeWalt DCGG571B on Amazon is the right starting point.
Cordless Grease Gun Reviews
DeWalt DCGG571B: Best Amazon Pick
Price: $229 at time of writing | Platform: DeWalt 20V MAX | Max PSI: 10,000
The DCGG571B is DeWalt’s 20V MAX cordless grease gun, and it covers the standard use case well: 10,000 max PSI for driving through clogged or packed fittings, 5.0 oz/min flow rate for high-volume work, and a 42-inch flexible hose that reaches difficult-access fittings under trucks and through suspension components. The variable-speed trigger gives fine control on delicate fittings where over-greasing causes seal damage.
The integrated LED helps locate fittings under a vehicle in a dim garage — a small feature that genuinely saves time. An air-bleeder valve makes cartridge changes easier by venting air from the pump head after a swap. At $229 (tool only, no battery), it’s compatible with any DeWalt 20V MAX battery you already own.
Pros
- 10,000 PSI can break through clogged fittings
- 5.0 oz/min flow for fast high-volume lubrication
- 42-inch flexible hose for hard-to-reach fittings
- Uses existing DeWalt 20V MAX batteries
- LED work light and air-bleeder for convenience
Cons
- Tool only — batteries sold separately
- $229 is a significant investment for occasional use
| Spec | Value |
|---|---|
| Platform | DeWalt 20V MAX |
| Max PSI | 10,000 |
| Flow rate | 5.0 oz/min |
| Hose length | 42 inches (flexible) |
| Cartridge size | 14 oz standard |
| Warranty | 3-year limited |
Bottom line: The right cordless grease gun for anyone on the DeWalt 20V MAX platform or anyone starting fresh who wants an Amazon-available, in-warranty tool.
Milwaukee M18 2646-20: Best for Existing M18 Users
Platform: Milwaukee M18 | Max PSI: 10,000 | Retailer: Home Depot only
The Milwaukee M18 2646-20 is the grease gun for existing M18 users. Milwaukee is a Home Depot exclusive and we don’t earn commission on HD links — that said, if you already own M18 batteries, buying the Milwaukee over the DeWalt means one less battery ecosystem to manage. The 2646-20 delivers 10,000 PSI, two-speed operation (a lower speed for delicate fittings, higher for clogged ones), and the same 14-oz cartridge compatibility as all other cordless grease guns.
The Milwaukee Lifetime Service Agreement applies if you register the tool — free service and repair for the life of the tool for the original purchaser. That’s a meaningful long-term value differentiator over DeWalt’s 3-year warranty if you plan to keep it for 10+ years.
Pros
- Two-speed operation for fine control
- Lifetime Service Agreement (register for free service)
- Uses existing M18 batteries
- 10,000 PSI for clogged fittings
Cons
- Home Depot exclusive — not available on Amazon
- No commission benefit if you’re buying for the review
Bottom line: Buy this if you’re on M18. The Lifetime Service Agreement is a long-term value that offsets the higher cost for heavy users. If you’re starting from scratch, the DeWalt on Amazon is a simpler buy.
Milwaukee M12 2446-20: Compact Option for Light Use
Platform: Milwaukee M12 | Retailer: Home Depot only
The M12 version is smaller and lighter than the M18, which makes it easier to handle in tight quarters under a car or on a motorcycle. It’s the right pick if you’re already on M12 and mostly do light-duty greasing (a few fittings at a time, not an entire fleet). For a heavy-duty truck with 25 chassis fittings, the M18 or DeWalt is a better call — the M12’s smaller battery runs out faster under continuous load.
Check current pricing and specs at Home Depot, as availability and configuration can vary by region.
Pros
- Compact and lightweight for tight-space work
- Good for light-duty and occasional use
- Uses existing M12 batteries
Cons
- Smaller battery, shorter run time for high-fitting-count vehicles
- Home Depot only, not Amazon-available
Bottom line: Best if you’re already on M12 and do occasional light greasing. Upgrade to M18 or DeWalt for regular work on trucks with many fittings.
Buying Guide: Choosing the Right Cordless Grease Gun
Cartridge vs Follow Tube
All three grease guns here accept standard 14-oz grease cartridges (the pre-filled tubes you buy at any auto parts store) and also support a follow tube with bulk grease loaded in a fillable cylinder. For most home garage users, cartridges are the right choice — cleaner, faster to swap, and no mess. Follow tubes make sense for high-volume shop work where you’re going through multiple cartridges per week.
PSI: Do You Need 10,000?
Most standard zerk fittings on a clean, properly maintained vehicle open at 1,000-3,000 PSI. The 10,000 PSI rating matters when a fitting is clogged or impacted with old dried grease — higher pressure punches through the blockage. For a daily driver in good condition, any cordless grease gun applies enough pressure. For neglected vehicles or older trucks with frozen fittings, higher PSI is worth having.
Battery Platform: Start With What You Have
If you already own DeWalt 20V MAX or Milwaukee M18/M12 batteries, buy the grease gun for your platform. The battery cost ($50-$100 each) offsets the price difference between models if you’re buying batteries to go with it. Starting from scratch with no existing platform, the DeWalt DCGG571B on Amazon is the simplest path — widely available, in-warranty, and the 20V MAX ecosystem has more tool options than any other platform.
Grease Compatibility
All grease guns here use standard NLGI #2 multi-purpose grease, which is appropriate for most chassis, U-joint, and wheel bearing lubrication applications. Check your vehicle’s owner’s manual for specific grease type recommendations — some applications (certain CV joints, high-temp bearings) require a specific formulation. Standard black or red chassis grease cartridges work in all three guns listed here.
How We Research
Our Research Process
Product specs come from verified Amazon product listings (via Amazon Creators API) and manufacturer spec sheets. DeWalt pricing is current at time of writing — verify before buying as prices change. Milwaukee prices and availability are confirmed via Home Depot product listings; we don’t earn commission on HD links. We don’t accept payment for placement. Makita GPG01Z XGT 40V is excluded from this guide as it was not available through Amazon at time of writing — check Makita’s site for retailer availability.
FAQ
Is a cordless grease gun worth it?
For any vehicle with more than 5-6 chassis fittings, yes. Manual pump guns work but are slow and hard on your hands. A cordless gun does the same job in a fraction of the time. On a truck with 20+ fittings, the time difference is real: 5 minutes vs 30+ minutes.
Which cordless grease gun is best?
For Amazon availability: DeWalt DCGG571B. For existing Milwaukee M18 users: Milwaukee 2646-20 at Home Depot. Both deliver 10,000 PSI and comparable performance — the choice comes down to your battery platform.
What grease do cordless grease guns use?
Standard 14-oz grease cartridges, typically NLGI #2 multi-purpose chassis grease. Available at any auto parts store. All three grease guns in this guide accept the same 14-oz cartridge size.
How often should you grease chassis fittings?
Most manufacturers recommend every oil change, or every 3 months for vehicles in harsh conditions. Check your vehicle’s maintenance schedule — some modern vehicles have sealed joints that don’t require greasing at all.
Updated July 2026. Prices at time of writing. Milwaukee products are Home Depot-exclusive — links go to HD where we earn no commission. Verify current pricing and availability before buying.