Cordless vs Corded Grease Gun: Which Should You Buy?
Cordless vs corded grease gun: when battery power wins, when a corded gun makes sense, and four cordless models compared on pressure, flow, hose and loading.
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Top picks at a glance
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Cordless Heat Gun Compatible with Dewalt 20v Battery9.7/10View on Amazon - 2
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DEWALT Grease Gun Kit 20V MAX with 4.0Ah Battery and Charger9.6/10View on Amazon - 4
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Macnaught Heavy Duty Pistol Grip Grease Gun with 10 YrView on Amazon
A Saturday grease job: the truck is up on stands, the zerks on the idler arm are buried, and the manual grease gun needs two hands where you only have one free. That is the job that starts the cordless vs corded grease gun question, and the short answer is this: cordless wins for most home garages because you can take the gun to the fitting instead of dragging a cord or an air hose across the floor, while a corded electric gun makes sense only if you grease at a bench near an outlet and never want to think about batteries.
More options to compare
Workforce Mini Grease GunCheck price on Amazon
MILTONCheck price on Amazon
Lincoln 1142 Lever Action Grease GunCheck price on Amazon
Macnaught Heavy Duty Pistol Grip Grease Gun with 10 YrCheck price on Amazon
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Below: how cordless and corded grease guns differ, when each one wins, four cordless models from the listings ranked, and answers to the questions garage owners ask before buying.
Cordless vs corded grease gun: how they differ
A cordless grease gun runs on a tool battery, usually 18V or 20V, and carries its own power to the fitting. A corded electric grease gun plugs into the wall and runs as long as the outlet holds out. Both do the same job: they push grease through a hose and coupler into a zerk fitting under thousands of PSI. The difference is where the power comes from and what that costs you in reach, runtime and setup.
| Cordless | Corded electric | |
|---|---|---|
| Power source | Tool battery, 20V class | Wall outlet |
| Reach | Goes anywhere the gun fits | Limited by cord length |
| Runtime | Ends when the battery does; swap packs to continue | Runs indefinitely |
| Setup | Grab the gun and go | Find an outlet, manage the cord |
| Best for | Driveway and farm work, tight spots | Bench or bay work near power |
When cordless wins
Most home garage grease jobs happen away from the bench: under a truck, behind a mower deck, around farm equipment. A cordless gun goes there with you, and the listings here show why the format took over: up to 12,000 PSI max, flow rates to 9 oz per minute, and hoses around 39 to 40 in for reaching buried zerks. If you already own the batteries, a bare tool drops into your kit; the Ecarke and DIYtoolifz listings state compatibility with DeWalt 20V packs, and the CRAFTSMAN runs on the V20 system.
When corded wins
A corded gun never asks for a charged battery. If every grease job happens in the same bay within cord reach of an outlet, a corded gun is one less battery to manage. The trade is mobility: the cord sets the work radius, and cords plus greasy floors are a nuisance. None of the four listings here is a corded gun, which tells you where the market went, but the format still suits a fixed workstation.
Gear: four cordless grease guns, ranked
Every listing below is a cordless grease gun, ranked from the most complete kit to the thinnest listing. All four are sold as bare tools: batteries and chargers are not included, so match the gun to the battery platform you already own.
1. Ecarke 20V cordless grease gun
The most detailed listing here. It states 12,000 PSI max with 3-speed adjustable flow at 5.3, 7 and 8.8 oz per minute, a 39 in hose, and dual loading for standard 14 oz cartridges or bulk grease in NLGI #0, #1 and #2. It works with DeWalt 20V batteries, DCB200, DCB201 and DCB203 through DCB206 listed, and ships with four couplers, a shoulder strap and a hard plastic carrying case. The item weight is 11.58 lb, and the listing notes a little grease residue on arrival is normal.
2. DIYtoolifz 20V grease gun
Nearly as complete: 12,000 PSI, 8 oz per minute flow, a 39.4 in hose, and the same dual loading, 14 oz cartridges or bulk, NLGI #0, #1 and #2. It states compatibility with DeWalt 20V packs and recommends a 4.0Ah or higher battery for full pressure. The extras match the Ecarke: four couplers (90 degree, lock-on, pointed tip, standard), a shoulder strap and a hard carrying case, plus a 2-in-1 rotating handle and an LED work light. Materials are listed as aluminum, metal and plastic.
3. CRAFTSMAN V20 grease gun
The brand-name pick: 10,000 PSI max and up to 9 oz per minute on the V20 battery system, with a 2-speed transmission, a 40 in hose and an LED light. It is a tool-only listing, model CMCGG001B, weighing 8.88 lb. The listing is thinner on kit details than the two above: no coupler count or loading type is stated, so check the box contents before counting on it for cartridge and bulk work.
4. Milwaukee M18 grease gun
The M18 2-speed grease gun, tool only, No. 2646-20. The listing states the platform and the 2-speed format, an item weight of 9.33 lb and package dimensions of 20 by 10 by 4.5 in, and little else; the bullets carry no usable detail. Buy it for the M18 system you already own, not for the listing.
A grease gun makes thousands of PSI, and a pinhole leak or a loose coupler can inject grease through skin. Keep hands and body clear of the coupler and hose while the gun is pressurized, and point the coupler at the fitting, not at yourself.
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.
Frequently Asked Questions
Can I use my DeWalt 20V batteries on a third-party grease gun?
The Ecarke listing states compatibility with DeWalt 20V packs DCB200, DCB201 and DCB203 through DCB206, and the DIYtoolifz states compatibility with DCB204, DCB205 and similar packs, recommending 4.0Ah or higher for full 12,000 PSI pressure. Both are sold as bare tools, so the battery and charger come from your own kit. Compatibility is stated by the maker; it is not the same as a DeWalt-made tool.
How much pressure does a grease gun need?
The listings here state 12,000 PSI max on the Ecarke and DIYtoolifz and 10,000 PSI max on the CRAFTSMAN. Higher max pressure helps with stiff or clogged zerks; normal greasing uses far less.
Cartridge or bulk grease?
The Ecarke and DIYtoolifz accept both: standard 14 oz cartridges or bulk grease, in NLGI #0, #1 and #2 grades. Cartridges are cleaner to load; bulk suits heavy use. The CRAFTSMAN and Milwaukee listings do not state their loading type, so confirm before buying bulk.
What does the flow rate tell me?
Flow rate is how fast the gun moves grease: the Ecarke lists 3 speeds at 5.3, 7 and 8.8 oz per minute, the DIYtoolifz lists 8 oz per minute, and the CRAFTSMAN pushes up to 9 oz per minute. Higher flow fills a joint faster; lower flow gives more control on small fittings. The Milwaukee listing states no flow rate.
What couplers do I need?
The Ecarke and DIYtoolifz each include four: a 90-degree coupler for tight spaces, a lock-on coupler, a pointed tip and a standard coupler. The 90-degree coupler earns its keep on buried zerks. The CRAFTSMAN and Milwaukee listings state no coupler details.
Related: best cordless grease gun, pneumatic vs electric grease gun, lever vs pistol grease gun, best grease gun for automotive, and types of grease gun.
