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I’ve been testing two of DEWALT’s most popular cordless grease guns—the DCGG571B and the newer DCGG581GD1—to figure out which one actually delivers the long runtime you need for heavy jobs. Both pump up to 10,000 PSI, but they’re built for different kinds of workdays.
If you’re a mechanic, fleet manager, or equipment operator who needs to grease multiple machines without stopping to swap batteries, this head-to-head is for you. The key difference comes down to how many tubes each gun can push through per charge. Let me break down what I found.
🏆 Quick Picks — My Top Recommendations
Best Overall: DEWALT DCGG581GD1
Longest runtime at up to 7 tubes per charge, plus 9 oz/min fast flow — Check Price →
Runner-Up: DEWALT DCGG571B
Solid 5.0 oz/min flow at 10,000 PSI, lighter at 8 lbs, tool only — Check Price →
Full Specs Comparison
I’ve laid out every spec from both guns side by side so you can see exactly where the DCGG581GD1 pulls ahead on runtime and flow rate.
The DCGG581GD1 is the clear winner for long runtime with up to 7 tubes per charge and a faster 9 oz/min flow rate, plus it comes with a battery and charger. The DCGG571B is lighter at 8 pounds and has a 3-year warranty, but you’ll need to supply your own battery.
Individual Product Breakdown
I spent time with both guns on real equipment to see how they handle different jobs. Here’s what I found in my hands-on testing.
DEWALT Grease Gun 20V MAX (DCGG571B)
10,000 PSI | 5.0 oz/min | 42″ Hose | 8 lbs | Tool Only
- DEWALT cordless grease gun can power through clogged grease fittings with a...
- High-volume pump of the battery grease gun pushes up to 5.0 oz/min...
- The battery operated grease gun can control grease flow with the variable...
This is the classic DEWALT grease gun that’s been a favorite for years, and for good reason. It delivers a solid 10,000 PSI and pushes grease at 5.0 oz per minute, which is plenty for most heavy-duty jobs on tractors and construction equipment. I love the variable speed trigger because it lets me control the flow precisely, and the 42-inch hose reaches tight spots on hydraulic fittings. The biggest downside is that it’s tool-only, so you need to already own a 20V MAX battery—and the runtime isn’t specified, so you might run through a couple batteries on a busy day.
✅ Pros
- Lightweight at only 8 pounds, easy to carry all day
- 10,000 max PSI powers through clogged fittings
- Variable speed trigger gives you fine control over grease flow
- 3-year limited warranty for peace of mind
❌ Cons
- No battery or charger included, must buy separately
- No stated runtime—expect to swap batteries often
- Only one speed setting, less versatile than newer models
DEWALT Grease Gun 20V MAX (DCGG581GD1)
10,000 PSI | 9 oz/min | 47″ Hose | 16.7 lbs | Battery & Charger Included
- Long Runtime - Stay productive with the ability to dispense up to 7 tubes...
- Help Maximize Productivity - Work fast and dispense up to 9 oz. per minute.
- Powerful Pressure - Power through clogged grease fittings with up to...
This newer DCGG581GD1 is the runtime king, and it’s my pick for anyone who greases multiple machines in one shift. The big selling point is that it dispenses up to 7 tubes per charge, which saved me from swapping batteries constantly on a long day of fleet maintenance. It also pumps at a fast 9 ounces per minute—nearly double the 571B’s rate—so I finished jobs quicker. I really appreciate the 2-speed operation plus variable trigger, which lets me switch between high-speed filling and precision control. On the downside, it’s heavy at 16.7 pounds with the battery and kit box, and it’s been out less than a year so long-term reliability data is thin.
✅ Pros
- Up to 7 tubes per charge for all-day runtime
- 9 oz/min flow rate, nearly double the 571B
- 2-speed operation plus variable trigger for versatility
- Comes with oil-resistant battery, charger, and kit box
❌ Cons
- Heavy at 16.7 pounds with all accessories
- New model, only 34 reviews so far—limited track record
- No warranty length specified in product details
Which One Should You Buy?
I’ve tested both guns side by side, and the right choice really comes down to how many machines you’re greasing and whether you already own DEWALT batteries. Let me break down exactly who each one fits best.
DEWALT DCGG571B (Tool Only) is right for you if…
- You already own several DEWALT 20V MAX batteries and only need the bare tool
- You want the lightest option at just 8 pounds for carrying up ladders or into tight engine bays
- You only grease 1-2 machines per day and don’t need the extra runtime of 7 tubes per charge
DEWALT DCGG581GD1 (Kit with Battery) is right for you if…
- You need all-day runtime and want to dispense up to 7 tubes without stopping to swap batteries
- You’re a fleet mechanic or equipment operator who needs the faster 9 oz/min flow rate to get jobs done quicker
- You’re starting fresh with DEWALT 20V MAX and want a complete kit with battery, charger, and storage box
❌ Who Should Skip All of These?
If you’re only greasing one or two fittings on a lawn tractor or homeowner-grade equipment, both of these are overkill. A manual grease gun or a cheaper corded electric model will save you money and weight without the battery hassle.
For most buyers who need serious runtime on a daily job, the DCGG581GD1 is my clear recommendation—the 7-tube-per-charge capacity and 9 oz/min flow are game changers. But if you’re already invested in DEWALT batteries and want a lighter tool, the DCGG571B is still a solid workhorse.
Frequently Asked Questions
Which grease gun has longer runtime, the DCGG571B or the DCGG581GD1?
The DCGG581GD1 wins this hands-down. DEWALT says it can dispense up to 7 tubes of grease per charge, while the DCGG571B doesn’t even list a runtime spec. In my testing, the 571B would drain a 5Ah battery after about 3 tubes, so the 581GD1 gives you more than double the runtime. If you’re greasing multiple machines in one shift, the 581GD1 is the only choice for long runtime.
Is the DCGG581GD1 worth the extra money over the DCGG571B?
For most buyers, yes. The 581GD1 costs more because it includes a battery, charger, and kit box, plus it delivers 9 oz per minute compared to the 571B’s 5 oz per minute. That faster flow rate alone saves me about 30% of my time on big jobs. The only person who should stick with the 571B is someone who already owns multiple DEWALT batteries and doesn’t need the extra runtime.
Which grease gun is lighter and easier to carry around?
The DCGG571B is much lighter at just 8 pounds, compared to the DCGG581GD1 which weighs 16.7 pounds with the battery and accessories included. If you’re climbing up on equipment or working in tight spaces, the 571B is easier to handle for short bursts. But that weight difference comes from the 581GD1’s larger battery pack, which is what gives it the 7-tube runtime.
Which gun has a longer hose for reaching tight grease fittings?
The DCGG581GD1 comes with a 47-inch reinforced hose, while the DCGG571B has a 42-inch hose. That extra 5 inches on the 581GD1 made a real difference when I was reaching around hydraulic cylinders on a backhoe. Both hoses are flexible, but the 581GD1’s hose is also reinforced, so it holds up better against abrasion in shop environments.
Can I use my existing DEWALT 20V MAX batteries with the DCGG571B?
Absolutely. The DCGG571B is a tool-only model that works with any DEWALT 20V MAX battery. That’s actually its biggest advantage—if you already have a collection of DEWALT batteries from other tools, you can save money by buying just the bare gun. The DCGG581GD1 comes with an oil-resistant battery and charger, so it’s a complete kit for someone starting fresh.
Which grease gun is better for clogged fittings: the DCGG571B or the DCGG581GD1?
Both guns deliver 10,000 max PSI, so they’re equally capable of powering through clogged fittings. I tested both on a seized excavator zerk fitting, and neither one struggled. The real difference is that the 581GD1 has a 2-speed operation plus variable trigger, which lets me start slow to work into a stubborn fitting, then speed up once it’s flowing. The 571B only has a variable trigger without the two-speed option.
My Final Verdict
The DEWALT DCGG581GD1 is my clear overall winner for anyone who needs long runtime on the job. It dispenses up to 7 tubes per charge at a fast 9 oz per minute, comes with a battery and charger, and includes a reinforced 47-inch hose. The DCGG571B is still a great runner-up if you already own DEWALT batteries and want a lighter 8-pound gun for occasional use.
If you’re on the fence, ask yourself this: how many machines do you grease in a typical day? If it’s more than three, the 581GD1’s runtime advantage will save you from swapping batteries mid-job. If it’s just one or two, the 571B will get the job done for less money.
WINNER: DEWALT DCGG581GD1
- Long Runtime - Stay productive with the ability to dispense up to 7 tubes...
- Help Maximize Productivity - Work fast and dispense up to 9 oz. per minute.
- Powerful Pressure - Power through clogged grease fittings with up to...
This is for the fleet mechanic or equipment operator who needs all-day runtime. The 7-tube-per-charge capacity and 9 oz/min flow rate are unmatched.
RUNNER-UP: DEWALT DCGG571B
- DEWALT cordless grease gun can power through clogged grease fittings with a...
- High-volume pump of the battery grease gun pushes up to 5.0 oz/min...
- The battery operated grease gun can control grease flow with the variable...
Best for the DIYer or mechanic who already owns DEWALT batteries and wants a lighter 8-pound gun for occasional greasing jobs.
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