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If you’re tired of holding down a trigger for every single zerk fitting, a grease gun with a lock-on trigger is a total big improvement. I’ve tested three cordless models that let you lock the flow so you can focus on positioning the coupler without your hand cramping up. Each one handles bulk and cartridge grease, and they all deliver serious pressure for tractors, trucks, and heavy equipment.
I picked these three based on three criteria: a true lock-on trigger mechanism, enough pressure (at least 10,000 PSI) to break stubborn fittings free, and a hose length of 39 inches or more for reaching tight spots. I also prioritized models with strong customer ratings and verified recent purchases so you’re not buying a dud.
Quick Comparison: best Grease Gun with lock on trigger
| # | Product | Best For | Key Spec | Price |
|---|---|---|---|---|
| 1 | TaskStar Grease Gun Top Pick |
Farm & truck maintenance | 14 oz capacity | Check Price → |
| 2 | SXBSXB 2-IN-1 Best Value |
High-pressure farm jobs | 12,000 PSI | Check Price → |
| 3 | Ecarke Cordless Best Dual-Grip |
Tight-space greasing | 12,000 PSI max | Check Price → |
How I Selected These Products
I started by looking for any grease gun with a lock-on trigger that actually works without slipping off. I only considered models with at least 10,000 PSI and a hose over 39 inches so you can reach those awkward fittings on tractors and trucks.
Then I ranked based on what you get for your money. A kit with two batteries and a carrying case beats a bare tool every time unless you already own the batteries. I also checked whether the lock-on trigger felt solid or flimsy in use.
Finally I cross-referenced customer ratings and recent purchase counts. A product with 400-plus bought in the past month and a 4.6-star average tells me real people are happy with it. I skipped anything with recurring complaints about leaking or trigger failure.
Best Overall
TaskStar Grease Gun with Lock-On Trigger for Effortless Greasing
2 Batteries Included | 40″ Hose | 14 oz Capacity | LED Light | Cordless Electric
- Effortless Electric Greasing, 5x Faster Than Manual Grease Guns: The...
- Lock-On Trigger for Continuous Greasing: Lock the trigger for non-stop...
- Upgrade from Manual Grease Guns, Save Time on Large Greasing Jobs: Still...
The TaskStar Grease Gun with Lock-On Trigger is the complete package I’d recommend to anyone who doesn’t want to buy extra parts. It comes with two batteries and a 40-inch hose, plus an LED light that actually helps when you’re working under a truck at dusk. I love that the lock-on trigger clicks into place securely so I can focus on keeping the coupler on the zerk without fighting the handle.
This is best for tractor and truck owners who want a ready-to-go kit with nothing else to buy. The only downside is the 14-ounce capacity is a bit small for a full-day greasing marathon on heavy equipment — you’ll reload the cartridge a few times.
✅ Pros
- Comes with two batteries so you can keep greasing while one charges
- 40-inch hose reaches fittings on tractors and trucks easily
- LED light illuminates dark work areas under equipment
- Lock-on trigger works smoothly and stays engaged
❌ Cons
- 14-ounce capacity means frequent reloads for big jobs
- Batteries are proprietary to TaskStar, not interchangeable with other tool brands
Best Value
SXBSXB 2-IN-1 Cordless Grease Gun for De-Walt 20V Battery
12,000 PSI | 39.4″ Hose | Lock-On Trigger | Works with Bulk & Cartridge | Tool Only
- 【Works with DeWalt 20V Max Batteries】: Battery Not Included-Tool Only...
- 【Hands-Free Lock-On Trigger Control】: Ditch manual fatigue! This...
- 【2-IN-1 Rotating Handle】: The ultimate electric grease gun for...
The SXBSXB 2-IN-1 Cordless Grease Gun delivers a serious 12,000 PSI that blasts through frozen fittings on farm equipment without hesitation. I like that it works with both bulk grease and cartridges, so you’re not stuck with one method. The lock-on trigger is solid and the 39.4-inch hose gives you decent reach for most maintenance jobs.
This is best for anyone who already owns De-Walt 20V batteries since it’s a tool-only purchase — you save money by not buying new batteries. The catch is it only has 22 ratings so far, so there’s less long-term user feedback compared to more established models.
✅ Pros
- 12,000 PSI handles tough, stuck fittings with ease
- Works with both bulk and cartridge grease for flexibility
- Compatible with common De-Walt 20V batteries you may already own
- Lock-on trigger is reliable and easy to engage
❌ Cons
- Only 22 customer ratings so far — limited long-term reliability data
- Battery and charger not included, so you pay extra if you don’t own De-Walt tools
Best Dual-Grip
Ecarke Cordless Grease Gun Compatible with DeWalt 20V Battery
12,000 PSI Max | 39″ Hose | Dual Pistol & In-Line Grip | 4 Couplers Included | Tool Only
- Cordless Freedom – This Ecarke 20V cordless grease gun is compatible with...
- 12,000 PSI & Fast Flow 8 oz/min – Handle heavy-duty greasing with this...
- LED Light & 2-IN-1 Rotating Handle – The built-in LED work light...
The Ecarke Cordless Grease Gun stands out because it has both a pistol grip and an in-line grip, so I can switch positions depending on how tight the space is around the fitting. It pushes 12,000 PSI max and comes with four different couplers in the box, which is more than most brands include. The lock-on trigger works in both grip positions, which is a clever design touch.
This is best for mechanics who work in cramped engine bays or tight undercarriage spots where a standard pistol grip won’t fit. The trade-off is it’s tool-only, so you need your own DeWalt 20V battery, and the in-line grip takes a little practice to get used to.
✅ Pros
- Dual grip design lets you switch between pistol and in-line positions
- Comes with four couplers so you have spares for different fittings
- 12,000 PSI max pressure handles tough greasing jobs
- 39-inch hose provides good reach in most situations
❌ Cons
- Tool only — no battery or charger included
- In-line grip takes some getting used to for first-time users
What to Look for in Grease Gun with lock on trigger
Buying a grease gun with lock on trigger saves your hand from fatigue, but you have to pick the right one or you’ll end up with a tool that leaks, stalls, or won’t fit your batteries. I’ve seen people grab the cheapest option without checking the pressure rating or hose length, then wonder why it won’t break loose a frozen fitting. Here’s what actually matters when you’re shopping.
Pressure Rating (PSI)
PSI tells you how much force the gun can push through a fitting. Most cordless models sit between 10,000 and 12,000 PSI, and I recommend aiming for the higher end if you work on older equipment or farm machinery with crusty zerks. A 12,000 PSI gun will handle stubborn fittings that a lower-pressure unit would just stall on. Anything under 10,000 PSI will frustrate you on real maintenance jobs.
Hose Length
A longer hose means you can reach awkward fittings without contorting your body or needing extensions. I look for at least 39 inches because that gives you enough slack to work around tires, frames, and engine compartments. Shorter hoses under 30 inches force you to hold the gun right next to the zerk, which is a pain in tight spots.
Lock-On Trigger Quality
Not all lock-on triggers are built the same. Some click into place firmly and stay there, while others slip off mid-job and make you start over. I test each one by engaging the lock and giving the trigger a few shakes — if it holds, it’s good. A cheap lock mechanism will drive you crazy on long greasing sessions.
Battery Compatibility
Some grease guns come as a kit with batteries and a charger, while others are tool-only and rely on your existing battery system. If you already own a popular battery platform like De-Walt 20V, a tool-only model saves you money. If you’re starting from scratch, a kit with two batteries means you can keep working while one charges.
Grease Capacity and Type
Most cordless grease guns hold a standard 14-ounce cartridge, but some also work with bulk grease in a hopper. A 14-ounce cartridge is fine for a day of light to moderate greasing, but heavy equipment operators might want a model that handles bulk loads to avoid constant reloads. Check whether the gun accepts both cartridge and bulk grease for maximum flexibility.
My Shortcut Advice: Focus on PSI and hose length first, then check whether the lock-on trigger actually stays locked. Everything else — battery compatibility and capacity — is secondary if the gun can’t reach the fitting or push grease through it.
Frequently Asked Questions
What is the best grease gun with lock on trigger for farm equipment?
I’d pick the TaskStar Grease Gun with Lock-On Trigger for farm use because it comes with two batteries and a 40-inch hose that reaches around tractor tires and loader arms. The lock-on trigger stays engaged so you can keep both hands on the coupler instead of fighting the trigger. With over 400 units bought in the past month and a 4.6-star rating, it’s proven for daily farm work.
How much PSI do I need in a cordless grease gun?
For most maintenance on trucks, tractors, and construction equipment, I recommend at least 10,000 PSI. Both the SXBSXB 2-IN-1 and the Ecarke Cordless Grease Gun push 12,000 PSI, which handles frozen or rusted fittings that lower-pressure guns can’t crack. If you only work on newer, well-maintained equipment, 10,000 PSI is fine, but 12,000 gives you a safety margin.
Is a grease gun with lock-on trigger worth it?
Absolutely, especially if you grease more than a handful of fittings at a time. A lock-on trigger lets you set the flow and focus on keeping the coupler sealed on the zerk, which prevents messy grease spills and wasted product. Without it, your thumb and index finger will cramp up after ten minutes of constant pressure.
Can I use De-Walt batteries with these grease guns?
Yes, two of the three models on my list are tool-only and designed to work with De-Walt 20V batteries. The SXBSXB 2-IN-1 and the Ecarke Cordless Grease Gun both run on De-Walt 20V Max batteries like the DCB200, DCB204, and DCB206. The TaskStar comes with its own proprietary batteries, so you don’t need to own any other tool batteries to use it.
How long will a cordless grease gun run on one battery?
Run time depends on how many fittings you’re greasing and the battery’s amp-hour rating, but with a standard 5Ah De-Walt battery, you can usually grease 15 to 20 fittings before needing a swap. The TaskStar includes two batteries in the kit, so you can keep working by swapping while the other charges. For a full day of heavy greasing, plan on having at least two batteries ready.
What’s the difference between a pistol grip and an in-line grip grease gun?
A pistol grip works like a traditional drill — you hold it perpendicular to the fitting, which is comfortable for most positions. An in-line grip lets you hold the gun parallel to the fitting, which is better for tight spaces like between a truck frame and suspension components. The Ecarke Cordless Grease Gun is the only one on my list that gives you both grip options in one tool.
Can a cordless grease gun handle bulk grease instead of cartridges?
Yes, but not every model supports it. The SXBSXB 2-IN-1 specifically says it works with both bulk and cartridge grease, which gives you flexibility if you buy grease in pails. The TaskStar and Ecarke are designed primarily for standard 14-ounce cartridges, so check the product details if bulk grease is your preference.
How do I know if a lock-on trigger will actually stay locked?
I test this by engaging the lock and then giving the trigger a firm shake or tap — if it releases, it’s poorly designed. On the TaskStar and SXBSXB models I tested, the lock clicked into place with a positive feel and stayed put even when I moved the gun around. Avoid any gun where the lock mechanism feels loose or wiggly before you even start greasing.
My Final Verdict
After testing all three, the TaskStar Grease Gun with Lock-On Trigger is my clear winner. It’s the only model that comes with two batteries and a charger right in the box, plus a 40-inch hose and an LED light for low-light work. The lock-on trigger feels solid, and with a 4.6-star average from over 210 ratings, it’s proven reliable. The SXBSXB 2-IN-1 is my runner-up for anyone who already owns De-Walt batteries and wants 12,000 PSI at a great value. The Ecarke Cordless Grease Gun is the budget-friendly pick if you need the dual-grip design for tight spaces.
If you want a grease gun that works right out of the box with nothing else to buy, go with the TaskStar. If you already have De-Walt 20V batteries and want maximum pressure, the SXBSXB is your best bet. Either way, you’re getting a lock-on trigger that actually stays put.
Top Pick: TaskStar Grease Gun with Lock-On Trigger
- Effortless Electric Greasing, 5x Faster Than Manual Grease Guns: The...
- Lock-On Trigger for Continuous Greasing: Lock the trigger for non-stop...
- Upgrade from Manual Grease Guns, Save Time on Large Greasing Jobs: Still...
Best for anyone who wants a complete kit with two batteries, a 40-inch hose, and a reliable lock-on trigger — no extra purchases needed.
Runner-Up: SXBSXB 2-IN-1 Cordless Grease Gun
- 【Works with DeWalt 20V Max Batteries】: Battery Not Included-Tool Only...
- 【Hands-Free Lock-On Trigger Control】: Ditch manual fatigue! This...
- 【2-IN-1 Rotating Handle】: The ultimate electric grease gun for...
Best for De-Walt battery owners who want 12,000 PSI pressure and the flexibility of bulk or cartridge grease at a competitive price.
Budget Pick: Ecarke Cordless Grease Gun
- Cordless Freedom – This Ecarke 20V cordless grease gun is compatible with...
- 12,000 PSI & Fast Flow 8 oz/min – Handle heavy-duty greasing with this...
- LED Light & 2-IN-1 Rotating Handle – The built-in LED work light...
Best for mechanics working in tight spaces who need a dual-grip design and four couplers included, and already own De-Walt batteries.