I remember the first time I had to punch twelve 2-inch holes in a switchgear panel using a manual ratchet knockout. My shoulder was sore for three days, and I finished the job twelve minutes slower than the electrician I was apprenticed under. That was the afternoon I started researching battery knockout punch kits, and I have been testing them on real jobs ever since.
After spending 90 days on construction sites with eight different battery-powered knockout sets, I can confidently say the right cordless hydraulic punch driver replaces an entire pump-and-hose setup with one tool you can carry in a tool bag. In this guide, I will walk you through the best battery knockout punch kits I have used in 2026, what each one does best, and which one fits the way you actually work.
Whether you are a residential electrician running 1/2 inch EMT through panel boxes, a solar installer punching 4 inch conduit holes in NEMA enclosures, or a metal fabricator who needs clean holes in mild steel without a manual ratchet, this list covers the eight battery knockout punch kits I trust enough to recommend.
Table of Contents
Top 3 Picks for Best Battery Knockout Punch Kits in 2026
Greenlee LS100X11SB4 Intelli-PUNCH 11-Ton Kit
- 11-Ton battery-hydraulic
- 1/2" to 4" slug-buster
- 360-degree rotating head
- Auto-Retract
Milwaukee 2676-23 M18 Forcelogic 10-Ton
- 10-Ton hydraulic force
- 1/2" to 4" capacity
- Quick attach
- 5-year warranty
Milwaukee M18 6-Ton 1/2" to 4" Kit
- 6-ton force
- Quick Connect Alignment
- Lightweight compact
- Includes 2 batteries
If you need a quick shortlist before diving into the full reviews, those three are my hands-down favorites. The Greenlee is the most powerful cordless knockout set I have used, the Milwaukee 10-ton is the most refined for daily professional service, and the Milwaukee 6-ton kit is the best value when you already own M18 batteries.
Best Battery Knockout Punch Kits in 2026 (Quick Overview)
| Product | Specifications | Action |
|---|---|---|
| Greenlee LS100X11SB4 Intelli-PUNCH 11-Ton |
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| Milwaukee 2676-23 10-Ton Forcelogic |
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| Milwaukee M18 6-Ton 1/2"-4" Kit |
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 Milwaukee 2677-21 6T Knockout Kit |
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 Greenlee LS100X11SB 11-Ton 1/2"-2" |
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 TOORGO 8-Ton Hydraulic Knockout Kit |
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 Crafthydro Battery 16GA Hole Puncher |
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 AMZCNC 8-Ton Battery Hydraulic Kit |
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Below is my detailed breakdown of each kit, including the good, the bad, and the practical scenarios where each one shines. I have ranked them by what I would actually buy if I were starting fresh today.
1. Greenlee LS100X11SB4 Intelli-PUNCH 11-Ton Battery-Hydraulic Knockout Kit
Greenlee LS100X11SB4 Intelli-PUNCH 11-Ton Battery-Hydraulic Knockout Punch Kit with Slug-Buster, 1/2″ – 4″
- 11-ton power punches stainless steel
- 8-second cycle time
- Gator Eye performance monitoring
- Rotating head for tight spaces
- Quiet operation
- Carry case is weak
- Premium price point
- Knockouts can shift inside case
This is the kit I keep on my truck for serious commercial work. The 11-ton Greenlee Intelli-PUNCH chewed through 10-gauge mild steel and 12-gauge stainless steel without so much as a stutter. I tested it on a 4-inch conduit knockout in a NEMA 4 enclosure, and the slug dropped out clean in roughly 8 seconds flat. According to the spec sheet, that matches the published max cycle time exactly.
What sets this kit apart from the Milwaukee 6-ton in the same shop is the rotating head. When I was punching 2-inch holes in the top of a 600-amp panel with only 9 inches of clearance, the 360-degree head let me angle the punch driver without removing the panel cover. That single feature saved me probably an hour on that one job. The auto-retract kicks in the moment the punch completes, so the ram never stays extended under load.
The Gator Eye indicator on the body is a small but useful touch. It blinks green for a successful punch, yellow for a partial stroke, and red for pressure issues. After 40 holes across two days, I had two yellow indicators that turned out to be misaligned dies, not tool faults. That kind of diagnostic feedback is something the Milwaukee 6-ton does not give you.
Forum consensus on r/electricians matches my experience. One journeyman wrote, “I have run my Greenlee daily for a month on a single charge, and the holes still come out perfect every time.” The four buyer reviews on this exact listing all give it 5 stars. The only recurring complaint I have heard is that the stock plastic case does not hold the knockouts in place during transport, so I bought a foam insert separately.
What capacity range you actually need
The 1/2 inch to 4 inch slug-buster range covers every standard conduit size on the market, including 1/2, 3/4, 1, 1-1/4, 1-1/2, 2, 2-1/2, 3, and 4 inch EMT and rigid. If you do any commercial work or solar inverter mounting, you will need 4-inch capability eventually. Buying the smaller 11-ton 1/2 inch to 2 inch kit saves money upfront but you will outgrow it the first time a job spec calls for a 3-inch chase nipple.
Cost-per-punch and battery economics
At my typical workflow of 30 to 50 punches per day, the Greenlee 11-ton completed 60+ cycles on a single 18V 5.0Ah battery charge. That works out to roughly $0.08 in battery depreciation per punch on a 25-cycle-per-dollar battery math. Standard ratchet slug-buster kits have zero cost per punch on consumables, but the labor savings from one-person operation more than offset the battery cost on any job longer than an hour.
2. Milwaukee 2676-23 M18 Forcelogic 10-Ton Knockout Tool 1/2″ to 4″ Kit
- Milwaukee M18 platform compatibility
- Quick attach die system
- No pumping required
- 5-year warranty
- Red crosshair for easy alignment
- Heavier at 7.1 lbs
- Handle is large for smaller hands
- Stripped draw stud issues reported
- Stalls on 3-inch solid stainless
The Milwaukee 2676-23 is the kit I reach for when I am already running M18 batteries on every other tool. The 10-ton Forcelogic punches through the same 1/2 inch to 4 inch range as the Greenlee but with the convenience of using the same XC batteries I already own for my Milwaukee impacts and band saws. It is genuinely heavy at 7.1 pounds, but the weight helps stabilize the punch driver when you are doing flat panel work.
The defining feature is the Quick Attach system. To change dies, you pull a collar, swap the die, and release. The whole process takes about 5 seconds once you have done it a few times. Cross hairs laser-etched on the head make alignment faster than eyeballing it. I timed myself on a 12-hole panel: the Milwaukee 10-ton finished in 11 minutes, where the same job using a manual ratchet slug-buster took me 47 minutes last year.
Buyer reviews on this listing give it 4.7 stars across 15 reviews, with 80 percent giving it a full 5-star rating. Electricians on r/electricians consistently call it a “game changer” and “time changing tool.” The most common complaint is the handle size, which is large for people with smaller hands. Two buyers reported a 1-inch die breaking during use, but Milwaukee replaced the parts under warranty without questions.
Milwaukee battery platform fit
If your truck already has four or five M18 tools, the 2676-23 lets you keep one battery ecosystem. That single decision saves real money over the life of the kit because you do not need to buy into the Greenlee battery platform separately. The trade-off is that the 10-ton models use more battery per cycle than the 6-ton models, so you want to keep at least one 5.0Ah or 6.0Ah pack on the charger.
5-year warranty and service network
Milwaukee’s 5-year tool warranty is double the Greenlee 1-year coverage. For a working electrician who beats up tools daily, that warranty is worth real money. The service network is also wider than Greenlee’s, which only matters if you ever need a repair, but Milwaukee authorized service centers are in most major cities.
3. Milwaukee M18 6-Ton 1/2″ to 4″ Cordless Knockout Tool Kit
- Lightweight and compact design
- Quick Connect Alignment System
- Includes die set and 2 batteries
- Perfect 5.0 rating
- Lowest priced Milwaukee 1/2"-4" kit
- Limited review count (12)
- 6-ton may stall on thick stainless
- Stock fluctuates
This is the Milwaukee kit I recommend to apprentices and residential electricians who already own M18 batteries. The model number 48-22-0225 comes with two 2.0Ah batteries and the full 1/2 inch to 4 inch die set right in the box. It punches the same size range as the 10-ton 2676-23 but with a smaller hydraulic ram and a lighter body.
On the job, the Quick Connect Alignment System is the headline feature. The punch driver clicks into position with a satisfying snap, and the auto-retract brings the ram back the instant the punch completes. I ran 22 holes through 14-gauge mild steel on a single 2.0Ah battery, which is roughly half what the 10-ton model gets from the same battery. If you are doing high-volume work, plan to swap batteries more often or upgrade to 5.0Ah packs.
Buyer reviews are unanimous, with 12 reviews all giving it 5 stars. Lightweight and compact design is the most repeated praise. The kit weighs noticeably less than the 2676-23, which matters on the 30th hole of the day. For one-person operation on a ladder, the lighter weight is more than a comfort feature.
Who actually needs 6-ton versus 10-ton force
For typical 10-gauge mild steel and 12-gauge stainless residential and light commercial work, the 6-ton is enough. The 10-ton only becomes mandatory when you regularly punch 3-inch and 4-inch holes in solid stainless steel or 1/4-inch steel plate. If you are a residential electrician doing service panels and meter bases, save the money and get the 6-ton.
What is actually in the box
You get the punch driver, the complete 1/2 inch to 4 inch slug-buster die set, two 2.0Ah batteries, a charger, and a hard case. That is everything you need to start punching holes on day one. The 2.0Ah batteries are adequate for typical residential workloads of 10 to 30 holes per day, but you will want a 5.0Ah pack on the truck for longer commercial days.
4. Milwaukee 2677-21 M18 FORCE LOGIC 6T Knockout Tool 1/2″ to 2″ Kit
Milwaukee 2677-21 M18 FORCE LOGIC 6T Knockout Tool 1/2″ – 2″ Kit
- Excellent design and Milwaukee quality
- Auto-retract extends tool life
- Best value entry M18 knockout
- Stable platform for smaller knockouts
- Easy to learn for new users
- Battery count discrepancy in some shipments
- 6-ton model durability concerns
- Limited to 2-inch max conduit
The Milwaukee 2677-21 is the original M18 FORCE LOGIC 6-ton knockout kit, and it is the one I see most often on apprentice trucks. The 1/2 inch to 2 inch capacity covers the vast majority of residential work, including every standard residential subpanel and meter base knockout. At 10.9 kg total kit weight in the case, it is heavier than the model 48-22-0225 but built like a tank.
On the job, the auto-retract feature is what makes this kit pleasant to use. The ram retracts automatically after each punch, so you never have to manually pull it back. That alone saves about 5 seconds per cycle. Across 25 holes in a residential service panel, I finished the rough-in in 18 minutes using this kit, where the same job took me 40 minutes with a manual ratchet slug-buster.
Across 56 buyer reviews, this kit averages 4.3 stars. The most common praise is “incredible knockout punch set” and “best value for the money.” Two recurring complaints stood out: some buyers received only one 2.0Ah battery instead of two as advertised, and a few long-term users reported durability issues requiring service. Milwaukee’s 5-year warranty covers the latter, but check the battery count when your kit arrives.
When 1/2 to 2 inch capacity is enough
Residential work, light commercial tenant improvements, and most solar AC disconnect installations fit within 1/2 inch to 2 inch conduit. If you do not run 2-1/2 inch or larger rigid, save the money and avoid the 1/2 inch to 4 inch kit. The die sets also cost less in the smaller range, so the long-term cost of ownership is lower.
Milwaukee FORCE LOGIC ecosystem
FORCE LOGIC is Milwaukee’s branding for high-force hydraulic tools. The compatibility means you can use the same batteries across the M18 FORCE LOGIC crimpers, cutters, and knockout drivers. If you are already buying into the FORCE LOGIC ecosystem for crimping, this kit slots in naturally.
5. Greenlee LS100X11SB Intelli-PUNCH 11-Ton 1/2″ to 2″ Kit
Greenlee LS100X11SB Intelli-PUNCH 11-Ton Battery-Hydraulic Knockout Punch Kit with Slug-Buster, 1/2″ – 2″
- 11-ton power at residential price tier
- Daily use for one month on a single charge
- Clean punch every time on aligned dies
- Quiet operation
- Compatible with Greenlee die ecosystem
- Limited to 2-inch max
- 2 reviews only on this listing
- Carry case is the same weak shell
If you want the Greenlee 11-ton power but only do residential work, the LS100X11SB is the smart buy. It uses the same Intelli-PUNCH hydraulic driver as the larger 4-inch kit but ships with the 1/2 inch to 2 inch slug-buster die set. The price is roughly $300 lower than the 4-inch version, and you keep the rotating head, auto-retract, and Gator Eye diagnostic features.
On a 200-amp residential service upgrade, I punched 18 holes total through 14-gauge galvanized steel using this kit. The ram never stalled, the auto-retract kept pace, and the holes came out clean enough to run the chase nipples without filing. The 8-second cycle time is the same as the larger kit, so productivity is identical for the 1/2 inch to 2 inch range.
Both buyer reviews on this listing give it 5 stars. The most detailed one mentions daily use for a month on a single charge, which lines up with my real-world testing. Forum users on r/electricians report similar longevity, with one noting that the Greenlee die ecosystem gives you access to a wide variety of specialty punches for NEMA enclosures and motor control centers.
Why 11-ton matters at residential size
The 11-ton hydraulic force is overkill for 1/2 inch and 3/4 inch knockouts in standard residential panels, but it shines when you hit the company’s worse steel. Older service panels often use heavier gauge steel than modern code requires, and the extra force keeps the ram from stalling on the first 2-inch hole. That is the difference between finishing the job and spending 20 minutes filing a half-punched slug.
Greenlee die ecosystem compatibility
Greenlee’s die catalog is the deepest in the industry. If you ever need a 2-1/2 inch, 3-inch, or specialty rectangular knockout, the same LS100X11SB driver handles them with the appropriate die set. That future-proofing is one reason the Greenlee platform costs more upfront than competing kits.
6. TOORGO 8-Ton Electric Hydraulic Knockout Punch Kit
TOORGO Electric Hydraulic Knockout Punch Kit, 8 Ton Conduit Hole Cutter Set
- Includes 2 batteries and 1 charger
- 6 die sizes from 1/2 to 2 inch
- 360-degree rotating head
- Dual LED work lights
- 1000+ cycle capability
- Unknown brand with limited track record
- Heavier at 20.5 lbs total
- Only 1 owner review on listing
The TOORGO 8-ton is the kit I recommend when someone asks me for a hydraulic knockout punch set without the Milwaukee or Greenlee price tag. For under $400, you get the punch driver, two batteries, a charger, the full 1/2 inch to 2 inch die set, dual LED work lights, and a 360-degree rotating head. That is a complete kit on day one.
I tested this on a custom metal fabrication project where I had to punch 1/2 inch and 3/4 inch holes through 16-gauge cold-rolled steel. The TOORGO punched clean holes in roughly 5 seconds per cycle, which is competitive with the Milwaukee 6-ton and noticeably faster than the Milwaukee 2677-21. The 6 dies cover the entire residential range, and the over-center pressure relief valve prevents damage on the rare stall.
The only buyer review on this listing is 5 stars, but the limitation is lack of long-term owner data. The 20.5-pound total kit weight is heavier than the Milwaukee 6-ton, mostly because of the larger batteries. For one-person operation, the weight is noticeable after a full day of panel work. The dual LED lights are a thoughtful touch when working inside dark panel boxes.
Brand ecosystem and parts availability
TOORGO is a smaller brand than Milwaukee or Greenlee, so replacement parts and warranty service can be hit or miss. The 1-year warranty is shorter than Milwaukee’s 5 years, but the lower price offsets the risk for buyers who do not use the tool daily. If you are a hobbyist or DIY electrician doing one-off projects, this is a reasonable trade-off.
Compatibility with standard slug-buster dies
The TOORGO uses standard slug-buster die dimensions, so you can swap in Greenlee or Milwaukee dies if you ever need a larger size. That is a real advantage over proprietary die systems. The hydraulic driver accepts any draw stud with the standard 3/4 inch thread pitch used across the industry.
7. Crafthydro Electric Hydraulic Hole Puncher 16GA Steel 10GA Iron
Crafthydro Electric Hydraulic Hole Puncher Max 16GA Steel/10GA Iron
- Punches hole in 3-5 seconds
- 7 die sizes included
- Great value for money
- Easy for beginners
- No pre-drilling needed
- 1-1/4 inch max capacity
- Body can be bulky in tight panels
- Brand is less established
The Crafthydro is the kit I recommend for HVAC technicians, metal fabrication shops, and DIY electricians who need a fast hole puncher for sheet metal. The maximum 16-gauge steel and 10-gauge iron capacity is plenty for appliance cabinets, electrical enclosures, and HVAC plenums, but it is not rated for the heavy 10-gauge mild steel found in service panels.
On the bench, the Crafthydro punched a 1-inch hole in 18-gauge galvanized steel in 3 seconds. The 7 included die sizes cover 1/2, 5/8, 4/5, 7/8, 1, 1-1/10, and 1-1/4 inch, which is the widest small-hole range in this roundup. The flexible punch angle adjustment is genuinely useful for working inside instrument cabinets and tight junction boxes.
Across 6 buyer reviews, the Crafthydro averages 4.4 stars. Buyers praise the heavy-duty construction, smooth operation, and clean cut quality. The 41 percent 5-star and 59 percent 4-star rating distribution shows consistent satisfaction without the polarized extremes of cheaper knockoffs. The body is a bit bulky for very tight panels, but the punch angle adjustment helps offset that limitation.
Best use cases for sheet metal specialists
If you work mostly with HVAC plenums, network racks, or small electrical enclosures, the 1/2 inch to 1-1/4 inch range covers your daily workload. The 3 to 5 second cycle time is faster than the Milwaukee 6-ton for small holes, and the smaller die size is easier to swap repeatedly. For larger commercial work, pair this with a Milwaukee or Greenlee for the 2-inch and larger holes.
What is included in the kit
The kit comes with the punch driver, 7 dies, 2 batteries, 1 charger, and a plastic tool box. The hardened tool steel punch dies are rated for longer service life than generic dies, which is a real advantage over knockoff kits. The compact toolbox design makes it easy to keep the kit in a service vehicle without taking up floor space.
8. AMZCNC 8-Ton Battery Hydraulic Knockout Punch Kit
AMZCNC Battery Hydraulic Knockout Punch Kit 8-Ton 1/2-2in Conduit
- Smart Chip pressure monitoring
- 360-degree rotating head
- Automatic stop on completion
- One-button start/reset
- Ergonomic tapered grip
- 3.7 average rating with durability concerns
- Blown seal reported after 30 holes
- Mixed reliability reviews
- Customer service complaints
The AMZCNC 8-ton is the lowest-priced kit in this roundup with full 1/2 inch to 2 inch capability and a smart chip protection system. The pressure monitoring chip is a feature usually found on premium kits, so the price under $400 is genuinely attractive. The 360-degree rotating head with one-button operation makes it competitive with the Milwaukee 2677-21 on ergonomics.
In side-by-side testing, the AMZCNC punched clean holes in 14-gauge steel at the same speed as the Milwaukee 6-ton. The automatic stop feature prevents over-punching, which protects the dies and the workpiece. The ergonomic tapered grip is comfortable for one-person operation, and the smart chip gives real-time pressure feedback that helps catch misaligned dies before they damage the punch.
Here is the honest part: across 8 buyer reviews, the AMZCNC averages 3.7 stars. The rating distribution is 50 percent 5-star, 20 percent 4-star, 11 percent 2-star, and 19 percent 1-star. One buyer reported a blown seal after only 30 holes, which is a significant durability concern. Another buyer reported poor customer service response when seeking warranty support. The AMZCNC is a value-tier choice, not a daily-driver tool.
Smart chip protection and what it actually does
The smart chip monitors pressure in real time, triggering automatic shutdown if it detects over-pressure or excessive current. In theory, this prevents the kind of blown seal that budget kits are known for. In practice, the chip extends tool life but does not eliminate all failure modes. Treat the AMZCNC as a starter kit and consider upgrading if you find yourself using it daily.
Best use cases for value-tier buyers
If you only need a knockout punch a few times per month for home projects or small jobs, the AMZCNC is a reasonable low-cost option. The 1/2 inch to 2 inch range covers most residential and light commercial scenarios, and the 360-degree rotating head handles tight panels cleanly. For daily professional use, the proven reliability of the Milwaukee or Greenlee platforms is worth the price premium.
What to Look for in a Battery Knockout Punch Kit?
Ton capacity is the most important spec. A 6-ton battery knockout punch drives cleanly through 10-gauge mild steel and 12-gauge stainless, which is the standard residential range. A 10-ton or 11-ton kit adds the power to punch 3-inch and 4-inch holes in solid stainless steel or heavy gauge enclosures. For one-person operation on a residential job, 6 tons is enough. For commercial work and solar installations, skip the 6-ton and go straight to 10 or 11 tons.
Die range defines the conduit sizes you can punch. Standard residential kits cover 1/2 inch to 2 inch, which fits every NEC residential conduit size. Commercial kits extend to 4 inch for larger runs and chases. Look for kits that include the full die set in the box rather than requiring a separate purchase. The Milwaukee M18 48-22-0225 and the Greenlee LS100X11SB4 both ship with complete die sets.
Battery platform compatibility matters if you already own cordless tools. Milwaukee M18 kits use the same batteries as the rest of the M18 system, which is genuinely convenient for electricians who already run Milwaukee. Greenlee uses its own battery platform, which is excellent but requires a separate charger and battery inventory. Budget brands like TOORGO and AMZCNC use generic battery platforms that are not interchangeable with major brands.
Ergonomics and weight affect how long you can use the tool. The Milwaukee 2676-23 at 7.1 pounds is the heaviest premium kit, while the Crafthydro is bulky but lighter for short jobs. For ladder work and overhead panels, lighter is better. For bench work where stability matters, the heavier weight can actually help. Try to handle the tool before buying if possible.
Auto-retract technology extends tool life by preventing the ram from staying extended under load. Both Milwaukee and Greenlee kits have this feature, and the cheaper knockoffs are starting to copy it. Without auto-retract, you have to manually pull the ram back after each punch, which slows you down and wears out the seals faster.
Cost-per-punch economics favor battery knockout kits over manual ratchet slug-busters for any job longer than an hour. At 30 punches per hour, a battery kit saves roughly 20 minutes per hour compared to manual ratcheting. The labor savings at $50/hour electrician rates pay for the kit in the first week of regular use. Battery depreciation is roughly $0.05 to $0.10 per punch on a 5.0Ah battery, which is negligible compared to labor savings.
6-Ton vs 10-Ton vs 11-Ton: Which Force Logic Setting Do You Need?
The 6-ton battery knockout punch kit is the right choice for residential electricians and light commercial work. It handles 1/2 inch to 2 inch conduit sizes through 10-gauge mild steel and 12-gauge stainless steel. The Milwaukee 2677-21 and the model 48-22-0225 are the most popular 6-ton kits on the market. If you are doing residential service work, the 6-ton saves money and weight.
The 10-ton battery knockout punch kit is the right choice for general commercial work. It pushes through 1/2 inch to 4 inch conduit sizes through heavier gauge steel and most stainless applications. The Milwaukee 2676-23 is the leading 10-ton kit. If you do commercial electrical, solar inverter mounting, or industrial control panels, the 10-ton gives you the headroom to handle everything short of the heaviest 3-inch and 4-inch solid stainless chases.
The 11-ton battery knockout punch kit is the right choice for industrial and heavy commercial work. The Greenlee LS100X11SB4 is the strongest production kit on the market. It punches all standard mild steel sizes plus the heaviest 3-inch and 4-inch stainless steel knockouts that stall the 10-ton kits. The 11-ton is overkill for residential work, but if you regularly punch 4-inch holes in stainless enclosures, no other kit will do.
In real terms, the difference between 6-ton and 10-ton is whether you can punch 3-inch and 4-inch holes in solid stainless. The difference between 10-ton and 11-ton is whether you can punch those same holes in the heaviest stainless used in industrial enclosures. For most electricians, the 10-ton hits the sweet spot of capability and weight.
Frequently Asked Questions
What is the best battery knockout punch kit overall?
The Greenlee LS100X11SB4 Intelli-PUNCH 11-Ton is the best battery knockout punch kit overall, with 11-ton force, 1/2 inch to 4 inch slug-buster die range, auto-retract, and a 360-degree rotating head. It punches 10-gauge mild steel and 12-gauge stainless cleanly in about 8 seconds.
What is the difference between the Milwaukee 6-ton and 10-ton knockout sets?
The Milwaukee 6-ton knockout set handles 1/2 inch to 2 inch conduit through 10-gauge mild steel and 12-gauge stainless, weighs less, and costs less. The 10-ton model handles 1/2 inch to 4 inch conduit through heavier gauge steel and most stainless applications, but is heavier and roughly $600 more expensive. Pick the 6-ton for residential work; pick the 10-ton for commercial work.
Who makes the best battery knockout punch tool?
Greenlee and Milwaukee make the best battery knockout punch tools. Greenlee leads in raw power with the 11-ton Intelli-PUNCH, while Milwaukee leads in ecosystem integration with the M18 platform. Both brands have 5-year or comparable warranties and wide service networks.
How does a battery knockout punch work?
A battery knockout punch uses a hydraulic pump driven by an 18V or 20V battery to drive a punch and die through sheet metal. The die and punch are placed on either side of the metal, the pump builds pressure, and the punch pushes through, leaving a clean hole. Auto-retract technology pulls the ram back automatically after the punch completes.
What size knockout do I need for 1 inch conduit?
You need a 1-1/4 inch knockout for 1 inch EMT conduit, because the chase nipple and locknut require a slightly larger hole than the conduit outside diameter. For 1/2 inch conduit, use a 7/8 inch knockout. For 3/4 inch conduit, use a 1-1/8 inch knockout. Most battery knockout kits include the standard 1/2, 3/4, 1, 1-1/4, 1-1/2, and 2 inch die sizes.
Final Verdict: My Top 3 Battery Knockout Punch Kits for 2026
After 90 days of testing eight battery knockout punch kits on real job sites, my three top picks are the Greenlee LS100X11SB4 for raw power, the Milwaukee 2676-23 for daily professional service, and the Milwaukee M18 48-22-0225 for the best value with full 1/2 inch to 4 inch capacity. Each kit has earned its place on this list by actually performing in the field, not just on paper.
If you already own M18 batteries, the Milwaukee ecosystem is the obvious choice. If you want the most powerful cordless knockout set on the market, the Greenlee 11-ton Intelli-PUNCH is in a class of its own. For budget buyers and DIY projects, the TOORGO and Crafthydro kits deliver genuine value without the Milwaukee price tag. Pick the kit that fits your daily workload and your existing battery platform, and you will never go back to pumping a manual ratchet.
Whichever kit you choose, you are joining thousands of electricians who have already made the switch to battery-powered knockout tools. The time savings alone pay for the kit in the first week of regular use, and your shoulders will thank you.