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Bosch PS40-2A 12-Volt Max Lithium-Ion Impact Driver

4.7 out of 5 stars 41 customer reviews

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  • 60% more torque than 18V drill/driver - 800 in.-lbs of max torque
  • High Performance Motor and All Metal Gears Deliver 1,800 RPM and 3,000 BPM for fast fastening
  • LED Light Ring — 3 LEDs illuminate work area for use in dark areas
  • Spring-Loaded Impact Mechanism — Reduces user fatigue
  • 1/4" hex drive with quick release of the tool for optimum lighting
5 new from $160.00 1 refurbished from $112.19

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Technical Details

  • compact

Product Description

Product Description

2611-7689 Features: -Impact driver.-3 LEDs illuminate work area for use in dark areas.-ProVantage 3-year protection plan.-Bosch designed hammer and anvil system delivers 1,800 RPM and 3,000 BPM.-Spring-loaded impact mechanism reduces user fatigue.-Aluminum gear housing with protective rubber front. Specifications: -50pct lighter than 18 volt Impact Driver at 2.2 lbs.-65pct more torque than 18 volt drill/driver with 800 inch per pounds of max torque.-Litheon 12 volt Max batteries, the most advanced lithium-ion batteries available today. Dimensions: -1/4'' hex drive with quick release.


Designed to withstand even heavy-duty jobsite conditions, the Bosch PS40-2A 12-Volt Max Lithium-Ion Impact Driver meets a wide variety of professional demands. This small and powerful all-purpose tool boasts long battery life, outstanding comfort, and a high-performance design. It supplies the muscle you need to get the job done right the first time.

The PS40-2A 12-Volt Max Lithium-Ion Impact Driver offers:
  • Litheon batteries for long-lasting power.
  • 300% more torque than the competition.
  • 1,800 RPM for quick fastening.
  • Ergonomic design to minimize user fatigue.

Hammer-and-anvil system provides 800 in/lbs of torque. View larger.

Compact design lets you reach into tight corners.
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1,800 RPM help you get the job done quickly.
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12-Volt Litheon Batteries for Long-Lasting Power
The PS40-2A gets its power from Litheon batteries, the most advanced lithium-ion batteries available today. These batteries allow more battery charges and provide longer runtime with no memory effect--meaning the batteries don't need to be empty before charging. The batteries can also be taken out of the charger before charging is complete.

Other benefits include: significantly less self discharge; electronic cell protection that guards against overheating, overload, and deep discharge; and no loss of power from the first to last screw or hole. Best of all, these batteries will fully charge in 30 minutes and will be at 85% capacity in just 15 minutes.

Compact, Lightweight Design for Efficient, Fatigue-Free Work
The PS40-2A features an innovative driver designed with a compact and light housing and superior performance. Measuring only 6.5 inches in length and weighing just 2.2 pounds, it performs up to 80% of all impact-driver applications. And because it easily drives screws without the need for pushing, the tool will help prevent you from becoming overly tired on the job.

Built for a Wide Range of Heavy-Duty, Professional Applications
Ideal for driving and tightening metal bolts, screwing wood up to three inches thick, drilling wood up to 3/8 inch thick, and drilling sheet metal with a maximum thickness of 5/16 inch, the PS40-2A offers impressive range. You can drive fasteners into wood and concrete and enjoy the anti-shock protection provided by the Heat Shield. With this handy tool you can also drive fasteners into sheet metal, tighten nuts and bolts, complete a range of automotive repair jobs, install a garage door, build a deck, tackle plumbing issues, complete interior and exterior steel framing jobs, and much more.

Hammer-and-Anvil System for 800 In./Lbs. of Torque
The PS40-2A comes equipped with a Bosch-designed hammer-and-anvil system, which produces double the torque of a gear-driven system. The PS40-2A provides a truly impressive 800 in./lbs. torque--up to 300% more than other drills/drivers--giving you the necessary power to drive or remove lag screws. At the same time, the innovative design of this mechanism ensures that torque is not transferred to your hand, resulting in improved control and a lower risk of wrist injury, even during your toughest jobs.

Up to 3,000 BPM for Quick Fastening
The PS40-2A also delivers 1,800 RPM/3,000 BPM, so you can power through drilling and fastening jobs both big and small. And you can enjoy all this power without having to carry around a big, bulky tool. Thanks to its two-layer planetary gear, the tool's diameter shrinks to a truly compact size.

Sealed Internal Components Prevent Oil Leakage
To help keep operation smooth and trouble-free, the gearbox's internal components are sealed by aluminum housing and plastic rear housing to prevent oil leakage. This design also maintains optimum lubrication for longer life. For peace of mind, a rubber shock absorber behind the impact mechanism helps minimize vibrations and increases the stability of the gearbox if it's dropped, even from 6.5-feet.

Smart Features for Easy Operation
A unique LED Light Ring with three lights provides ample illumination in tight or enclosed spaces. The LED also offers a pre-light to brighten your workspace when you pull the trigger. Additionally, anti-slip rubber bumpers on the tool body prevent slipping and damage.

Finally, a forward/reverse switch is conveniently placed for both right- and left-handed users and is accessible by even petite hands.

ProVantage Guarantee
The PS40-2A comes with the ProVantage three-year protection plan, which guarantees two years of battery protection and one year of tool protection. Under this plan, you can receive two years of free battery replacements, tool replacement for one year, and a free tool repair package for the second and third years.

What's in the Box
Drill/Driver; carrying case; two 1.5-inch power drive bits; one 30-minute charger; and two Litheon 12-Volt Max Batteries.

12V Max Lithium Ion Family of Tools
For more information, click on the images below
Impact Drive Kit

Pocket Driver with Two Batteries

Multi-X Cutting Kit

Multi-X Carpenter Kit

3/8-Inch Drill/Driver

Impact Driver

Impact Driver and Pocket Driver Combo Kit

Metal Shear

Product Information

Technical Details

Part Number PS40-2A
Item Weight 4.9 pounds
Product Dimensions 12.7 x 9.7 x 4.2 inches
Item model number PS40-2A
Discontinued by manufacturer Yes
Color Blue
Power Source cordless-electric
Voltage 12 volts
Item Package Quantity 1
Special Features compact
Included Components case
Batteries Included? Yes
Batteries Required? Yes
Battery Cell Type Lithium Ion
Warranty Description 30 day money back guarentee, 1 year warranty

Additional Information

Customer Reviews
4.7 out of 5 stars 41 customer reviews

4.7 out of 5 stars
Best Sellers Rank #448,620 in Home Improvements (See top 100)
#726 in Home Improvement > Power & Hand Tools > Power Tools > Drills > Drill Drivers
#20,382 in Home Improvement > Contractor Supply
Shipping Weight 4.9 pounds
Date First Available September 14, 2004

Warranty & Support

Product Warranty: For warranty information about this product, please click here


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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Within 10 minutes this awesome little tool became my absolute favorite item in the shop. I do a lot of quick and dirty assembly of things out of 2x4s and 3" drywall screws. Before I had this driver, I used a drill to drive those screws. Every time I did, by the time I was done my wrist would be killing me. Why? Because to drive a long phillips head screw through 2 2x4s you have to push really hard on the drill to keep it engaged with the head of the screw. And even then, it would often strip the screw head and/or fail to sink the screw all the way.

Now enter the ps40-2a. With this thing I can drive 3" drywall screws all day long, and I can hold the tool with two fingertips when I do it. I'm not kidding. 2 fingertips and no pressure is all that's required to hold this tool in place while it pounds your screws through the wood effortlessly.

It surprised me at first that this thing is slower than a drill. It is also quite loud when the hammer action engages (I use ear protection with it). But neither of those things is enough to dampen my 5 star rating. If you ever have to drive long screws into wood and know what I'm talking about with hurt wrists from pushing on your regular drill, then order this thing today. You'll be so glad you did.
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By Peter A on November 3, 2008
Verified Purchase
This is the smallest & yet the most powerful driver I've ever used. It jams 'em right in.

I'm just a DIYer but some recent big projects needed lots of screwing into 2x4s. Floor fixes & bathtub support replacement! Bang! Bang! Bang! When that impacter hits - it's noisy! And the screws go in FAST! Interestingly they come OUT even faster, shockingly fast, like a 2 1/2 inch screw comes out in a second. Cool!

THIS is the tool they warn you about with the "torque settings" (which I never had a problem with set on MAX) adjustments on other tools. A light touch does most jobs fine. It will drive screws THROUGH whatever, and thin soft wood cracks & splinters like candy! Oopsy!

Pro's may want to go with the Makita BTD142HW 18V for a job site, but this is 2/3 the strength (more that enough), 2/3 the weight, and can be found for 2/3 the price(or less). Nicely rounded out specs.
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Verified Purchase
I bought this for work, not just light weekend duty. I'm a bit disappointed with its lack of speed, power, and the amount of noise it makes. It has so little power that you can grip a normal bit driver chuck in your hand and it will begin to ratchet the impact drive. It won't drive a 3" screw fully into pressure treated framing lumber, at least not within a time span I was willing to wait. Plus, it's not much lighter than a normal lithium ion makita 18v or panasonic 14.4v impact driver. With either of those a 3" screw can usually be driven ~3/4 of the way in before it even starts to impact drive, and at probably twice the speed.

Another annoyance is the trigger, which binds up a bit if your finger is not square to it and if you don't put pressure on it perfectly straight back. If your finger is just on the lower edge the trigger will twist a bit and bind up, not wanting to push in. This is particularly annoying when driving screws above your head or any odd angle where you're not easily able to hold the driver with your hand/arm straight back. Also, the trigger/driver is not as sensitive as some other drivers I've used, especially panasonic's. The trigger lightly depressed will turn on the LED lighting, but there's no super slow speed which makes rotating your screwdriver bit to line up with a screw (especially slotted screws) a real pain.

Not to say this is a bad product, as overall it's a nice little set. The size is nice and the battery life is pretty good and fast charging, plus the soft carrying case is small and handy. It's also about half the cost as other drivers I've used. I just wish there had been a review where someone had compared this driver to a more serious product.
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I've had this tool for a couple years and I really like it. Provided you understand what it can do, you'll probably be happy with it too.

I've used this to run a variety of screws, 1 inch to 3 inch, into studs and 2X4s and PTL. It has driven them all without a hitch. That said, I almost always drill a pilot hole and this driver works noticeably slower than my big Craftsman impact driver. Using the Bosch I can drive a 3 inch screw in about 4 or 5 seconds. The Craftsman can do it in 2. That might not sound like a big deal, but if you're really trying to hustle, you do begin to notice that things take longer with the Bosch. The screws go in, but it takes longer. I imagine if I was building decks for a living, this might be a deal breaker.

I do love the LED light. You might not think it's that big a deal, but it really does help you see what you're doing. It's a great feature.

One big plus of this tool is its remarkably small size. You really can stick it in your pocket when climbing a ladder, and it doesn't cause your tool belt to sag down. It's not super light, but much lighter than a full size driver.

The second big plus of this tool is the Li-on battery. It charges very quickly, about 15-20 minutes, doesn't lag as the charge wears down, and when fully charged will stay charged for quite some time. This is nice in that when you find yourself suddenly needing to run a couple screws, the driver is usually ready to go or can be ready to go in just a bit. I've charged up the batteries, have come back a month later, plugged them into the charger, and they're ready in under 5 minutes, totally charged. That's cool.

I would strongly suggest getting the accompanying drill that goes with this unit.
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