I've had the PS40 for over six months now and find it to be an excellent driver - nearly perfect.
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br /At first I was put off by the noise of the impact mechanism, but after drilling hundreds of deck screws I came to appreciate the tremendous amount of torque available. More torque is usually a good thing, but in a standard drill/driver excessive torque can be bad as it requires more work, is less precise, or possibly dangerous if the tool, say, twists you off a ladder. The PS40 doesn't have this problem, in fact, it requires less effort to drive the same fastener as a standard driver or drill. I found myself backing off on the downward pressure to the fastener - much less force is necessary to keep the bit engaged. In particular this is a boon for those situations where you can't get a good and strong angle, such as working overhead or where the screw is hidden from view. With the PS40, if you can get the bit in the fastener that's probably enough to get the job done.
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br /The impact noise is loud but not "hurt your ears" loud. If you're using it inside it may annoy others in the house, be forewarned.
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br /The size, grip, weight, balance, and battery life are all excellent. It really does feel like a phaser, that is, if the phaser actually existed.
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br /I have not tried using it as a drill. To do that would require purchase of a conversion chuck such as the DEWALT DW0521 Quick Connect Impact Driver Conversion Chuck (which is now on my wish list), or hex-shanked drill bits. Still, I find it quicker to use a regular drill for holes and then swap to the driver.
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br /For lighter duty driver applications, I would think the non-impact PS20 would be ideal (though I've not tried it). Given that the '20 retails for just over $100 (for the 2 battery charger kit) I'm considering buying one to compliment the 40. If they ever sell just the PS20 driver alone I will definitely buy one.
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br /The PS40-2A kit differs from the PS40-2 in that they throw in a belt holster. I wouldn't pay extra for it.
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br /I strongly recommended the PS40 for mid to high torque applications, such as deck building, drywall hanging, and framing.
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Bosch PS40-2 10.8V Impact Driver
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br /Terific design. It is light small and fits it a tool kit with ease. it's worklight is a nice touch. 30 minute charges wonderful. BUT. it will not work under 32 degrees F. annoying and unacceptable. the batteries wont work in the cold. also, it is not even close to the torque of my dewalt 18v drill. after failing to put 3 inch screws in all the way, I got my dewalt out and I forgot how much torque it had. i wont get another lithium powered drill.

I purchased this driver to help me in my work as an electrician. It's a well designed very compact tool, but won't replace my drill.
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br /First, the features. It's so small! It gets into places my 18 volt drill only dreams about and with the LED lights is very practical. The quality of build is apparent, and I like the balance of weight when it's in your hand. The handle is also well shaped and the direction switch is easily reached with your thumb, something I have to strain for with my 18 volt. The batteries last well although I haven't taken up Bosch on their number of screws driven on a charge claim. But the 30min. charge time seems pretty accurate. It turns at up to 1800 rpm and comes with 2 batteries.
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br /I've tried the tool out on a number of applications. Driving screws into wood, I have found the hammer action begins too soon, on a 1 inch screw the hammer action drives about 3/4 of it. The hammer action also seems to drive in smaller increments, and these two add up to it taking a long time to drive a 1" screw into wood.
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br /I've also tried it out on driving wafer screws into Q-deck. Q-deck is that steel ceiling in warehouse type buildings that is ribbed and wafer screws are about 1/2" and come with and without self-tapping tips. Again the Bosch PS40 begins the hammer action too soon for quickness and I prefer my regular drill for this too.
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br /For my liking, this impact gun works best on steel stud construction, again with wafer screws. Steel studs are a thinner metal than Q-deck and the screws drive in quite rapidly.
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br /The best feature of this gun for me is it's size and weight. There are plenty of times when I'm up a ladder and can just drop the thing in my pouch instead of hauling up my 18 volt drill. It might be slower in some applications, but it is much more convenient to use. And with the hammer action it's also easier to screw without straining against the torque of a conventional drill.
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br /It's also quite handy for removing doors off of panels or any kind of steel box. You can get up to 8 or more screws per cover and with a screwdriver this can take a while. Just be careful when replacing the screws, the hammer action will start to strip the screws if you overtighten.
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br /As a trademan, speed is usually of the essence which is why I refer to it taking too long in some applications. this is not necessarily a fault of the tool, it depends on your priorities. You need to weigh that against the size and ease of use for your needs.

This little tool is the best driver i could ask for. The reviews that say the PS40 dosnt have any torque, must be talking about something else. I just got done helping my brother in law put a roof on their barn and i used this thing on 3 1/2 inch and 2 1/2 inch screws all day (1 battery change). I was putting screws straight into nots in the wood which were very stiff and it just pushed them in. I also used it to fasten sheet metal to the roof and using self tapping screws it was so easy. I picked up my dewalt 18v drill/driver and tried it out for comparison but the bosch impact driver is just so much handier, the dewalt went back in the box. Great ergonomics, good power, and style make this my favorite tool.

I'm an admitted tool junkie that really needs to start some 12 step program or pray for an intervention episode. Each purchase involves hours of research since competing products at a similar price point can be very different in quality and effectiveness. Bosch seems to occupy the lion''s share of my tools and for good reason. They're always innovative, the quality is felt as soon as you hold their products and they seem to give years of trouble free service. This driver is no exception. My favorite driver/drill, though, had been the Panasonic EY6432GQKW 15.6-Volt. This Bosch though is physically smaller so works in tighter work situations, it's lighter and easier to carry around with you also causing less fatigue, the construction screams quality, and the power is more than adequate for anything you need to fasten. The quick release chuck is a pleasure to use especially when switching between driver bits and the Bosch quick fit drill bits so you don't need to have a separate drill and driver or waste time changing between the two. The batteries charge very quickly and seem to last forever on a charge. Even for a tool lover this thing is an uncommon delight. You'll find yourself tempted to just start disassembling things just for the fun of using this tool. If you need a driver as a DIY person or as a contractor, you won't regret buying this Bosch. Your wife might, when she comes home and finds you disassembling the furniture with a wild look in your eye, though.

Best tool I have ever had for for cabninet installation, window installation, or general lighter duty needs. I have driven screws in to hardwood stiles with no problems. This driver is so light and compact it allows you to fit in tight spaces that a regular impact driver cannot fit and with the holster you hardly notice it is with you. For constant heavy driving needs I use my 18 volt Mikita. I would say that 80-90 percent of the time the Bosch PS-40 is all that is needed.

From reading these reviews it seems that there is a lot of confusion about the Bosch 10.8-volt line of compact tools. This review is about the PS40 impact driver. Bosch also offers the PS20 which is a similar driver that does not have an impact motion and the PS10 that serves as a variable angle driver that is good in tight spaces.
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br /The impact function simply means that there is a hammering effect on the back of the bit and this forces the bit forward so it won't slip out of the screw slots and strip them. You do not have to lean on the driver to keep the bit and the screw engaged. This works in forward and reverse.
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br /The term "driver" means that the primary use of these tools is to drive screws, nuts and bolts rather than to drill. The instructions with the PS40 say to NOT use it as a drill. Drivers are slower than drills, only 400 rpm, and really aren't good at drilling. I experimented and you can drill small holes, up to maybe 1/4, if you stay away from deep holes.
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br /All of these drivers have a chuck that takes only hex-head bits and drills. This is a quick and secure way to attach things. There are millions of drivers of every size and variety that fit this system (Bosch calls it "clic-change"), but only small sized drill bits because that is all these tools can handle and the hex part isn't big enough for bigger bits anyway.
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br /The PS40 is excellent for what it is designed to do. My first task was to remove rusted old screws from a rusted old gutter, one handed with no way to apply pressure. The PS40 kept the bit engaged with the clogged-up slots in the screw heads and they came right out. I also plan to use it for installing a lot of drawer sliders. It is always hard to tighten those screws without stripping them.
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br /I would say that this is one of those must-have tools. I would never throw away the big drill and you will only frustrate yourself if you think you are going to drive giant screws through decks all day.
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br /Note that Bosch has come out with 12-volt versions of these tools. Reviewers have noted that the specs seem the same and so there is some confusion. In any case, the 1.2 volt difference is not going to be noticed and the 10.8 versions are cheaper.

I have Makita, Ridgid, Milwaukee, I drivers, and this is great for the size. The run time is not going to be like a larger battery tool, you buy this for the small size and power/weight ratio. It will easily sink 1/4" lag screws on a full charge but I do not expect it to act like an 18v driver weighing 2-3 times as much. LiIon batteries will discharge in the cold so I think that maybe the problem for some. Store these type of batteries inside. There also may be a quality control problem with the batteries but I doubt it since the PS-10 20 seem fine with the same batteries in the reviews, the impact driver do draw more power and it is a small battery pack. [I have both PS-10 20 tools too]
br /The feature I would like, is a autolock on the shaft to allow final hand adjusting of the fastner but no impact I know of has that feature.

I admit that I was dubious about this driver, especially given its price. But after owning one for four months now, I don't know how I got along before without it, and it's worth every dollar I paid. It isn't so much that the driver is faster at setting screws -- I don't think it is actually. But it absolutely minimizes the things we never count on that really eat up time: stripped screw heads, sheared off screws, split material from driving screws too deep.
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br /It's got great balance, is nice and compact, has amazing torgue and excellent battery life with very quick recharge. The LED lights around the collar work extremely well and can be turned on without engaging the driver itself -- very handy in dark places under counters, in crawl spaces, etc. It is rather loud, however, especially in closed spaces, and you may want to wear hearing protection. It's not a tool you'll want to use in your basement shop after everyone else in the family has gone to bed.
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br /You may need to buy higher-quality bits with this driver, especially if you work in cold conditions. I've had to stop buying the bulk bits they sell from the bin by the cash register in my local hardware store. This driver will fracture them if they're not perfectly inserted in the screw you're driving.
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After a year in my home woodworking shop this little jewel was the first driver I reached for. It's super-light handy and the built-in light is a godsend when screwing in drawer slides in the back of a dark cabinet. I recently rebuilt my front porch porch driving 2 3/4 inch screws through composite decking into treated lumber. Again it was the first tool I reached for but ---. It USUALLY got the job done but very slowly and I felt like I was pulling a semi-trailer with a 4 cylinder pickup. I began to worry about wearing out a great tool in one project so I switched over to an old Craftsman 18V drill and things went much better.
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br /This is a great driving tool for light to medium work. And the impact mechanism seems to be especially effective when removing old corroded fasteners. Just don't expect it to frame a house or build a deck.

Got this about a month ago, works well for a small lightweight driver. Drives sheetmetal and sheetrock screws perfectly well, drives nuts and bolts with a socket attachment reasonably well. Even drives lags, but not very quickly. I use it daily as an HVAC installer and find it to be quite handy, you never even notice it in your tool belt. Got my set at Home Depot and it came with the flashlight free, a useful addition - I swear the driver, light, two batteries and charger weight less than my Ridgid 18V impactor with single battery.
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br /I've even used this working on a few cars, removes lots of small fasteners quickly and easily. The built in LEDs are awesome.
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br /I carry it into my house each night to avoid letting it get cold. If you use cordless tools in the cold all day or MUST leave your stuff in the truck overnight, Ni-Cad batteries are where it's at.

AWESOME, this a a VERY handy impact gun, no electric chords, etc.
br /IS lightweight.
br /Has neat led's that light up when you pull the trigger to allow you to see what you are doing, this becomes handy all the time.
br /The batterys (comes with two) charge quickly, are light, compact, and just plain neat!
br /The impact features a quick attach system, which is good and bad, depending on your intended use.
br /Impact could use some more power, but works for most tasks.
br /This is VERY durable, one time I did not have a hammer handy, so i took the impact and slightly banged the back of the imopactor into a big ol' steel screw, and the impact thus proved itself to be exceptionally durable! Suprisingly!
br /This is an absolutly wonderfull product and I couldn't see doing without it!
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I am a long-time fan of Bosch tools. I own about 10 of them including the super-accurate Bosch portable table saw and several Bosch routers. My recently-acquired impact driver is one of the best. If you need a machine screw torqued tightly down, or for that matter, broken loose from its rusty grip, you can't miss with this lightweight-but-powerful unit. I also own two other Bosch lithium ion battery powered screwdrivers including the 90-degree close-angle driver and the standard pistol-type driver. Each of them will run just about all day long without recharge and then take just 30 minutes charge to be ready for another day's work. You really can't go wrong with Bosch.

Would be 5 stars, but wish it had a few more RPM's so it could drive the screws a little faster. Battery life isn't quite what they advertise, but it doesn't take long to charge them up.

Of several impact drivers I own, this is the one I try first, if it is too puny for the job, I go up the scale, 12v, 18v. The light weight is nice and the compact size fits many small jobs. One place that the impact drivers are really handy is taking stuff apart. I had to dismantle some deck benches, the galvanized screws were pretty well seated and coroded, the impact was the secret weapon to get that initial twist to back out screws without ripping up the screw heads. Also, the LI battery is always ready to go, they do not go dead on the shelf. One downside is the placement of the Fwd/Rev switch, I would rather have it on top of the tool, too easily bumped as it is.

I am a woman and I use this myself a lot, it is light and very powerful

This is the best power tool I have had so far. High quality workmanship - it is a pleasure to hold it in your hands. Very powerful. I have never used impact drivers before. This was a real eye opener. I used to use large corded drill to drive large screws. This does better job: (a) breaks less screws (b) drives them better by not breaking the thread in material (c) unscrews them better. The battery lasts long and charges very fast. I love how I can finally have the tool on the belt as it is so small. I also love the built-in light - works miracles in dark places!
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br /I only wish this could also be used as a drill driver as I don't want to have two almost identical tools - one for screw driving and other for drilling. Why not have a switch on one tool to do both jobs?

I got tired of using a huge impact because of the weight and mostly because it was just too much on anything medium sized or smaller. Fun to play with but you get tired of tearing out broken screws and bolts. This impact fits the bill for the smaller stuff and works very well. I should have gotten this a long time ago.

This drill is impressive. Very surprised at how much power this thing has. As soon as you pick this up you can feel the quality in respect to: the plastic used on the body, grips, and balance of tool. Three LED Light system is very bright and a nice touch. The noise will get to you if using it in a repetitious manner. If driving long screws into say pressure treated lumber like building a deck you will go through the batteries fairly quickly. Other than that HIGHLY RECOMMENDED!

Recently I purchased one of these Bosch 10.8 volt impact drivers from Home Depot. Originally priced at $199.00 marked down to $99.00. Well, I couldn't pass up a deal like that. It's small size and weight are over shadowed by it's performance. It works GREAT!!!

O.K., this thing is not an industrial strength monster. But for a very small, comfortable, rechargeable driver I think it's great. I'm installing hardwood throughout and needed something to screw down the underlayment. At this point I've driven about a jillion 1 1/2" screws, and I'm happy with it. The batteries recharge quickly, so by the time I've expended one the other is ready to go. I'm taking one star off because it is fairly noisy; ear protection recommended if you're working on a big job.

This product is all it claims to be and more.
br /It has replaced my 12V and 14V drills. I use it to put together all my woodworking projects at this time. I also have the sister to this one and together they make an unbeatable pair.

Product works great. Only has a 1/4" hex quick change chuck which does not take any 3/8" items, watch this in add-on sets. I compare this to an older Bosch 3670 1/2" hammer drill which is more than 4 pounds heavier.
br /Both can drive 4" deck screws beyond flush but the older drill would need square drive screw heads to avoid stripping the head. The impactor can drive philips head screws without stripping. It runs up the screw at almost 1800 rpm until resistance is met, then starts with impactor action. If you continue to push past flush, it can effectively countersink the screw. While not designed as a drill, it can be used as one as long as you have a light touch and clear the hole frequently which is good when you are up on a ladder and don't want to go back to get a drill. The impactor action also does not wrench out of your hand when resistance is met by the fastner as it would with a drill/driver. Only downside is how much noise an impactor makes once it kicks in, but as has been quoted before, "with great power comes great responsibility".

I am a 35 year electrician. I bought this drill with a little bit of caution. My worries were soon forgotten. I love it. Does anything I ask. Drives screws or tapcons in concrete. Would recommend this tool to anyone.
br /I own all Bosch power tools and this one is at the top of the list.

I just want to say that I couldn't be happier with this tool. I had been using a cordless drill to drive screws and when my drill died in the middle of a big cabinet job I decided to try this one.
br /Its small size at first caused me to 2nd guess my purchase but as soon as I pulled the trigger I knew it was going to be a good tool. The small size is a real advantage, it gets into tight spaces easily. The LED lights on the front end is really nice when working in darker areas (inside cabinets). Its got loads of torque and the cute little batteries really provide plenty of run time.
br /I've driven 2 1/2 wood screws on a deck project and the little driver wasn't even phased. It worked perfectly.
br /If I had a complaint it would be that the impact driver is a little loud, the performance is worth it and I can highly recommend this tool.

I ordered this driver as a Christmas present and was pleasantly surprised by the power this thing has with just a 10.8V battery. One must become conscious of that torque when you are driving screws so that you don't strip them out when they stop.
br /It is a nice alternative to my Dewalt 18V Nicad drill/driver that probably weighs twice as much.
br /The kit came with a charger, two batteries, and a flashlight, that I didn't expect, all in a compact case that keeps it all together nicely.
br /A good value for the money.

I bought the PS40 and recently used in for a couple of kitchen remodels. It did an adequate job but I needed to use my 14.4v Dewalt impact driver to set longer screws through the cabinet frame and drywall into the studs. The PS40 did fine with shorter screws. I recently used the Milwaukee M12 impact driver and it has noticeable more torque. I would definitely buy the M12 over the PS40 if I had to do it all over again.

Everyone at work has an impact driver, diverse in brands, I chose the Bosch 10.8 impactor, because I already have the 10.8 adjustable driver(not the pocket driver that looks similar to the impactor). It uses the same battery, and it's small. I have shoulder and elbow issues, so when I need to do anything overhead, it's a bonus, because it's light and I can use my long extension bits to also help with hard to get to places. Like any battery though, they like to be warm, so if it is cold at night and I leave them in my vehicle, they don't like to get used. So I just let them warm up and they are just like when I started with them freshly charged. I highly recommend it, especially for the odd jobs and I wouldn't use it to put down a big deck, save that for the regular drivers.

I've been looking for an electrical screwdriver for some time. I was willing to pay more in order to buy something that would last longer. So I bought this PS40. I don't have it for a long time, but I am very happy with it. Around the house is everithing I need. I also bought a set of bits/drills/.. (Bosch CC... something, I forgot what is was). Together they are perfect.

Terrific tool, love it.
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br /But Amazon suggests you get the Bosch Clik-Lock set along with this. However, that does not fit this tool at all. They SHOULD correct this error.
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br /I kept the clik-lock set, because it's nice and I can use it in another cordless drill I have -- just not in these Li-on Bosch drivers.

It is a great tool. Charge last a long time. Very powerful. Love it

I really like using this tool. The small size fools you. I also like the led lights and the quick change of drills or driver tips.

For the size and weight, this is the most powerful drill I've ever used. I have been using it to drive 3 inch deck screws into studs, as well as around-the-house chores such as hanging doors. The advantage of this drill is that you can just carry this compact drill around and accomplish most DIY tasks with it. I've framed-out an entire bathroom with this drill. I've even used it to drill out 1" holes in studs.
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br /The light comes in handy, especially in dark corners so that you don't have to wear a silly headlight or have a friend hold up a flashlight.
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br /Some people have been comparing this drill to the Makita 18v driver, and that's just silly. That's like saying an inline-4 engine can't hang with a V-8! It's not comparing apples to apples. Of course the 18v driver would have more torque. Plus, that huge base battery on the Makita makes it too unwieldy for tight spaces.
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br /If you were to buy 1 cordless drill to have around the house, then this is it.

great tool , great size, could use little more power, but all in all it's hard to beat. -Brett.

Own a sailboat and this has become my onboard tool. Fits into tight spaces where normal drills can't go. Great tool.

Lightweight, high torque, long battery life, and great speed control. Could only improve if they magnetized the chuck so that you could throw in a non-indented bit in a pinch.

WOW 800 inch pounds of torque in a tool that small. For medium to large size work this pup is ready, willing and able. I have all 3 of the Bosch 10.8 tools, love them all, wish they had come out years ago before I spent all that $$$$$ on those big 18 volt monsters I used to lug around the shop. Once in a while I still use a 18V drill, but mostly I let my arm take a break with these mini marvels. Oh yeah, in case you haven`t moved up, L Ion is great.

As a electrical contractor I install many electical fixtures using screws, I have used a 14.4 Makita impact driver for many years. that all ended the first time I tried the bosch impact driver, its very light, fits into a tool belt and has enough power for most screws I use. It is not a complete replacement for a Full Sized Driver, but it covers 95% of the work I do.

A perfectly sized drill with plenty of guts to get the job done... nice weight in the hand, fit and finish excellent.

After much lamenting between the Bosch PS40 and the new Makita BTD142HW 18V 1.5 amp hour Li-ion Compact Impact Driver, I decided to give the Bosch a try first. I have other Bosch tools and the build quality is great. The tool is well balanced and the light works well. Unfortunately it just didn't have enough power or speed for 2 1/2" deck screws into pressure treated compared to even my 12V standard Ni-Cd Ridgid. Way to slow once the impact action started. Perhaps I'm another victim of you either get a powerful one or a weak one. Took it back and bought the Makita today. The unit is only a fraction heavier but much more power and speed. It buries screws with ease and is very very fast. I like the chuck better too. For the homeowner or electrician I think the Bosch is a great tool; beyond that I'm not convinced.

I guess one of the writers above me said it best, there must be strong and weak ones. I use a Dewalt hammer drill, 18 volt all day most days. This drill is difficult to fit into some of the places I was to put 3 to 4 " screws in. So I began looking at impact drivers.
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br /I love Bosch, I bought their top of the line jig saw and nothing performs close to it. So, when I saw this little PS 40-2, I thought it might be just the thing. The only thing that bothered me was the 10.8 volt system. Everything else I use is 18 to 36 volts.
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br /I bought it and charged up both batteries. I couldn't wait to get it out on the job. First day I was driving 3" lags into pressure treated posts. Didn't take very many of these to run down the battery. And the speed wasn't enough to slam em home. The Dewalt came back out and I finished the job. The Dewalt has 3 speeds and I use it on #2.
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br /I've used the Bosch on some lightweight fasteners and it works pretty well. But to me, an impact driver should be stronger than a hammer drill. I gave it to my wife and she is delighted with it. The small size and the light weight make it perfect for her DYI projects.
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br /For the price, it's a great buy for light weight fixing around the house.
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br /Daniel

Although the design and construction of the PS40 is very good, mine did not produce much torque. Bosch claims 800 in-lbs of torque, but I doubt it. For example, I attached a 1/2" socket and tried to remove a 5/16" machine bolt. The PS40 couldn't do it - not enough torque. I then used a hand wrench to remove the bolt, and it only required a moderate amount of effort to do so. My old Milwaukee impact driver had no problem removing bolts of that size. As another test I held the socket with my hand as I pulled the trigger all the way back. I was easily able to prevent the socket from turning. And this was with a fully charged battery.
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br /It might be good for hobby use, but not in an industrial setting. I returned mine to Amazon for a refund.

Hey, I have all three bosch litheon-ion small drivers and probably this is the best except for the occasionally useful right angle one.
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br /I don't know why I wasted my money. With the first one, my then boss got really mad at me for using a 'toy' on the job. Gotta admit it was slow, but it was good for door hanging screws and such and fits in a tool pouch easy. The coolness factor and all. (and that 'boss' was a general prick anyway.) I found the right angle lith-ion tool to have great special uses but again very weak in driving and screwing.
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br /I thought Lith-ion batteries were the best but after trying them last winter....they don't work in the cold. Amazingly not there. And the 'experts' said they'd be better in the cold...they were wrong.
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br /This one is probably the best of the lot with the ratchetdrive impacter and lights. It might be as powerful as the old Makita 9 volt of 20 years ago...but just barely. The light is very good though and for doing cabinet installs and small screws nothing is better... but don't expect it to be an all around tool. I'd get the smaller Dewalt 18 volt impactor. I have two Bosch ones and one light gave out on one of them (it was really not bright anyway) but they are much more useful..but i find Dewalt's 18volt line to be cheaper and with better batteries although their very expensive Nano Lith-ion battery isn't much better and also seems a bit weak in the cold.
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br /Bosch was my favorite tool but I am having second thoughts, Makita and Dewalt are getting more $ from me...although the Bosch battery jigsaw and planer are unsurpassed.

Reading the other reviews it seems like you get either a weak one or a powerful one, I got a weak one. I really have no idea what you would use this thing for if they're all like this. The PS-20 pocket driver is awesome and while far from perfect the I-driver has it's uses but this thing is worthless.

I paid $199 for this driver at lowes, I broke my makita 14.4 2.6ah ( my bad, not the drivers) I was in the middle of building a deck. so I read the reviews and need something right away, This bosch PS40 driver does not have any guts at all You cannot and will not be able to do anything bigger than hang small doors, I just order the makita combo kit from amazon for the same money, Even at the new lower price. There are lot better choices out there

As an electrician, the need to screw and unscrew hundreds of small and medium screws quickly is almost infinite. I've been dealing with the oversized cordless drills for a long time and was happy to get Bosch's little driver, but that was a mere 400rpm's. My helper was delighted; everyone on the job kept borrowing it.
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br /It seems like it's been about two years since cordless impact drivers began to show up on jobs. I saw sheet metal guys and drywall guys using them and an occasional carpenter. I knew the rpms were way up there, but I wasn't sure the things would work on little bitty 6-32's. Now that I bought the Makita Makita LCT300W 18V Compact Lithium-Ion 3PC Cordless Combo with a 2300rpm speed, I kinda' wish I had gone with the much smaller Bosch impact version at 1800 rpm instead (easier to stick in your pocket) .
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br /But I couldn't wait... Fact is, these new impact drivers are the new supertool of today, just like the rotary hammers that replaced hammer and chisel I was forced to use just three decades ago. The material almost seems to suck the screws in.
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br /An edit: I should have mentioned that I don't own it, only tried it. Should have been five stars. I'll also mention that Milwaukee's version is much slower in RPM's. Bosch's is the one to get.

This is not a bad tool. It is an overpriced (though sexy) toy. It costs as much as their 14.4 impact (which is the best on the market in it's class) with nowhere near 1/2 the power or run time. It is lighter and slightly smaller, but disappointing in terms of performance. I would reconsider its merits if it were sold as a bare tool. As it is, I have the 3 drivers 6 batteries, and 3 chargers. Once in a while, it is convenient to have a small driver. The I-driver does what no other tool can do. I wish the PS20 had a regular keyless chuck. Having to carry all 3 bags around is ridiculous, and I wish I could get my money back on the PS40.

This tool does not perform up to the claims made by Bosch. The impact has no torque or speed. With a full charge the batteries only lasted for about 25 3" screws in 2x4 soft pine. This would be a great tool for hobbyist, or if you needed to put some screws into styrofoam. Any one that makes a living with their tools will be very dissapointed in this impact driver.