DEWALT DC927KL 18-Volt 1/2-inch Lithium Ion 18V Cordless Hammerdrill/Drill/Driver with NANO Technology

List Price: $671.97 Discount Price: $349.00

Features:

• DEWALT built high power, high efficiency motor delivers 425 unit watts out of max power for superior performance in all drilling and fastening applications
• 18V high performance battery pack provides longer run-time and battery life than 18V systems
• Patented 3-speed all-metal transmission matches the speed to the application for optimal performance
• Heavy-duty 1/2¿ self-tightening chuck tightens throughout operation providing superior bit gripping strength
• Enhanced durability and reliability to withstand the job-site environment and the most demanding applications

Accessories:

DeWalt DC9320 Heavy-Duty 7.2 Volt - 18 Volt Dual Port Charger

Customer Reviews:

DeWalt DC927KL Li-Ion Hammerdrill/Driver [Posted on 2007-11-11]
January-5-2008

I purchased the DC927KL at the beginning of November 2007. However, the rotational brake mechanism failed earlier this week after just light use in the past two months.

The drill is better balanced than the DC925, the half pound lighter weight is noticeable. The separate torque and mode selector rings make it very easy to use. DeWalt seems to have solved the problem with the DC925 and earlier models of it being difficult to switch from one speed range to the other.

The DC927 worked well in drilling wood (up to 1/2"), and 5/16" (and smaller) holes in concrete and brick. It has a nicely adjustable clutch for driving screws.

The circuitry in the Li packs makes it difficult to know when you are near the end of the useful charge of a battery pack. The battery will not run the drill (or even make the bulb in a DW919 worklight glow) when the pack gets below a certain point. Apparently the Li-Ion cells have to be protected from a potentially damaging complete discharge.

Great all around drill [Posted on 2008-06-27]
I was a little surprised to see only one review on this drill and a poor score. Breakdowns happen with tools, which is acceptable if the problem is not a pervasive one. I have owned many Dewalt tools and have only had one trigger go bad. With Dewalt's warranty it was quickly repaired.

As for tool performance, I love this drill as it combines driver, drill and hammerdrill functions in one tool. I build decks and use this drill for pilot holes, boring larger holes for carriage bolts, and drilling anchor bolt holes in concrete. While it isn't a perfect tool for these jobs, the versatility makes up for it. The only alternative is buying a dedicated tool for each use such as a dedicated hammerdrill. Because the drill is necessarily heavy to accomodate the hammerdrill function, I use a Dewalt Impact Driver for driving screws, as it is lighter and the impact function makes it so easy.

I have read negative reviews about the new Nano battery's shutdown feature when it reaches a certain discharge level. I happen to like this feature. The battery delivers almost full power right up to the point of shutdown, helping me avoid the temptation to keep driving with a weak battery and using the drill like a screwdriver on those last couple screws, which is hard on the drill. Second, I believe this feature will result in a longer cycle life for the battery, since the number one reason for premature battery failure is inconsistent charging cycles, i.e. charging the battery when it's half drained one time and totally dead the next time. With the Nano, I just run it till it stops, then charge. I know I am cycling it consistently.

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