Is the DCF899M1 powerful enough for lug nuts?

Yes. It is a high-torque 1/2-inch drive wrench built for lug nuts and larger fasteners. Use the lower speed settings for smaller bolts to avoid over-tightening.

How does it compare with DeWalt's newer high-torque wrench?

The newer model is more compact and lighter with updated electronics. The DCF899M1 remains a proven, powerful option, but it is heavier and bulkier.

What battery does it use?

It runs on DeWalt 20V Max batteries and ships with one 4.0Ah pack. Any 20V Max battery from the platform fits.

Does it have a brushless motor?

Yes. The brushless motor gives more runtime per charge and a longer motor life than brushed designs.

The wrench, one 4.0Ah 20V Max battery and a charger. Sockets are not included.

Is it too heavy for regular use?

It is heavy at about 7.2 lb, which is fine for ground-level work but tiring overhead. For light jobs a compact impact wrench is easier to handle.

Where is the Dewalt DCF899M1 1x4.0Ah cheapest?

At eBay, for $39.19, 89% under what the other stores charge, as of our latest check.

Where can I buy the Dewalt DCF899M1 1x4.0Ah?

4 stores we checked sell it, including eBay, The Home Depot, Arbor, Grainger Industrial Supply.

Dewalt DCF899M1 1x4.0Ah Price History: $39.19 at eBay

What reviewers say

Owners rate it as a serious heavy-duty wrench that removes fasteners compact tools cannot. Most praise the power and battery life; the common complaints are weight and bulk.

What people mention

PowerPraisedOwners say it breaks loose lug nuts and rusted bolts that smaller impact wrenches cannot move.
WeightCriticisedAt about 7.2 lb it tires the arm quickly when working overhead or at height.
Battery lifePraisedThe 4.0Ah pack lasts through a full set of wheels and more on one charge.
SizeCriticisedThe bulky head and long body make it awkward in tight engine bays and wheel wells.
NoiseMixedUsers accept the loud hammering as normal for a high-torque wrench but note it needs hearing protection.
BuildPraisedOwners describe it as rugged and reliable over years of shop use.

From Arbor

Up to 700 ft. lbs. of max torque and 1200 ft. lbs. of max breakaway torque
Compact 8-13/16 in. length and 7.2 lb. weight for hard-to-reach areas
Multi-speed control: 0-400 / 1,200 / 1,900 RPM
Heavy duty 1/2 in. anvil with detent pin
LED light with 20 second delay for increased visibility
Brushless motor, 2400 IPM, forward/reverse rocker switch

Guarantee: 3 Year Limited Warranty, 1 Year Free Service Contract, 90 Day Money Back Guarantee
Shipping: Standard delivery per order to the 48 contiguous states; availability confirmed at order approval
In the box: Impact wrench, 4.0 Ah battery, Charger, Tool bag

About the Dewalt DCF899M1 1x4.0Ah

The DEWALT DCF899M1 Cordless 1/2 in. Impact Wrench is ideal for most fastening applications. This impact wrench features up to 700 ft. lbs. of max torque and 1200 foot pounds of max breakaway torque. The compact design of 8-13/16 in. length and weight of only 7.2 lb. allows the user to get in hard to reach areas and extended use. Multi-speed control for a variety of applications (0-400/ 1,200/ 1,900 RPM) Heavy Duty 1/2 in. Anvil LED light with 20 second delay for increased visibility Includes ba