Battery life is good to excellent. I have used several times and it works well. As strong as an 18V from other brands. I just used it to install a door stop. This was verified with a torque wrench.
DEWALT DCK720D2 Features & Specs
Dcd780 drill has a high speed transmission that delivers 2 speeds (0 600 & 0 2, 000 RPM) and the Dcf885 impact driver offers 1 handed loading for its 1/4 inch hex chuck that accepts 1inch bit tips
DCL040 flashlight illuminates your work area with LED output of 110 Lumens, and DCG412 grinder has an 8, 000 RPM motor with high power for cutting and grinding applications
Dcs393 circular saw can cut 2x4's at a 45 degree angle in a single pass, and Dcs381 Recip saw with keyless blade Clamp allows for quick blade change
Dcr006 Speaker runs off DEWALT 12V/20V max* battery packs and has Bluetooth 4.0
DCB203 20V max 2.0Ah compact XR li ion battery pack provides up to 33 percent longer run time and compatible with the entire line of DEWALT 20V max tools
*Maximum initial battery voltage (measured without a workload) is 20 volts. Nominal voltage is 18
Batteries: 1 Lithium ion batteries required. (included)
Power Source: Battery Powered
Voltage: 20 volts
Warranty: 3 year limited warranty
Editor's Impressions Of The DEWALT DCK720D2
Tool Motor Power
Torque
Value For Money
Build Quality
Feature Set
DEWALT DCK720D2 Final Thoughts
"The finish is good."
I don't need to buy any other parts. Excellent value I’m my opinion. Lithium Ions are the best and longest lasting. I don't need to buy any other parts. Got really hot but did the job.