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Model#: DEWNDCST990M1
Condition:
New

What are the different product conditions?

New
Brand new items;Full manufacturer warranty available
Reconditioned
Manufacturer inspected, repaired and tested items; CPO 120 day money back guarantee
Open Box
New items with possible minor cosmetic damage; CPO 120 day money back guarantee
Certified
Returned items inspected, repaired and tested by CPO technicians; CPO 60 day money back guarantee

Dewalt DCST990M1 40V MAX XR 4.0 Ah Lithium-Ion Brushless 15 in. String Trimmer

New $249.99
Recon $149.99
List:
$329.99
Sale Price:
$249.99
You Save
24%
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  • Due to federal regulations, this product can only be shipped within the continental US. Express delivery not available.

Product Overview

Details

The 40V MAX String Trimmer features a patented gear drive design for amplified torque when powering through overgrowth. The bump feed head provides 15 in. of swath with DEWALT's 0.080 in. line (0.095 in. line is also compatible). The variable speed trigger offers precise power control as well as performance and runtime management with the Hi/Lo speed control switch.
Features:
  • 15 in. Cutting swath with 0.080 in. line (also accepts 0.095 in. line)
  • Patented gear drive design that powers through overgrowth
  • High-efficiency brushless motor maximizing run time and motor life
  • Variable trigger with hi/lo speed control for added power or extended runtime
  • Part of the 40V MAX system of Outdoor Power Equipment
Includes:
  • 40V MAX XR 4.0 Ah Lithium-Ion Brushless 15 in. String Trimmer - DCST990
  • 40V MAX 4.0 Ah Lithium-Ion Battery - DCB404
  • 40V MAX Lithium-Ion Battery Charger - DCB114
  • 0.080 in. Pre-wound Line in Spool
Compliance and Restrictions
warning: Cancer and Reproductive Harm -- www.P65Warnings.ca.gov/product

Specifications

Series: 40V MAX XR
Cordless: Yes
Weight: 13 lbs.
Batteries Included: 1
Battery Amp Hours: 4.0 Ah
Battery Type: Li-Ion
Cutting Width: 15 in.
Drive Shaft Style: Straight
Drive Shaft Type: Fixed Shaft
Handle Type: Wrap-Around
Line Diameter: 0.080 in.
Line Feed System: Semi-Automatic
No-Load Speed (RPM): 0 - 6,600
Speed Settings: 2
Voltage: 40V

Recommendations

Reviews

4.5 / 5.0
20 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
15
3
0
0
2
Recommendations
Yes, I would recommend this to a friend (11)
No, I would not recommend this to a friend (2)
Pros
Powerful (11)
Lightweight (6)
Cons
Heavy (1)
Best Uses
Frequent Use (1)
needed string trimmer, no oil or gas, after reading all reviews of DeWalt cordless trimmers the choice was easy. The 40 volt. I was hoping it would be the 20 volt or 60 volt as I have many tools using those batteries , but ease of use and power all pointed to the 40 volt and I am very happy with it. Having got the 40 volt trimmer it will now be easier for me to get other 40 volt DeWalt yard tools.
June 14, 2018
Best buy I have made in a long time
This machine has more power than any gas weed eater I have bought in the past. cutting mostly weeds and not grass. Use safety glasses as noted. Great to have a battery powered tool that negates all the problems with gas tools.
June 23, 2017
Very nice tool
I like how it cuts the weeds quickly. The battery only lasts about 30 minutes for me, but my body wants to quit before then, so it is fine. I just work until the battery drains and then go recharge it and take a break.
April 14, 2017
Recommendations
No, I would not recommend this to a friend
Could not even get the battery to charge!!!!
I could not even get this product to charge.. Like the manual says the light will blink when charging 12 Hours and still blinking I will see if I still get the blinking light tomorrow if so it goes back to Lowes!! I guess there is no quality control at DEWALT anymore!!
August 27, 2016
Recommendations
Yes, I would recommend this to a friend
Pros
Powerful
Headline is very descriptive and concise
Powerful trimmer with plenty of battery life for my uses. The double string forces bumping when one string breaks before the other and that causes a little line loss each time.
August 3, 2016
Recommendations
Yes, I would recommend this to a friend
Pros
Powerful
Lightweight
Outstanding poroduct.
Use it for weeding, it has plenty of power.
August 1, 2016
Recommendations
Yes, I would recommend this to a friend
Pros
Powerful
It works good, powerful, but HEAVY!
Had trouble with self feeding but finally got it working good
August 1, 2016
Recommendations
Yes, I would recommend this to a friend
Pros
Powerful
Lightweight
Great Trimmer
I replaced my 4-Stroke Honda trimmer with this battery powered Dewalt trimmer. The Dewalt is lighter and has significantly less vibration. The power is as advertised - as good as a gas powered trimmer. I highly recommend this purchase.
July 25, 2016
Recommendations
No, I would not recommend this to a friend
bought 2 and both cut to 50% power within minutes
I bought the refurb units.....they run fine if working.....but after a few minutes of running they seem to start running at 50% less power. We switched other batteries and it still does same thing - so not a battery thing. Odd it happened to 2!! Just gave up.
July 12, 2016
Recommendations
Yes, I would recommend this to a friend
Pros
Powerful
Lightweight
Hassle Free Yard Work
I live in Arizona, before I apply weed killer, I use the trimmer to knock down the weeds first. 40 volt battery, and I also bought a leaf blower and hedge trimmer. and they all use the same battery. I don't want to hassle with electrical cords or gas and oil mix.
June 16, 2016

Questions & Answers

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Browse 10 questions Browse 10 questions and 10 answers
Will the 20 volt work with the 40 volt
todd on Aug 2, 2016
BEST ANSWER: No, the two systems are not cross compatible
how do you put new line on spool?????????????????
we have tried for over a half hour.
please help.
thanks
Michael on Jul 9, 2016
BEST ANSWER: Please contact Dewalt direct for technical support. You can reach them at 800-433-9258
Where can I get a replacement spool of string
Oly on May 7, 2016
BEST ANSWER: Cpo does carry replacement spool of sting or this item.
Dewalt DWO1DT802 0.080 in. x 225 ft. String Trimmer Line $13.99
Dewalt DWO1DT801 0.080 in. x 50 ft. String Trimmer Line $6.99
Is the recon 40 volt dewalt string trimmer included in the free battery rebate program
Flapp on Apr 27, 2016
BEST ANSWER: No,Dewalt is not running a free battery promotion for the string trimmer.
how long of time in one continual use do the battery last ?
Unlucky on Dec 11, 2015
BEST ANSWER: The battery run time will range from 15-30 minutes based on usage
I noticed an extended flat plate at the base of the battery housing. is there a wall hanging accessory for this plate to hang on? If so, where do I get one?
Fernando, retired on Jul 7, 2015
BEST ANSWER: This trimmer does not come with a wall mounting bracket nor is there a dedicated bracket.Might want to try the Gladiator wall mounting kit.
What is the expected life time of the battery for normal home usage?
RB on Jun 14, 2015
BEST ANSWER: The battery lasts about an hour.
Does DeWalt make an edger
PONCHO on Jun 5, 2015
BEST ANSWER: They make a trimmer but not an edger at this time.
How long does it take to recharge the battery? Also how long do these 40V batteries last?
Yard Diva on May 10, 2015
BEST ANSWER: This kit comes with a 45 minute charger. Theoretically, the battery will last 45-55 minutes. Practically, it depends on how hard you push the unit.
How long is the battery life before next recharge?
Tony on Apr 23, 2015
BEST ANSWER: That really depends on the usage. In our estimates that battery cycle can range from 25 - 50+ minutes depending on how its used.

New Vs. Reconditioned

What's the difference between New and Factory-Reconditioned?

Factory-Reconditioned products have been returned to the manufacturer and are restored to like-new operating condition; they go through a rigorous testing and inspection process. Plus, they offer a significant savings vs. new.
  • Reconditioned products may have minor cosmetic blemishes or scratches that do not affect item performance.
  • Reconditioned products may not come with all of the consumables the new version comes with (bits, sanding pads/papers, cases, etc.).
  • Both come with a manufacturer warranty and are covered by our Money Back Guarantee; New is 30 days, Reconditioned is 120 days.
Condition: New Factory Reconditioned
Features: Same Same
Specs: Same Same
Includes: 40V MAX XR 4.0 Ah Lithium-Ion Brushless 15 in. String Trimmer - DCST990,
40V MAX 4.0 Ah Lithium-Ion Battery - DCB404,
40V MAX Lithium-Ion Battery Charger - DCB114,
0.080 in. Pre-wound Line in Spool
40V MAX Cordless Lithium-Ion XR Brushless 15 in. String Trimmer - DCST990R,
40V MAX 4.0 Ah Lithium-Ion Battery - DCB404,
40V MAX Lithium-Ion Battery Charger - DCB114,
Auxiliary Handle and Guard
Availability: In Stock In Stock
Warranty: null 1 Year Limited
Price: $249.99 $149.99
You Save: N/A $100.00 (40%)