Free Shipping and No Hassle Returns
Free Shipping
We offer free shipping on orders over $199.*
No Hassle Returns
Don’t like it? Send it back. It’s that simple.*
Same Day Shipping
Most orders ship same day if placed by 5PM EST (M-F)
*Restrictions Apply. See Details »
Free Shipping on orders over $199 $99
Same day shipping on most orders
Need it before Christmas? Click here for Shipping Calculator
Model#: BDKNLST400
Condition:
New

What are the different product conditions?

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

Black & Decker LST400 20V MAX Cordless Lithium-Ion High-Performance 12 in. Straight Shaft String Trimmer

List:
$119.99
Sale Price:
$97.99
You Save
18%
Tyler Tool Protection Plans are not currently offered to residents of California
Qty:
-
+
In Stock
Ships Today
  • Need it before Christmas? Click Here for shipping deadlines.

    Christmas Shipping Cut Offs

    Enter your zip code for estimated shipping dates

    Order by the dates below to get delivery by Christmas
    Standard Delivery *Enter zip code for order by date
    Express Delivery
    Priority Delivery
    Premium Delivery

    Orders must be placed by 5PM EST.

    Certain items require 2-3 business days to ship and is clearly indicated on the product page. These items cannot be expedited.

    Delivery times on Economy and Freight orders vary, exact delivery date cannot be determined.

  • Due to federal regulations, this product can only be shipped within the continental US. Express delivery not available.

Product Overview

Details

Black & Decker's LST400 offers homeowners a versatile yet powerful tool ideal for basic trimming and lawn maintenance needs. Part of the 20V MAX Series, the LST400 runs off a powerful Lithium-Ion battery for cord free operation, letting you trim where you need to without snagging while still providing the power of a corded trimmer. Featuring dual mode operation for higher performance needs, the LST400 can deliver up to 7,200 RPMs for serious trimming action.
Features:
  • Patented power drive transmission delivers continous high-performance cutting action
  • Automatic Feed Spool (AFS) ensures trimmer line is continuously fed without the need for bumping or manually changing
  • Simple to start and quiet in operation
  • Adjustable cutting height and pivoting handle provides maximum control in both trimming and edging applications
  • Dual mode operationg with power saving for extended run times and high-performance when needed
Includes:
  • 20V MAX Cordless Lithium-Ion High-Performance 12 in. Straight Shaft String Trimmer - LST400
  • 20V MAX 4.0 Ah Lithium-Ion Slide Battery - LB2X4020-OPE
  • Charger
  • 0.065 in. Auto-Feed Trimmer Line Spools - AF-100
  • Cutting Guard
  • Auxiliary Handle

Specifications

Series: 20V MAX
Cordless: Yes
Batteries Included: 1
Battery Amp Hours: 4.0 Ah
Battery Type: Li-Ion
Cutting Width: 12 in.
Drive Shaft Style: Straight
Drive Shaft Type: Fixed Shaft
Handle Type: D-Handle
Line Diameter: 0.065 in.
Line Feed System: Automatic
No-Load Speed (RPM): 5,500 / 7,200
Speed Settings: 2
Voltage: 20V

Recommendations

Reviews

4.6 / 5.0
106 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
68
36
1
1
0
Would you recommend?
Yes (103)
No (1)
Pros
Lightweight (103)
Powerful (71)
Pros
Powerful
Lightweight
The wheel makes the difference
I've had great luck with all my reconditioned 20v products from CPO
April 25, 2016
Recommendations
Yes, I would recommend this to a friend
Pros
Lightweight
use it where the lawnmower won't reach, duh
Love the convenience of cordless. Ran it for 30 minutes on high power, still do not need to recharge.
Tall thick grass gets wrapped around spool if you don't sweep the weed-eater through the grass completely
on each pass. Also, the auto-feed does not always... possibly related to the 1st issue.
However, the spool is easy to open & pull more line out. To summarize, those 2 drawbacks to me are very
minor, and I think the 2 hours of online research I spent before buying this model payed off well.
Note: I went with new on this purchase, but do not have anything against reconditioned, just personal
preference... and the price difference was not much.
June 10, 2015
Recommendations
Yes, I would recommend this to a friend
Pros
Powerful
Lightweight
Just as promised, does an awesome job!
It works very well and easy to use. Line does not break all the time and no gasoline. Practically free to use.
January 15, 2015
Recommendations
Yes, I would recommend this to a friend
Pros
Powerful
Lightweight
Does the job
When I have a quick trim job and not worth starting up the gasoline trimmer, this does the job. Surprisingly good power and long-lasting battery. Only improvement(s)I would have appreciated are:
1) two cutting lines from spool 180 degrees apart as is found on gasoline-powered units
2) ability to handle better-cutting line rather than only round indicated by instruction manual
June 1, 2015
Recommendations
Yes, I would recommend this to a friend
Pros
Powerful
Lightweight
Love it
I have used this edger as both a trimmer and an edger. I especially like the wheel when edging against the foundation of my home. I just press the wheel against the foundation and roll the edger along the foundation making a very straight clean line. I do the same thing against the smooth side of a wooden fence. When I rotate the power head and use it for edging the wheel rolls very easily on the curbs, walks, and driveways which permits you to make a clean cut. It is much easier than other edgers I have used. At first I thought the wheel would get in the way but I was mistaken and after using it I love it.

The power head sounds weaker than gasoline edgers that I have used. However, I find that it cuts just fine for my purposes. Plus it is much lighter than the gasoline edgers (2 cycle and 4 cycle) that I have used. I edged and trimmed my home on a single charge and the battery was still going strong when I finished. I live on 3/4 of an acre so it's performance wasn't too shabby.

I have been very pleased with this purchase.
February 20, 2016
Recommendations
Yes, I would recommend this to a friend
Pros
Lightweight
Great touchup trimmer !!
I got the refurbished model of this trimmer. Looked new with no signs of use. The item was inspected in Mexico and had little insp. stickers all over it. Battery was charged when I received it. I usually spray roundup and don't trim, but CPO was almost giving these away so I purchased for touchup in between herbicide applications and around plants. Worked great for small jobs. Not as much power/speed as gas weedeater, (which needs a carb).I ran this intermittently for 20 min. switching between high and low speed. The battery still had power in it. Line fed from no bump spool without problems. I like it!!, Walt.
November 25, 2015
Recommendations
Yes, I would recommend this to a friend
Pros
Powerful
Lightweight
Great Buy!
I bought it for myself because I cannot start a gas motor. Can't pull the rope. It does an exceptional job on trimming my yard and is quiet. My 5 year old grandson wanted to try it so with safety goggles and long sleeves and pants he mastered it in about 2 minutes. Now he wants one for his birthday! Don't know how long that will last but it show how light it is and how it can be adjusted to fit a 67 year old grand pa to a 5 year old grandchild. As you can tell, I like it! I can only imagine how the 40 volt models work.

I would advise anyone who is in the market to buy one.
April 19, 2016
Recommendations
Yes, I would recommend this to a friend
Pros
Lightweight
Cordless trimmer
I have been using a gas trimmer for years. After working on the trimmer every year at the start of the season I decided to try the battery operated trimmer, I love this thing so much quieter and lightweight. I will be throwing the gas trimmer away this year.
April 27, 2016
Recommendations
Yes, I would recommend this to a friend
Pros
Powerful
Lightweight
Trimmer
Easy to use
June 28, 2015
Recommendations
Yes, I would recommend this to a friend
Pros
Powerful
Lightweight
great product
Easy start lightweight
June 30, 2015

Questions & Answers

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 3 questions Browse 3 questions and 3 answers
How. much does this WEIGH???
Mary Ga Peach on Jun 16, 2015
BEST ANSWER: This item weighs 8.5 lbs.
how much does it weigh
Peggy on Mar 10, 2015
BEST ANSWER: The weight is roughly 8 lbs.
What is the battery charge time for lst400 4 amp hour
Susan on Jun 13, 2014
BEST ANSWER: The initial charger for the battery is 10 hours.

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 60 days.
Condition: New Factory Reconditioned
Features: Same Same
Specs: Same Same
Includes: 20V MAX Cordless Lithium-Ion High-Performance 12 in. Straight Shaft String Trimmer - LST400,
20V MAX 4.0 Ah Lithium-Ion Slide Battery - LB2X4020-OPE,
Charger,
0.065 in. Auto-Feed Trimmer Line Spools - AF-100,
Cutting Guard,
Auxiliary Handle
20V MAX Cordless Lithium-Ion High-Performance 12 in. Straight Shaft String Trimmer - LST400R,
20V MAX 4.0 Ah Lithium-Ion Slide Battery - LB2X4020-OPE,
Charger,
0.065 in. Auto-Feed Trimmer Line Spools - AF-100,
Cutting Guard,
Auxiliary Handle
Availability: In Stock Out of Stock
Warranty: 2 Year Limited 2 Year Limited

Warranty

Warranty Information

Black & Decker Tools and Home Products

Warranted for two (2) years from date of purchase. This warranty does not cover damage resulting from negligent handling, misuse or lack of reasonable maintenance and care. (Proof of purchase maybe required).

Christmas Shipping Cut Offs

Enter your zip code for estimated shipping dates

Order by the dates below to get delivery by Christmas
Standard Delivery *Enter zip code for order by date
Express Delivery
Priority Delivery
Premium Delivery

Orders must be placed by 5PM EST.

Certain items require 2-3 business days to ship and is clearly indicated on the product page. These items cannot be expedited.

Delivery times on Economy and Freight orders vary, exact delivery date cannot be determined.