BLACK+DECKER Cordless String Trimmer/Edger - Adjustable Height - Automatic Feed Spool - 20 V (Battery included)

Article #22465094 Model #LST522 Format20V 12"
BLACK+DECKER Cordless String Trimmer/Edger - Adjustable Height - Automatic Feed Spool - 20 V (Battery included)


Ensure enhanced performance with a BLACK+DECKER cordless trimmer. This trimmer can convert to a wheeled edger for ease and convenience. The cordless string trimmer is ideal for residential lawns or yards of up to 1/2 acre. The 20-volt trimmer and edger comes with a 2-year limited warranty. The string trimmer weighs 5.7 lbs making it easy to wield for longer periods of time.

  • Automatic feed spool (AFS) feeds trimmer line as needed without bumping
  • LBXR2520 battery provides 66% more battery capacity for longer runtime (Compared to LBXR20)
  • 2-speed control lets you boost power or extend runtime
  • PowerDrive transmission increases torque for more cutting power at the string
  • Easily converts from trimmer to wheeled edger
  • Adjustable height and handle with premium soft grip improves comfort and control
  • Part of the 20 V MAX system - 1 system, endless tasks, power for your style

Ecological Attributes

Using an electric tool generates significantly fewer greenhouse gases (GHGs) and air pollutants than a conventional model using gasoline.

Technical specifications

Adjustable Height :Yes Base Warranty Labor(Months) :12 Base Warranty Parts(Months) :12 Battery Included :Yes Battery Recharge Time(hrs) :3.75 Battery Voltage :20-volt max Best Use :Up to 1/2 acre Brushless :No Charger Included :Yes Commercial/Residential :Residential CSA Safety Listing :Yes Cutting Swath(cm) :30.48 Cutting Swath(in) :12 Cutting Swath(mm) :304.8 Edger Capable :Yes ETL Safety Listing :No Fast Charger Included :No Line Feed :Automatic Number of Batteries Included :1 Package Contents :(1) LST522 20V MAX Cordless Trimmer/Edger, (1) LBXR2520 20V MAX Extended Runtime Lithium Battery, (1) Charger, (1) AFS Spool, (1) Guard Recommended Line Diameter(cm) :0.1651 Recommended Line Diameter(in) :0.065 Recommended Line Diameter(mm) :1.651 Series Name :N/A Shaft Length(cm) :101.0412 Shaft Length(in) :40 Shaft Length(mm) :1010.412 Shaft Type :Straight Single or Dual Line Feed :Single Sub-Brand :N/A UL Safety Listing :Yes Warranty :2-year limited Weight(kg) :2.58552 Weight(lbs.) :5.7

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we are having trouble installing the battery pak.

Asked by: Davew6
Ours went on readily, can’t think of any reason for your predicament.  If it was forced in perhaps one or more of the connector pins on either side may have been damaged. If so try to straighten them out.  Good luck 
Answered by: admo
Date published: 2021-06-03

Can I buy just a battery and charger?

Asked by: Gregggie
Can’t really answer that as they came with the trimmer, however I would consider enquiring some stores that sell and repair those machines.
Answered by: admo
Date published: 2021-05-09

Can you wind your own string on or do you have to buy a new replacement spool every time it runs out?

Asked by: hedy49
You can spool your own string if you want however the automatic string advance may not work.
Answered by: Rog4
Date published: 2022-06-16

Why won’t the trimmer cord come out automatically?

Asked by: Anonymous
I am not having this problem but could be to the cord gets tangled in the spool.
Answered by: Pepper18
Date published: 2021-04-19

Need replacement spool. What info do i need to purchase replacement spool

Asked by: Dee D
The replacement spool is Black & Decker AF-100 and contains about 30 ft of line. You can also buy off brand spools online for about 1/4 the cost or if you want to reload the original spool you can buy .065 bulk line up to 300 ft at about 1/10 the cost.
Answered by: GardenRay
Date published: 2023-06-03

How does the battery get charged ? All my other battery tools ( Dewalt and Bosch) have a separate charger. Do I need an additional charger or does the battery charge in place.I was also thinking of purchasing a lawn mower how does this charge.

Asked by: sparkman1
It comes with separate charger
Answered by: VikC
Date published: 2023-08-18

Does it work with a B&D 2.0 ah Li-ion battery

Asked by: Paolo2
As long as the 2.0ah battery is rated for 20volts and if it fits into the battery slot of the trimmer, it will work, however your run time will be shorter.
Answered by: paul62
Date published: 2020-05-17

How many batteries does it come with?

Asked by: crsjr
One 2.5Ah Li-ion battery
Answered by: donduck
Date published: 2022-06-16
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BLACK+DECKER Cordless String Trimmer/Edger - Adjustable Height - Automatic Feed Spool - 20 V (Battery included) is rated 3.8 out of 5 by 170.
Rated 5 out of 5 by from Easy to use! I bought this weed eater for the simple fact that it's shorter, lighter and easier to operate than my clunky gas powered one. The fact that it comes with two batteries is in my opinion a huge bonus. I usually charge both before I know I have to work on the yard and then I just switch them out. As a female I'm considerably shorter than most men that typically purchase and use weed eaters so I need something that's comfortable to use. I now have a gas trimmer for sale if anyone's interested!
Date published: 2019-08-23
Rated 4 out of 5 by from Light duty trimmer. This unit works great. I was looking for a light duty trimmer and this B& D does a great job. It doesn't damage my wood and metal fence. The batteries are OK but I need three to do my property.
Date published: 2017-08-05
Rated 5 out of 5 by from I'm getting old and beat up, but... ... I still have to work hard at maintaining my 5 acres. The 20V Max is light and easy on my back. It won't cut the really thick, knee-high weeds like my heavy duty gas-burner, but my expectation of a lightweight, cordless trimmer were reasonable, and I was pleasantly surprised! Its ability to cut light to medium under growth is actually quite impressive. The battery holds up better than I expected, too. Power setting #1 is typically enough. But if I do get into a little heavier stuff, #2 is a significant power boost. Probably gonna buy another one for my better half! (I hope she doesn't see this review! ;-)
Date published: 2023-08-13
Rated 2 out of 5 by from Very light, easy to use... Have used this B & D Product only once, replace previous unit, which was corded. I like the cordless feature, just seems to me it will use a lot of string. I do not have a large area, finished front of home, edging, and partially finished side of house and fence (about 50 feet and battery was done.....maybe I should return and get a unit with larger battery capability.....charging takes anywhere from two to three hours, really not acceptable. This unit would be great if you have a very, very small footprint and use a rotary push mower. Major plus is the wheel for edging around garden and house, and fence.
Date published: 2020-06-25
Rated 5 out of 5 by from Great Trimmer for Pricepoint I used a neighbor's last year and after my other one broke down I rushed out to purchase this one - love the power it has for my city property and battery life
Date published: 2018-05-27
Rated 5 out of 5 by from Ooooweeeeweeeeeeeeeeee!!!!!!! This bad boy can do some damage!!! I wasn’t expecting the power this sucker puts out! Now, this model isn’t for heavy duty jobs, but for a small yard that always needs trimming...its right on the money. I haven’t even changed out the spool of string yet!! I love this thing!!!
Date published: 2019-09-09
Rated 2 out of 5 by from Easy to use. Easy to break. Product's oretty good until it breaks. There's a little switch at the bottom of the spool cup that is made of plastic and can easily wear and break off. When that happens it doesn't prevent the line feed from coming out resulting in your whole line to come out. also it's short for a tall purson so you're bent over trying to use it. It is light & easy to use & somewhat powerful for small jobs.
Date published: 2020-06-03
Rated 1 out of 5 by from Almost Works! I have an LSTE525 which I recently reviewed and desperately want to replace, when I noticed one of the big building supply stores had carried the LSTE522. Upon researching this site, it appears there is no difference between the two trimmers - the only difference is the battery. So since they're the same trimmers, here's my take. First, I returned the first one to the store because after a couple of uses, the adjustable hand grip would "slip" to the next higher position during use. And it kept happening. Amazingly, the replacement DOES THE EXACT SAME THING! But that's not the worst of it. Last summer, the EASYFEED feature became the NOFEED feature. And pushing the button didn't work, either. So to advance the string, I have to - YES - open the spool cover and work the spool back and forth to advance the line. Isn't that convenient. I was hoping this was due to a defective spool, but the replacement spool has the same problem. Additionally, this trimmer replaced another B&D trimmer after teh batteries died - you remember the one that took NINE HOURS to charge the battery? I have other B&D tools that I really like, but after these two pieces of junk, no more B&D trimmers for me!
Date published: 2019-09-28
Rated 5 out of 5 by from Works well. I like everything about this weed eater, the price, the way it handles, and that the battery lasts my entire yard. After three uses I still haven't had to mess with the string... Which is a big bonus compared to my old one.
Date published: 2022-05-25
Rated 5 out of 5 by from I now love to trim the yard! I bought this because I was tired of lugging gas cans and extension cords! What I didn’t know about until I got it was the easy feed feature. What an absolute dream!!! I could never quite get the hang of those “bump and feed” trimmers and rewinding trimmer line ... forget it!!! I am a 70 yr old woman who still does my own lawn and this trimmer is a Godsend! It is lightweight and fun to use. I highly recommend it!! Do yourself a favor and buy an extra battery though.
Date published: 2019-08-24
Rated 5 out of 5 by from This Five Stars for Me This is my second one of the same model with the first one lasting just under 17 years. I was convinced once this one went I would replace it with a gas powered Model but there is just no justification for it this one does the job and does it well. I'm certain there are people out there with larger property then me but I have one acre fenced in with a lot of hedges, trees, deck and pool in other words I cannot complete any landscaping without having to do a lot of weed trimming and edging to complete the job and this has never failed me. So I have to change the battery half way through not really a big deal I have 4 one is always charged. Its worth every penny and extremely affordable.
Date published: 2020-09-07
Rated 3 out of 5 by from Good product, battery life short I have had this product for several years and it gets the job done with enough power. The battery life only lasts 10 minutes (on high power) and 30 minutes on low power. What this product needs (and others like it) is an accessory that would allow it to be plugged in so it can work via extension cord as well so work can continue when the battery runs out. I would recommend this product IF that accessory existed.
Date published: 2019-06-09
Rated 5 out of 5 by from Perfect for the suburbs I love the battery feature; plenty of power for trimming around the backyard fence. I was surprised how well it edges along the sidewalk and driveway as well. The 0.065" line breaks often along the drive, but gets the job done. For the cost, worth every penny.
Date published: 2018-05-16
Rated 1 out of 5 by from Major issue Just bought one to replace a 2+ year old model that ran flawlessly until a few weeks ago when it would run and then stop running. Replacing the battery and charger made no difference. It would run sporadically, which was maddening. I bought a new one and ran it until the battery was used up (about 15 minutes), put a fresh battery in and it wouldn't run. Exact same issue as I had with my 2+ year old model. Waited about 6 hours for the original battery to recharge and it still would not run when I replaced the battery. The next afternoon while I was boxing it up to return it, I pushed the trigger and it ran! I returned it as clearly there is a major issue. My guess is they have faulty switches in this model. A relatively simple fix yet they do not make the part available to purchase.
Date published: 2022-09-02
Rated 1 out of 5 by from Don’t buy it I bought this trimmer a year ago end of summer 2017. The design of the product is unique and trendy but has a terrible battery life!! you barely get 5-10 minutes of use before it’s out of battery. Also, it takes 10-12 hours to recharge battery. It’s absolutely a waste of time and money. Do not buy it.
Date published: 2018-06-08
Rated 5 out of 5 by from Easy to use I have never before owned a trimmer. What I love about this one is how easy it is to use - just charge up the battery (which thankfully can be left plugged in 24X7, without adverse impact on battery life), and then attach it to the trimmer when ready to use. The trimmer is powerful, and the ability to adjust it's height, as well as the ability to easily switch it to edging mode are both appreciated by me. Best of all, the string automatically gets discharged as needed. I was also impressed by the safety features, as well detailed instructions. All in all, taking out the weeds in the backyard is now a chore I look forward to. Thanks for making a high quality and attractive product. I hope and expect to get several years of good usage out of it.
Date published: 2020-05-04
Rated 1 out of 5 by from Poor Battery Run Time I just bought this trimmer and used it only 2 times. Battery only lasted about 15 minutes. First time I thought maybe I just didn't have it charged up enough. Second time after it was fully charged, same result. Do not buy this product if you need to run it more than 15 minutes. Or else you will need several batteries.
Date published: 2018-06-09
Rated 5 out of 5 by from Perfect Love my new trimmer. Before i had the electric one. It have power and long battery life. No need to worry about the gas or chord. Light weight and easy to handle.
Date published: 2017-08-19
Rated 5 out of 5 by from Nice Tool I bought this item yesterday and used it today and I loved it. I have an average size yard and it is perfect for what I need. Not designed for heavy cutting but for the average home owner it is more than enough. Very lightweight, easy to use. Love the fact no mixing gas and oil or having cords stretched across the yard. Just grab it and go. Highly recommend this product for anyone who has just an average size yard
Date published: 2018-10-04
Rated 5 out of 5 by from Great Value, Good Performance Tool I used it for over a month now and the tool performed great. I only use the high power setting and the battery will last ~ 20 minutes sufficient for my needs.
Date published: 2017-09-24
Rated 4 out of 5 by from Great gift I received the trimmer from my son and daughter in law as a surprise gift after telling them about the blisters I get on my hands using my hand clippers. I am a housewife 75 years old and never used a trimmer before the end of August 2019. I am not perfect at using it yet but thus far, it works great. My next challenge will be reading about and mastering edging along my street curbs using the wheeled edge guard.
Date published: 2019-10-03
Rated 1 out of 5 by from Awful—waste of money Literally used it once last year and once this year. The battery dies so fast and after using it for the second time the spool and line part is gone. It is not even available to order.
Date published: 2020-06-04
Rated 4 out of 5 by from Figured out how to get auto-feed to work After working on this for a few hours I finally discovered how to get mine to feed. The trick was to first pull the trigger all the way and get the head spinning freely full-speed then quickly put it in heavy grass or weeds so that it slows down considerably and then just as quickly pull it away so it speeds back up. Keep the trigger pulled all the way the entire time.
Date published: 2020-06-21
Rated 5 out of 5 by from Light weight and easy to use At 84 years young I started having balance problems which made my Black and Decker corded weed eater difficult for me to use. My wife used it, but complained about the cord and the weight. I bought this lithium battery powered weed eater and we both love it. The charge on the battery lasts plenty long for our needs and the weight is perfect for both of us.
Date published: 2019-10-21
Rated 2 out of 5 by from Poorly made Have had to replace every year. Very poorly made. We have small property and this one has not even lasted a season before squealing, the lock to hold extended rod does not hold so it shrinks while using, battery dosen't last long enough to weed eat even small property ...I have B&D hedgr cutters that have lasted years..but this..not worth the money.
Date published: 2021-08-30
Rated 2 out of 5 by from Easy to handle BUT POOR BATTERY LIFE I purchased mine a couple of weeks ago and thought that when I first used it that I simply didn’t charge the battery long enough but then the second go round, I charged it fully and the battery still only lasted me about 15ish minutes. I’m not happy at all as it certainly makes yardwork much more laborious than it already is.
Date published: 2020-07-11
Rated 3 out of 5 by from Not so great. I bought this about a month ago and it's just okay. The string is supposed to come out on it's own but it didn't. It had to be pulled out manually. I contacted customer service and they were amazing. They replaced it immediately. However, the new one does the same thing. It still doesn't work right. Also, the batteries have a very short life. There are a few good things about it. It is light weight and easy to use. It works well before the battery dies and you have to stop and manually pull out the trimmer string.
Date published: 2019-08-26
Rated 2 out of 5 by from switch problem on both of my trimmers I bought black and decker trimmer in 2018, another one in 2019, and on both trimmer the switch control will not work. I am 78 yrs old and like the light weight feature but very unsatisfied with the switch control on both trimmers..I will not buy another black and decker battery operated trimmer
Date published: 2020-05-25
Rated 5 out of 5 by from Light weight, perfect for women This is perfect for a small yard. It's so light. Yes I said perfect for women but I also have hip issues and can't hold something heavy. It was a great price I bought it last season and still works great. Bought the cordless leaf blower this year hope that works just as well
Date published: 2019-06-07
Rated 5 out of 5 by from Good value for the money This trimmer is perfect for my 1/3 acre and it does the job nicely. It's more reliable than my hard to start bigger gas trimmers. It will run about 15-20 minutes on a charge and can be recharged relatively quickly should you need to continue. Satisfied with the puchase.
Date published: 2019-09-10
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