Model#: BDKNLST522

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Black & Decker LST522 20V MAX 2.5 Ah Cordless Lithium-Ion 12 in. 2-Speed String Trimmer/Edger Kit

  • Black & Decker LST522 20V MAX 2.5 Ah Cordless Lithium-Ion 12 in. 2-Speed String Trimmer/Edger Kit
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  • Due to federal regulations, this product can only be shipped within the continental US. Express delivery not available.


Get the power you need with this Black & Decker 20V MAX 2.5 Ah Cordless Lithium-Ion 12 in. 2-Speed String Trimmer/Edger Kit with extended battery capacity. Power through tough overgrowth, or reduce speed while you edge for extra runtime. Either way, there's no bumping required thanks to the Automatic Feed Spool.
  • Automatic Feed Spool (AFS) feeds trimmer line as needed without bumping
  • Extended battery runtime provides 66% more battery capacity
  • 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
  • 20V MAX Cordless Lithium-Ion 12 in. 2-Speed String Trimmer/Edger - LST522
  • 20V MAX 2.5 Ah Extended Runtime Lithium-Ion Battery - LBXR2520
  • 20V MAX Lithium-Ion Battery Charger
  • AFS Spool
  • Guard


Series: 20V MAX
Cordless: Yes
Batteries Included: 1
Battery Amp Hours: 2.5 Ah
Battery Type: Li-Ion
Cutting Width: 12 in.
Drive Shaft Type: Straight
Line Diameter: 0.065 in.
No-Load Speed (RPM): 5,500 / 7,200
Speed Settings: 2
Voltage: 20V



4.3 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Good purchase
This is a relatively light weight trimmer, so it's easy to handle and maneuver. The battery is small, light, and simple to detact (unlike the monster I had been using previously - another brand). The wheel guide is a nice touch for the edging feature. It keeps the edges even, and reduces the stress on my arms. I had hoped that the telescoping bar would make it long enough for me to use without having to stoop too much but it doesn't (at 6ft, most handles are too short for me). But if you are average-to-shorter, I suppose the adjustability will be a nice feature for you. It trims well, edges the sidewalk easily, does what it's supposed to do. If you're looking for a new edger, lose the power cord and get this one.
May 27, 2016
Originally posted at
Good lightweight trimmer
I use many Milwaukee Commercial 18V tools and the only issue I have with this B & D home grade model is that the batteries don't have a larger capacity, or in other words, they are not built larger with more charge storage capacity. Other than that I do like this new model string trimmer
August 23, 2016
Originally posted at
Top Of the Line
I upgraded my B&D 18v trimmer after years of hard work when the battery wore out. Coming back to B&D for a new one was a no brainer. The features on the 20v Lithium are well thought up. 2-speeds to conserve battery runtime thru the easy stuff & high power for the thick tough stuff, an adjustable wand with a comfortable grip and an easy push button to flip the head. I've been using this over a year and theirs nothing more I would ask for to make this better. Even the price was less than others I tried to compare. If you're on the fence, I say buy it, around the house you don't need anything bigger.
June 1, 2016
Originally posted at

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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).