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Which battery system and trimming workflow fits your yard?

Both exact kits list one 2.0 Ah battery and a charger. The deciding questions are which battery ecosystem you want and whether explicit wheeled-edger conversion matters: BLACK+DECKER describes it for the LST300, while Greenworks documents dual-line auto feed, a variable-speed trigger and a flower-bed edge guide for 2101602.

Published by Pickoryx · Published 2026-10-17

Source checked 2026-10-17 20:13 UTC

Products compared

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The buying question

Should you choose the LST300 or Greenworks 2101602 based on your existing battery platform and the way you trim or edge?

Both manufacturer pages list a 2.0 Ah battery and charger. The LST300 is part of BLACK+DECKER 20V MAX POWERCONNECT and explicitly converts between trimmer and wheeled edger; Greenworks 2101602 is a 40V-platform trimmer with dual-line auto feed and a variable-speed trigger, while its manual describes an edge guide for flower beds.

Quick verdict

When the recommendation changes
  • If you already own a battery, check the manufacturer’s compatibility information for that exact pack and tool before choosing; these sources identify the two tool platforms but do not establish cross-brand compatibility.
  • If wheeled-edger conversion is essential, confirm the exact offered unit includes the LST300 feature; the Greenworks manual’s edge guide is a different documented feature.
  • The compared pages do not establish which tool cuts faster, trims more area per charge, feeds line more reliably or is easier to handle.

The differences that matter

Battery Platform And Included Kit

BLACK+DECKER LST300 20V MAX String Trimmer/Edger

The LST300 page identifies the 20V MAX POWERCONNECT system and lists one 2.0 Ah battery and charger with the trimmer.[1]

Greenworks 2101602 40V 12-inch String Trimmer

Greenworks identifies model 2101602 as a 40V tool, says the platform powers 75+ Greenworks 40V tools, and lists one 2.0 Ah battery and charger with this trimmer.[2]

What this changes: Both listed kits include a 2.0 Ah battery and charger, so the practical distinction is the ecosystem you already use: match existing packs only to their stated platform. The nominal voltage labels do not establish comparative cutting power or runtime.[1, 2]

The better fit depends on your priorities

Documented Line And Edge Workflow

BLACK+DECKER LST300 20V MAX String Trimmer/Edger

BLACK+DECKER describes an AFS automatic feed spool that advances line without bumping and says the LST300 converts from trimmer to a wheeled edger.[1]

Greenworks 2101602 40V 12-inch String Trimmer

Greenworks lists a 0.065-inch dual-line auto-feed head and variable-speed trigger. Its 2101602 manual describes an edge guide for trimming around a flower bed and says to release the trigger for two seconds, then squeeze it again to advance line.[2, 3]

What this changes: Choose based on the operation you specifically want documented: the LST300 page explicitly describes wheeled-edger conversion; Greenworks documents variable-trigger control, dual line and a flower-bed edge guide. The guide is not evidence that 2101602 converts to a wheeled edger, and these specifications do not compare cut quality or feed reliability.[1, 2, 3]

The better fit depends on your priorities

Best for your routine

A manufacturer-described conversion to a wheeled edger is a priority

Best fit: BLACK+DECKER LST300 20V MAX String Trimmer/Edger

Based on listed features, not comparative testing.

BLACK+DECKER explicitly says LST300 converts between trimmer and wheeled edger; Greenworks 2101602 documentation here instead identifies a flower-bed edge guide. That does not establish that Greenworks cannot edge.

View BLACK+DECKER LST300 20V MAX String Trimmer/Edger on AmazonPaid link

Choosing a trimmer kit to add to a Greenworks 40V tool lineup

Best fit: Greenworks 2101602 40V 12-inch String Trimmer

Based on listed features, not comparative testing.

Greenworks says the 40V platform powers 75+ tools and this exact 2101602 offer includes a 2.0 Ah battery and charger. Confirm any existing pack’s exact compatibility.

View Greenworks 2101602 40V 12-inch String Trimmer on AmazonPaid link

Value and trade-offs

One or both observed offers have eligibility conditions, so no unrestricted price difference is shown.

Compare current offers against the battery ecosystem and documented operating features that matter to you; no performance advantage is established by these sources.

Insufficient price history is available to make a buy-now or wait recommendation; compare current offers and the documented features you need.

Limitations

  • This is a comparison of manufacturer-listed identity, kit contents and operating features, not a controlled cutting or runtime test.
  • The two 2.0 Ah battery labels are not a common-condition runtime measure. The 20V MAX and 40V platform labels do not show which trimmer cuts more effectively.
  • BLACK+DECKER explicitly describes wheeled-edger conversion for LST300. Greenworks describes an edge guide for flower beds in the 2101602 manual; the documents used here do not establish whether the Greenworks unit has a wheeled-edger conversion.
  • No owner-use, line-breakage, durability, noise, comfort or cutting-quality comparison was established.

Questions shoppers ask

Do both exact kits include a battery and charger?

Yes. The BLACK+DECKER LST300 page lists one 2.0 Ah battery and a charger; Greenworks lists one 40V 2.0 Ah battery and charger for model 2101602. Confirm the contents of the exact offer before buying.

Can either be used as an edger?

BLACK+DECKER says the LST300 converts from trimmer to wheeled edger. The Greenworks 2101602 manual describes an edge guide for trimming around flower beds. These are different documented workflows; the sources here do not say that Greenworks converts to a wheeled edger or that it cannot edge.

Are the batteries interchangeable?

The sources identify separate BLACK+DECKER 20V MAX POWERCONNECT and Greenworks 40V platforms; they do not support cross-brand compatibility. Choose an existing-battery platform only after checking that the exact pack is specified for that tool.

Methodology and sources

Compared the manufacturers’ named battery platforms and exact listed kit contents, plus their documented line-feed and edge workflows. No side-by-side cutting or runtime test was conducted.

AI-assisted research and drafting organized manufacturer specifications and instructions into conditional buying guidance. Pickoryx did not conduct hands-on testing of these trimmers.

View 3 sources
  1. 1.20V MAX POWERCONNECT Cordless 2-in-1 String Trimmer & Edger, Battery & Charger IncludedBLACK+DECKER · Official specifications · Source checked 2026-10-17 20:13 UTC
    Evidence used on this page
    • Product identity (lines 33–39); Details & Features (110–124); battery and charger specifications (129–151); includes list (200–203); product description of wheeled-edger conversion (234–237); POWERCONNECT platform (251–255).: Exact page names model LST300 and identifies the 20V MAX POWERCONNECT family, AFS automatic spool, wheeled-edger conversion, one 2.0 Ah battery and charger.
  2. 2.40V 12-inch String Trimmer & 2.0 Ah BatteryGreenworks · Official specifications · Source checked 2026-10-17 20:13 UTC
    Evidence used on this page
    • Model/SKU 2101602 (lines 304–306); key features (170–187); 40V product specification (194–201); platform and included items (231–263).: Exact manufacturer page names SKU/model 2101602, lists the 40V platform, 12-inch dual-line auto-feed head, variable-speed trigger, a 2.0 Ah battery and charger, and states the platform powers 75+ Greenworks 40V tools.
  3. 3.40V Lithium-Ion String Trimmer Owner’s Manual, model 2101602Greenworks · Official specifications · Source checked 2026-10-17 20:13 UTC
    Evidence used on this page
    • Owner’s Manual: KNOW YOUR String Trimmer / edge guide (PDF p. 9, zero-based viewer page P8); Packing List naming model 2101602 (PDF p. 10, viewer page P9); ADVANCING LINE (PDF p. 19, viewer page P18).: The manual packing list identifies 2101602; it describes the edge guide for trimming around flower beds and gives a trigger-release/retrigger auto-feed procedure. It does not establish wheeled-edger conversion.

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