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Greenworks 40V 15" Gen 2 String Trimmer

Ranked #12 of 14 in Best Cordless String Trimmers: Greenworks & Ryobi Compared (2026). Here is every spec we scored, where it came from, and how it compares.

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#12

Greenworks 40V 15" Gen 2 String Trimmer

Best for: 13/15 in swath on the 40V platform

3.4/10

What we like

    Watch out for

      Score breakdown

      Cutting swath 25%
      Runtime 25%
      Kit battery energy 20%
      Listed weight 20%
      Brushless motor 10%
      Cutting swath15 in
      Runtime30 min
      Kit battery energy80 Wh
      Listed weight7.3 lb
      Brushless motorNo
      Kit battery40 V 2 Ah = 80 Wh (computed)
      Cutting path13 in / 15 in
      Line diameter0.080 in
      PriceCheck price
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      Specs source:

      How it compares

      Open the full comparison table

      Greenworks 40V 17" String Trimmer, 8.0 Ah Kit
      8.3/10
      #1 · Longest runtime here: 80 min on an 8 Ah battery
      Ryobi 40V HP Brushless 17" String Trimmer Kit
      6.9/10
      #2 · Adjustable 15–17 in swath and a 6 Ah battery
      Greenworks 80V 16" Brushless String Trimmer
      6.8/10
      #3 · 65 min runtime from a 2 Ah 80V battery
      Greenworks 80V 16" Brushless Carbon Fiber String Trimmer
      6.7/10
      #4 · Carbon fiber shaft at 7.7 lb
      Greenworks 60V 17" Brushless String Trimmer
      6.6/10
      #5 · 17 in brushless at 7.3 lb
      Greenworks 24V 15" Brushless String Trimmer, 6.0 Ah Kit
      6.4/10
      #6 · Light 15 in brushless at 6.06 lb with 60 min runtime
      Greenworks 80V 17" Brushless String Trimmer
      5.8/10
      #7 · 17 in 80V brushless trimmer
      Greenworks 60V 16" Gen 2 Brushless String Trimmer
      5.1/10
      #8 · 60V brushless with 53 min runtime
      Greenworks 24V 13" Brushless String Trimmer/Edger
      4.8/10
      #9 · 13 in trimmer/edger at 5.51 lb
      Ryobi 18V ONE+ HP Brushless 15" String Trimmer Kit
      3.7/10
      #10 · 18V ONE+ brushless with a 13–15 in swath
      Ryobi 18V ONE+ 13" String Trimmer/Edger Kit
      3.5/10
      #11 · Budget 18V trimmer/edger, 55 min runtime
      Greenworks 40V 12" String Trimmer
      2.0/10
      #13 · 12 in 40V trimmer with 33 min runtime
      Greenworks 24V 12" String Trimmer/Edger
      1.7/10
      #14 · Lightest-duty option for small yards