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Greenworks 40V 12" String Trimmer vs Greenworks 24V 12" String Trimmer/Edger

Two of the cordless string trimmers in our best cordless string trimmers: greenworks & ryobi compared comparison, lined up spec by spec. Every figure comes from the manufacturer pages linked below, and the scores use the same published formula as the full ranking.

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#13 of 14 in Cordless String Trimmers

Greenworks 40V 12" String Trimmer

2.0/10

Best for: 12 in 40V trimmer with 33 min runtime

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#14 of 14 in Cordless String Trimmers

Greenworks 24V 12" String Trimmer/Edger

1.7/10

Best for: Lightest-duty option for small yards

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Spec-by-spec comparison

Green marks the better published figure. "Not listed" means the manufacturer doesn't publish it.

SpecGreenworks 40V 12" String TrimmerGreenworks 24V 12" String Trimmer/EdgerWeight
Cutting swathThe widest cutting path the maker lists (the number in most product names). Where the swath is adjustable, we rank the widest setting. 12 in 12 in 25%
RuntimeThe maker's longest runtime claim with the kit battery, usually at low speed. 33 min 20 min 25%
Kit battery energyBattery energy in watt-hours, computed as volts x amp-hours of the battery or batteries the maker says come in the kit (for example 40 V x 6 Ah x 2 = 480 Wh). Bigger batteries generally mean more work per charge from the same tool. 80 Wh 48 Wh 20%
Listed weightThe weight the maker lists. Lighter trimmers tire your arms less. Makers don't always say whether it includes the battery. 7.3 lb 5.2 lb 20%
Brushless motorYes when the maker lists a brushless motor, which generally runs cooler and longer per charge than a brushed one. No No 10%
Kit battery40 V 2 Ah = 80 Wh (computed)24 V 2 Ah = 48 Wh (computed)info
Line diameterNot listed0.065 ininfo
YardPick score2.0/101.7/10100%

Where each one comes out ahead

Greenworks 40V 12" String Trimmer

Better published figure on: Runtime, Kit battery energy.

What we like

    Watch out for

    • Lowest cutting swath in this comparison (12 in)

    Greenworks 24V 12" String Trimmer/Edger

    Better published figure on: Listed weight.

    What we like

    • Lowest listed weight in this comparison (5.2 lb)

    Watch out for

    • Lowest cutting swath in this comparison (12 in)
    • Lowest runtime in this comparison (20 min)
    • Lowest kit battery energy in this comparison (48 Wh)

    Verdict

    Both cut 12 in. The 40V kit lists 80 vs 48 Wh and 33 vs 20 min; the 24V model lists 5.2 vs 7.3 lb.

    Greenworks 40V 12" String Trimmer on AmazonGreenworks 24V 12" String Trimmer/Edger on Amazon
    Spec sources

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