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40V vs 80V Hedge Trimmer: Which One Should You Buy?

A 40V pole saw and hedge trimmer combo, a 40V cordless hedge trimmer and an 80V pole hedge trimmer compared on voltage, blade length, reach, runtime and weight, with a verdict on which side fits which yard.

AcreMowerLab Editorial
By AcreMowerLab Editorial · 4 min read
40V vs 80V Hedge Trimmer: Which One Should You Buy?
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Top picks at a glance

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  1. 1Worx 40V 15 Inch Cordless String TrimmerWorx 40V 15 Inch Cordless String Trimmer9.7/10View on Amazon
  2. 2Greenworks 80V 26 in Cordless Hedge TrimmerGreenworks 80V 26 in Cordless Hedge Trimmer9.5/10View on Amazon
  3. 3Greenworks 80V 20 in Cordless Pole Hedge TrimmerGreenworks 80V 20 in Cordless Pole Hedge Trimmer9.4/10View on Amazon
  4. 4EGO HTA2020 20-Inch Carbon Fiber Hedge Trimmer Attachment forEGO HTA2020 20-Inch Carbon Fiber Hedge Trimmer Attachment forView on Amazon
  5. 5BLACK+DECKER Electric Hedge TrimmerBLACK+DECKER Electric Hedge TrimmerView on Amazon
  6. 6Dewalt Trimmer Hedge Bare 20V DCHT820BDewalt Trimmer Hedge Bare 20V DCHT820BView on Amazon
  7. 7Supstable Cordless Pole Saw & Hedge Trimmer 6-in-1Supstable Cordless Pole Saw & Hedge Trimmer 6-in-1View on Amazon
  8. 8BLACK+DECKER 22" Electric Hedge TrimmerBLACK+DECKER 22" Electric Hedge TrimmerView on Amazon
  9. 9SUNSEEKER 16" Hedge Trimmer Attachment UniversalSUNSEEKER 16" Hedge Trimmer Attachment UniversalView on Amazon

Verdict: Choose the 40V side if you want the lighter stated weights, a stated runtime and a combo kit that also cuts branches. Choose the 80V side for tall hedges and a brushless pole trimmer, accepting a listing with no stated runtime or warranty.

Tall hedges along a boundary, shrubs shading a path and branches overhanging a fence all need a tool that reaches the growth and cuts it cleanly. This guide compares the 40v vs 80v hedge trimmer choice through three listings: a 40V combo kit, a 40V handheld trimmer and an 80V pole trimmer.

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#ProductAcre ScoreBuy
1Seesii 40V 2-in-1 Pole Saw and Hedge Trimmer ComboSeesii 40V 2-in-1 Pole Saw and Hedge Trimmer Combo9.6/10Buy on Amazon
2Greenworks 40V 24 in Cordless Hedge TrimmerGreenworks 40V 24 in Cordless Hedge Trimmer9.5/10Buy on Amazon
3Greenworks 80V 20 in Cordless Pole Hedge TrimmerGreenworks 80V 20 in Cordless Pole Hedge Trimmer9.4/10Buy on Amazon
Seesii 40V 2-in-1 Pole Saw and Hedge Trimmer Combo

Seesii 40V 2-in-1 Pole Saw and Hedge Trimmer Combo

Seesii9.6/10 Acre Score
i
The Acre Score (out of 100, shown as /10) weighs rated performance, build, value, safety listing and warranty. How we score

A 40V 2-in-1 kit that switches between a pole saw head and an 18 in dual-action hedge trimmer head, with a 4.0Ah battery, charger and shoulder strap in the box.

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Read the full review

The Seesii kit pairs a 10 in pole saw head with an 18 in dual-action hedge trimmer head on a 3-section pole that sets up at 6.5 ft or 8.5 ft. The 800W motor runs up to 5023 RPM in pole saw mode and up to 2800 SPM in trimmer mode, and the included 40V 4.0Ah battery states up to approximately 60 minutes for the saw and up to approximately 100 minutes for the trimmer. The bullets give weights of approximately 9.2 lb for the saw and 9.5 lb for the trimmer, while the spec table lists 9.8 pounds.

Pros

  • Two heads in one 40V kit
  • 4.0Ah battery with charger included
  • Adjustable pole from 6.5 ft to 8.5 ft
  • Shoulder strap helps distribute the load

Cons

  • No warranty term is stated
  • Spec table weight of 9.8 pounds differs from the bullet weights
  • Pole saw and trimmer runtimes differ
  • Two heads mean swapping heads between saw and trimmer work
Greenworks 40V 24 in Cordless Hedge Trimmer

Greenworks 40V 24 in Cordless Hedge Trimmer

Greenworks9.5/10 Acre Score
i
The Acre Score (out of 100, shown as /10) weighs rated performance, build, value, safety listing and warranty. How we score

A 40V cordless hedge trimmer with 24 in steel blades, a 1 in cut capacity, a 2.0Ah battery and charger, and a rotating rear handle.

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The Greenworks 40V example is a handheld cordless hedge trimmer with 24 in steel blades and a 1 in cut capacity, powered by a 2.0Ah battery with a charger included. The listing states up to 60 minutes of runtime, a rotating rear handle for vertical cutting, a 3 sided wrap around auxiliary handle and a cushioned overmold grip. Weight is 9.89 Pounds and the listing states a 2 Year warranty.

Pros

  • 24 in steel blades for long hedge lines
  • 1 in cut capacity stated
  • Rotating rear handle for vertical cuts
  • 2 Year warranty stated

Cons

  • 2.0Ah battery is smaller than the 4.0Ah battery in the Seesii kit
  • No pole for tall hedges is stated
  • Runtime of up to 60 minutes
  • Brushless motor is not stated
Greenworks 80V 20 in Cordless Pole Hedge Trimmer

Greenworks 80V 20 in Cordless Pole Hedge Trimmer

Greenworks9.4/10 Acre Score
i
The Acre Score (out of 100, shown as /10) weighs rated performance, build, value, safety listing and warranty. How we score

An 80V cordless pole hedge trimmer with a brushless motor, a 2.0Ah battery and 2A charger, built to trim tall hedges with less ladder use.

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Read the full review

The Greenworks 80V example is a 20 in pole hedge trimmer with an 80V brushless motor, a 2.0Ah battery and a 2A charger included. The listing describes extended reach for tall hedges and hard-to-reach growth with less ladder use, and balanced handling. Weight is 13.8 pounds. No runtime, cut capacity or warranty term is stated.

Pros

  • 80V brushless motor
  • Pole design for tall hedges with less ladder use
  • Battery and charger included
  • Cordless design with no gas, oil or pull-starts

Cons

  • No runtime is stated
  • No warranty term is stated
  • No cut capacity is stated
  • At 13.8 pounds it is heavier than the stated weights of either 40V example

Other machines to compare

40v vs 80v hedge trimmer side by side

Factor Seesii 40V Combo Greenworks 40V 24 in Greenworks 80V 20 in
Voltage 40V 40V 80V
Type 2-in-1 pole saw and hedge trimmer Cordless hedge trimmer Cordless pole hedge trimmer
Blade 18 in dual-action 24 in steel 20 in pole
Cut capacity 10 in branches (pole saw) 1 in Not stated
Battery 40V 4.0Ah, included 40V 2.0Ah, included 80V 2.0Ah, included
Runtime Up to approximately 60 minutes (saw); up to approximately 100 minutes (trimmer) Up to 60 Minutes Not stated
Weight 9.2 lb saw, 9.5 lb trimmer 9.89 Pounds 13.8 pounds
Reach 6.5 ft or 8.5 ft tool length Not stated Pole, for tall hedges
Warranty Not stated 2 Year Not stated

Figures are manufacturer stated for the three example models, collected 30 October 2026.

Voltage: what the number changes

Voltage marks the battery platform. The 40V examples run on 40V batteries, one 4.0Ah and one 2.0Ah, while the 80V example runs on an 80V 2.0Ah battery. The listings do not state a shared power figure that would let a reader rank the platforms directly: the Seesii listing states an 800W motor, the Greenworks 80V listing states a brushless motor, and the Greenworks 40V listing states neither watts nor a brushless motor.

Blade length and cut capacity

Blade length differs across the three. The Greenworks 40V example has 24 in steel blades, the Seesii trimmer head has an 18 in dual-action blade, and the Greenworks 80V example is a 20 in pole trimmer. Only the Greenworks 40V listing states a trimmer cut capacity, 1 in. The Seesii 10 in figure describes its pole saw head cutting branches, not its trimmer blade, and the Greenworks 80V listing states no cut capacity. The three blade lengths are 24 in, 18 in and 20 in.

Reach: pole or handheld

Reach separates the three most clearly. The Seesii pole adjusts from 6.5 ft to 8.5 ft, and for a 6 ft adult the 8.5 ft setup gives up to approximately 14.5 ft of combined user-and-tool height. The Greenworks 80V pole trimmer is built for tall hedges with less ladder use. The Greenworks 40V example is a handheld trimmer with no pole stated, so its listing covers no pole reach for tall growth.

Runtime and batteries

Runtime is stated on the 40V side only. The Seesii kit states up to approximately 60 minutes for the pole saw and up to approximately 100 minutes for the trimmer on its 4.0Ah battery, and the Greenworks 40V example states up to 60 minutes on its 2.0Ah battery. The Greenworks 80V listing states no runtime, so its working time between charges is unclear from the listing.

Weight and handling

Weight is stated on both sides, but not on the same basis: the Seesii figures are stated per head in use, while the Greenworks figures are the listed item weights, so the comparison is approximate. The Seesii heads weigh approximately 9.2 lb and 9.5 lb, the Greenworks 40V example weighs 9.89 Pounds, and the Greenworks 80V example weighs 13.8 pounds. The Seesii kit includes a shoulder strap and the Greenworks 40V example has a rotating rear handle.

The three examples

Acreage and terrain fit

Seesii 40V Combo

Acreage fitUnder 11-22-55-1010+
Terrain fitFlatTrees and beds

Greenworks 40V 24 in

Acreage fitUnder 11-22-55-1010+
Terrain fitFlatTrees and beds

Greenworks 80V 20 in

Acreage fitUnder 11-22-55-1010+
Terrain fitFlatTrees and beds

Matching It to Your Property

  • Flat ground with hedges within handheld reach: the handheld 40V example covers long lines with 24 in blades.
  • Tall boundary hedges: the Seesii adjustable pole, described for work with feet on the ground, or the Greenworks 80V pole trimmer, noted for less ladder use.
  • A mixed yard with branches and hedges: the Seesii combo switches between saw and trimmer heads in one kit.
  • Storage in a shed: battery kits with included chargers keep the kit in one place, with no fuel to store.

The Acre Score explained

The Acre Score weighs five factors: performance (voltage, motor and what it can cut), build quality (blades, handles and pole), value (battery, charger and kit contents), safety (controls the listing states) and warranty (term and coverage). A factor the listing does not state scores zero.

Product Acre Score Perf. /35 Build /25 Value /25 Safety /10 Warranty /5
Seesii 40V Combo 9.6 30 21 22 4 0
Greenworks 40V 24 in 9.5 27 20 20 0 3
Greenworks 80V 20 in 9.4 28 19 18 0 0

Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.

Trimmer and blower safety

Wear eye and hearing protection, long pants and sturdy footwear, and keep bystanders well back while the line or blade spins. Clear stones and debris first, and stop the engine or remove the battery before clearing the head. Refuel only with the engine off and cool. See OSHA landscaping safety. Read our Safety Disclaimer.

FAQ: mowing large lots

Does a higher voltage mean a longer blade?

No. The 80V example is a 20 in pole trimmer, while the 40V Greenworks example has 24 in blades. Voltage and blade length are separate specs, so compare them separately.

Can the 40V combo replace a separate pole saw?

For the jobs its listing describes, yes in part: the Seesii kit switches between a pole saw head rated for branches up to 10 in under suitable cutting conditions and an 18 in trimmer head. It is one kit, not two separate tools.

Which examples state a runtime?

The Seesii kit and the Greenworks 40V example state runtimes. The Greenworks 80V listing states no runtime.

Do these trimmers need a ladder for tall hedges?

The Seesii pole and the Greenworks 80V pole trimmer are built for tall hedges, the 80V listing noting less ladder use. The handheld Greenworks 40V example states no pole.

What warranty does each example carry?

The Greenworks 40V listing states a 2 Year warranty. The Seesii and Greenworks 80V listings state no warranty term.

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