String trimmers are the single most-used outdoor tool in most yards after the lawn mower. Edging the driveway, cleaning up around fence posts, cutting the tall grass the mower missed, trimming along garden beds — a good string trimmer runs weekly for months on end. Which means the tradeoffs between gas and electric add up fast.
Modern 80V cordless string trimmers deliver cutting power comparable to typical residential gas trimmers, with none of the fuel mixing, cold-weather starting, or maintenance headaches. But the answer still isn't "electric wins everywhere." This guide walks through the real tradeoffs of gas vs electric string trimmers in 2026 and which one fits typical Canadian homeowner use.
The Fundamental Comparison
- Gas string trimmers burn a 2-cycle fuel mix. Higher sustained power, unlimited runtime with fuel, but heavy, loud, and require annual maintenance.
- Electric (battery) string trimmers use lithium-ion batteries. No fuel, no oil, minimal maintenance, quieter operation — but constrained by battery capacity per session.
Modern high-voltage cordless trimmers (60V, 80V) have closed the power gap. What remains is a tradeoff between runtime (gas wins) and everything else (electric wins).
Cutting Performance
| Typical Residential Gas Trimmer | Greenworks 80V 16" Trimmer | |
|---|---|---|
| Engine/motor | 25–30cc gas 2-cycle | 80V brushless (27cc-equivalent) |
| Cutting swath | 15"–17" | 16" |
| Line diameter capacity | 0.080"–0.095" | 0.080" |
| Cutting through thick grass | Excellent | Excellent — matches gas |
| Cutting through weeds and stalks | Excellent | Excellent |
| Sustained cutting power | Unlimited (with fuel) | Limited by battery |
For residential string trimming — regular edging, weed cutting, cleanup around obstacles — 80V cordless matches typical 25–30cc gas trimmers in real cutting performance. The old "electric is underpowered" complaint applied to 20V–40V cordless trimmers. 80V closed that gap.
Where gas retains an edge: cutting brush and small saplings with brush cutter attachments, and multi-hour continuous cutting.
Runtime — The Structural Difference
| Job | Gas Trimmer | 80V Single Battery (2.0Ah) | 80V Larger Battery (4.0Ah) |
|---|---|---|---|
| Weekly quick edging | Fine | Fine | Overkill |
| Full-yard trimming session | Fine | Fine for small yard | Fine for medium yard |
| Half-acre property trim-up | Fine | May need swap | Fine (single charge) |
| Continuous acre+ trimming | Preferred | Impractical | Multiple swaps needed |
| Commercial daily trimming | Preferred | Impractical | Impractical |
For most Canadian residential yards, 80V cordless with a 4.0Ah battery handles a full-yard trimming session without a battery swap. Small yards can use 2.0Ah batteries; larger properties benefit from spare batteries cycling on the charger.
Weight and Ergonomics — Where Electric Wins
This is where the day-to-day experience differs meaningfully:
- Gas string trimmer: Typically 12–17 lbs. Engine mounted at the top or rear of the shaft. Weight distribution creates arm and shoulder fatigue during extended use.
- Electric string trimmer (rear-mounted battery): Typically 8–12 lbs. Balanced design because the battery counterweights the cutting head.
- Electric string trimmer (front-mounted motor): Even better balance. The Greenworks 80V uses this design — motor at the cutting head, which places the working mass where it does the work.
For 30-minute trimming sessions, the weight difference matters. For hour-plus sessions, it matters significantly. A lighter, better-balanced trimmer means less shoulder fatigue and more precise control.
Cost of Ownership
| Cost Category | Gas Trimmer | 80V Electric Trimmer |
|---|---|---|
| Purchase (unit + battery kit for electric) | 200–400 | 300–500 (kit) |
| Fuel + 2-cycle oil (10 years, weekly use) | ~300 | ~15 electricity |
| Spark plugs / air filters | ~50 | 0 |
| Trimmer line (both) | ~150 | ~150 (same) |
| Winter fuel stabilizer | ~40 | 0 |
| Carburetor cleaning / repairs | ~100 | 0 |
| Battery replacement (year 6–8) | N/A | ~$200 |
| 10-year total | 840–1,040 | 665–865 |
Electric wins on lifetime cost by a meaningful margin — mostly because there's no fuel expense and no small-engine repairs. If you already own 80V batteries from other Greenworks tools, the tool-only trimmer purchase saves another 150–200.
Maintenance — Where Electric Really Wins
Gas string trimmers are notoriously fussy. Ask anyone who's owned one for more than five years:
- Gas trimmer annual maintenance: Fuel mixing (2-cycle oil ratio must be correct), fuel stabilizer for winter, spark plug replacement, air filter cleaning, carburetor cleaning after untreated fuel sits, occasional string head repair. And the perennial issue: it won't start reliably in cold spring weather.
- Electric trimmer annual maintenance: Load new string. Clean the deflector. That's it.
Canadian winter storage is a killer for 2-cycle gas engines. Ethanol-blended fuel absorbs moisture from cold garage air, turns gummy, and clogs the carburetor. Spring startup is often when gas trimmers reveal they don't work anymore. Electric trimmers don't care about winter — remove the battery, put it on a shelf, forget about it until spring.
Noise
- Gas string trimmer: 95–105 dB. Requires hearing protection. Loud enough to disrupt neighbours.
- 80V cordless trimmer: 75–85 dB. Doesn't require hearing protection for typical use.
String trimmer work happens in short bursts throughout the yard — near neighbour fences, along property lines, close to the house. A quiet trimmer means you can do trimming work early Saturday morning without triggering complaints on quiet residential streets.
Fuel and Emissions
Two-cycle engines are among the least fuel-efficient and highest-emissions engines in common residential use. Every hour of gas trimmer use produces significant particulate emissions and unburned hydrocarbons. For Canadian homeowners who care about environmental impact, electric is meaningfully cleaner.
Fuel handling is also a real quality-of-life issue. Mixing 2-cycle oil into gas, storing fuel through cold Canadian winters, and dealing with fuel spills or fumes — none of these happen with electric.
Cold-Weather Starting — A Canadian Reality
Just like gas mowers and chainsaws, gas string trimmers struggle to start in cold weather. Below 5°C, pull-cord frustration begins. Below freezing, expect multiple attempts and possibly choke adjustments. Spring cleanup — exactly when you need the trimmer most — is when many gas trimmers reveal winter fuel damage.
Electric trimmers start immediately at any temperature. Insert battery, pull trigger, trim.
The Best 80V Electric String Trimmer for the Switch
For Canadian homeowners making the switch from gas — regular edging, weed cutting, general trimming — the Greenworks 80V 16" Front-Mounted String Trimmer Kit (2.0Ah Battery + Charger) is built for exactly this transition:
| Spec | Greenworks 80V 16" Front-Mounted String Trimmer |
|---|---|
| Voltage | 80V brushless |
| Cutting swath | 16" |
| Motor placement | Front (at the cutting head) |
| Line diameter | 0.080" dual-line |
| Speed control | Variable |
| Line advance | Bump-feed head |
| Battery included | 2.0Ah 80V |
| Charger included | Rapid charger |
| Weight (with battery) | ~11 lbs |
| Warranty | 4 years tool + battery |
| Compatible tools on platform | 75+ |
Real-world switching advantages:
Starts every time. No pull-cord ritual, no cold-weather frustration. Insert battery, pull trigger, trim.
Front-mounted motor design. Motor at the cutting head places the working mass where it does the work. Better balance during use than rear-motor designs; less shoulder fatigue on extended trimming sessions.
27cc gas-equivalent power. Cuts through thick grass, weeds, and light brush comparable to typical residential gas trimmers.
Variable speed trigger. Dial back for delicate work around garden beds; full throttle for aggressive cutting through thick growth.
Bump-feed line advance. Standard-technique line advance — tap the head on the ground to release more line. No specialty spooling required.
Kit includes 2.0Ah battery + rapid charger. Enough for typical residential trimming sessions. Larger batteries (4.0Ah, 8.0Ah) available for extended runtime.
4-year warranty on tool AND battery. Industry-leading coverage.
Compatible with 75+ Greenworks 80V tools. Same battery works across mowers, blowers, chainsaws, and more.
Making the Switch — What to Expect
Practical adjustments:
- Buy trimmer line in bulk. Standard 0.080" dual-line — cheap, universally available at any hardware store.
- Consider a larger battery for larger yards. 2.0Ah is fine for small yards; 4.0Ah adds substantial runtime for medium-to-large properties.
- Store the battery indoors during winter. Canadian cold reduces battery life if stored in unheated spaces.
- Sell your gas trimmer. Working gas trimmers hold reasonable used value — recover some of the electric upfront cost.
String Trimmer Technique
Three tips for effective trimming with any string trimmer:
- Cut with the tip of the line. The tip does the cutting; the rest of the line just wears out. Angle the trimmer so only the outer inch of line contacts the grass.
- Move slowly along the cutting path. Rushing wastes line and produces uneven cuts. A steady walking pace produces the cleanest work.
- Protect tree bark and fence posts. String trimmer line strips bark and damages painted surfaces. Keep the line at least 2" away from anything you don't want to damage.
FAQ
Does 80V really match a gas string trimmer's power?
For residential use, yes. 80V brushless motors deliver torque comparable to 25–30cc gas trimmers. Real-world cutting through thick grass, weeds, and light brush is comparable.
How long does the 2.0Ah battery last?
Roughly 30–40 minutes of continuous trimming, longer with intermittent use. Enough for typical residential trimming sessions. For larger yards, upgrade to a 4.0Ah or 8.0Ah battery.
Can this cut through weeds and thick grass?
Yes — variable speed trigger lets you dial up to full throttle for aggressive cutting. Handles typical residential weeds and thick grass without bogging.
Is 16" cutting swath enough?
For residential use, yes. 16" is the standard residential swath. Larger swaths (17"–18") exist mostly on commercial trimmers and add fatigue without meaningful residential benefit.
What kind of line does it use?
Standard 0.080" round or twist line — available at every hardware store. Universal compatibility, no proprietary refills.
Can I use this trimmer as an edger?
You can rotate the head vertical for edging use, but a dedicated edger produces cleaner edges. If you edge frequently, get the Greenworks 80V dedicated edger — same battery.
The Right String Trimmer for Canadian Homeowners
If you trim your own yard weekly during growing season and you're tired of gas trimmer maintenance, cold-weather starting issues, or fuel mixing — the Greenworks 80V 16" Front-Mounted String Trimmer Kit is built for exactly this transition. 16" cutting swath, brushless motor with 27cc-equivalent power, front-mounted design for better balance, variable speed, bump-feed head, and 4-year warranty coverage.
Keep reading:
- One Battery System Saves You Money — The Greenworks Ecosystem — Why staying inside one battery platform saves Canadian homeowners hundreds.
- Greenworks 80V vs EGO 56V — The Battery Showdown — Battery technology compared head-to-head.
- Greenworks vs Ryobi — A Canadian Buyer's Comparison — Power, price, battery tech, and Canadian availability.
- Greenworks Lawn Mower Review — Every Model for 2026 — Full lineup review across the 80V platform.