By Lucy FitzgeraldUpdated November 2026
When a Greenworks electric lawn mower won’t start, the fix is often a battery, a safety key or a switch, but some owners eventually decide a replacement mower makes more sense. This list covers five Greenworks push mowers in different sizes and battery platforms. Each was selected using manufacturer specifications, the reputation of the Greenworks brand, and patterns that owners commonly report in reviews, including deck width, battery capacity, start method and suitability for small versus large yards. Start with the troubleshooting steps first, then use this guide if you decide to replace the machine.
Our top picks at a glance
- 1
TOP CHOICEBest overallGreenworks 40V 16in Push Lawn MowerView on Amazon - 2
TOP CHOICEBest for large yardsGreenworks 80V 21in Push Lawn MowerView on Amazon - 3
TOP CHOICEBest for mulching and baggingGreenworks 60V 17in Push Lawn MowerView on Amazon - 4
Best budget pickGreenworks 48V 20in Push Lawn MowerView on Amazon - 5
Best for longer runtimeGreenworks 40V 21in Push Lawn MowerView on Amazon
Our Top Picks
| Product | Best for | Key feature |
|---|---|---|
| Greenworks 40V 16in Push Lawn Mower | Small, flat yards | Push-button start, gas-free operation |
| Greenworks 48V 20in Push Lawn Mower | Budget-minded owners with medium lawns | Dual batteries and brushless motor |
| Greenworks 80V 21in Push Lawn Mower | Large yards | High-voltage platform, 60-minute rapid charger |
| Greenworks 60V 17in Push Lawn Mower | Mulching and bagging | 2-in-1 mulching and bagging |
| Greenworks 40V 21in Push Lawn Mower | Medium to large yards needing longer runs | 5.0 Ah battery for extended runtime |
Greenworks 40V 16in Push Lawn Mower
GreenworksQuiet walk-behind mower with push-button start; gas-free operation eliminates fumes and pull starts 40V 16in Push Lawn Mower, 4.0 Ah Battery and Charger
Best for: Small, flat yards where a compact mower is easy to store and push.
This is a good match for owners with small lawns, townhouse yards or narrow side strips who want a lightweight machine with push-button starting. Because it uses a battery rather than a gas engine, there is no fuel to stale and no pull cord to wear out.
Key specs
- 16-inch cutting deck
- 40V battery platform
- Battery and charger included (4.0 Ah battery per listing)
- Push-button start
Pros
- Light and easy to maneuver around beds and edges
- No gasoline, oil changes or spark plugs
- Push-button start avoids pull-cord strain
Cons
- Runtime may be limited on larger lawns
- Narrow deck means more passes on medium yards
Bottom line: A strong choice for small yards and owners who want the simplest start-and-go experience.
Greenworks 48V 20in Push Lawn Mower
GreenworksBrushless motor with LED headlight and dual port rapid charger, push-button start for easy lawn care. 48V (24V x 2) 20in Push Lawn Mower, (2) 4.0 Ah Batteries Kit
Best for: Budget-minded owners with medium lawns who want a wider deck.
This model uses two 24V batteries together, giving a 48V system with a 20-inch deck. It suits owners who want more cutting width than a 16-inch machine without moving up to a high-voltage platform.
Key specs
- 20-inch cutting deck
- 48V system (24V x 2)
- Two 4.0 Ah batteries included
- Brushless motor and LED headlight
Pros
- Two batteries let you swap or charge in turn
- Wider deck covers medium lawns faster
- LED headlight helps with early or late mowing
Cons
- Two batteries add weight and charging time
- Not as compact for storage as the 16-inch model
Bottom line: A practical middle-ground choice for medium yards when budget is a concern.
Greenworks 80V 21in Push Lawn Mower
GreenworksBrushless motor with 60-min rapid charger; push-button start and quiet operation for large yard mowing. 80V 21in Push Lawn Mower, 4.0 Ah Battery and Charger
Best for: Large yards where runtime and cutting width matter most.
The 80V platform is Greenworks’ higher-voltage option, aimed at owners with large lawns who want a wide deck and a fast charge cycle. It is a better fit than smaller models when a single battery needs to cover a big area.
Key specs
- 21-inch cutting deck
- 80V battery platform
- 4.0 Ah battery and charger included
- Brushless motor and rapid charger
Pros
- High-voltage system suited to large areas
- Rapid charger reduces downtime between sessions
- Wide deck reduces total mowing time
Cons
- Heavier than smaller push models
- Overkill for small or average-size lawns
Bottom line: Best for owners with large yards who want the most cutting power from a battery mower.
Greenworks 60V 17in Push Lawn Mower
GreenworksBrushless motor with 2-in-1 mulching/bagging and 40-min runtime; push-button start for home lawn mowing. 60V 17in Push Lawn Mower, 4.0 Ah Battery and Charger
Best for: Mulching and bagging on small to medium lawns.
This model combines mulching and bagging in one machine and has a runtime listed around 40 minutes. It is suited to owners who want to bag clippings in some areas and leave them to mulch in others.
Key specs
- 17-inch cutting deck
- 60V battery platform
- 2-in-1 mulching and bagging
- 4.0 Ah battery and charger included
Pros
- Mulching and bagging in one unit
- Push-button start for easy operation
- Mid-size deck balances speed and maneuverability
Cons
- Runtime may fall short on large lawns
- Bagging capacity limits long sessions without emptying
Bottom line: A good fit for owners who want flexibility between mulching and bagging on small to medium yards.
Greenworks 40V 21in Push Lawn Mower
GreenworksBrushless push mower with quiet operation; gas-free design eliminates fumes and pull starts for hassle-free mowing. 40V 21in Push Lawn Mower, 5.0 Ah Battery and Charger
Best for: Medium to large yards that need longer runs per charge.
This model pairs a 21-inch deck with a 5.0 Ah battery, which gives more capacity than the standard 4.0 Ah pack on smaller Greenworks models. It suits owners who want a wide cut without moving to a higher voltage platform.
Key specs
- 21-inch cutting deck
- 40V battery platform
- 5.0 Ah battery and charger included
- Brushless, quiet operation
Pros
- Larger battery capacity for longer sessions
- Wide deck covers more ground per pass
- Gas-free and quiet compared with gas mowers
Cons
- Heavier than the 16-inch model
- Full recharge takes longer than rapid-charge platforms
Bottom line: A balanced choice for medium-to-large lawns when you want more battery capacity without the 80V platform.
Buying Guide
Deck size and yard size
Match deck width to your lawn. A 16-inch deck suits small, tight spaces; 17 to 21 inches covers medium to large lawns with fewer passes. Wider decks finish faster but are heavier and harder to steer around obstacles.
Good picks for this: Greenworks 40V 16in Push Lawn Mower, Greenworks 80V 21in Push Lawn Mower
Battery voltage and platform
Voltage (40V, 48V, 60V, 80V) generally signals cutting power and capacity. Higher-voltage platforms handle thicker grass and larger areas, while 40V models are usually lighter and more compact.
Good picks for this: Greenworks 60V 17in Push Lawn Mower, Greenworks 48V 20in Push Lawn Mower
Battery capacity and runtime
Amp-hour ratings (such as 4.0 Ah or 5.0 Ah) indicate capacity. A higher Ah rating usually means longer runtime per charge, though actual results depend on grass height, moisture and deck size. Check whether a spare battery is included.
Good picks for this: Greenworks 40V 21in Push Lawn Mower, Greenworks 48V 20in Push Lawn Mower
Charging time and charger type
Rapid chargers reduce downtime between mowing sessions. If you have a larger yard, a model with a fast charger can make the difference between finishing in one session or two.
Good picks for this: Greenworks 80V 21in Push Lawn Mower, Greenworks 40V 21in Push Lawn Mower
Starting method
Push-button start avoids the wear and strain of a pull cord and is easier for people with limited upper-body strength. Confirm that the mower includes a safety key or bail bar, as these are standard safety features that must be engaged before the motor runs.
Good picks for this: Greenworks 40V 16in Push Lawn Mower, Greenworks 60V 17in Push Lawn Mower
Mulching, bagging and discharge
Decide whether you want to mulch, bag or side-discharge clippings. Bagging keeps lawns clean but needs emptying; mulching returns nutrients to the lawn but works best with regular mowing and dry grass.
Good picks for this: Greenworks 60V 17in Push Lawn Mower
Care and long-term reliability
Keep battery contacts clean, store batteries indoors at moderate temperatures, and avoid leaving packs fully discharged for long periods. Following the manufacturer’s charging and storage instructions helps preserve capacity over time.
Good picks for this: Greenworks 48V 20in Push Lawn Mower, Greenworks 40V 21in Push Lawn Mower
FAQ
Why won’t my Greenworks electric lawn mower start?
The most common causes are a discharged or improperly seated battery, a safety key or bail bar not engaged, a loose connection, or a faulty power switch. Start by fully charging the battery and reseating it, then check the safety features.
Does a Greenworks battery need to be fully charged to start the mower?
A low battery can prevent the mower from starting or cause it to stop under load. Charging to full before mowing is the simplest first step.
How long should a Greenworks battery last?
Lifespan depends on charge cycles, storage conditions and use. Following the manufacturer’s charging and storage guidance generally extends battery life.
Are Greenworks mowers suitable for large lawns?
Higher-voltage models with wider decks, such as the 80V platform, are better suited to large areas. Smaller 40V models are better for compact yards.
Is it worth replacing a Greenworks mower instead of repairing it?
If diagnostic steps and inexpensive parts do not restore starting, or the motor or electronics appear damaged, replacement may be the practical choice. For electrical repairs beyond battery and switch checks, consult a qualified small-engine or power-equipment technician.
Is a battery mower better than a gas mower?
Battery mowers are generally quieter, require no oil changes or fuel, and produce no exhaust. Gas mowers can offer longer runtime and more power for very heavy use.
Conclusion
For small, flat lawns, the 40V 16-inch push mower is the simplest option. Owners with medium yards who want two batteries may prefer the 48V 20-inch model. For large lawns that need the most cutting power, the 80V 21-inch mower fits best. The 60V 17-inch model suits mulching and bagging, and the 40V 21-inch with a 5.0 Ah battery is a balanced pick for longer runs. Before replacing any mower, complete the basic checks first, since a discharged battery or disengaged safety key is a common cause of a no-start.
Sources
- Guidance on battery care, charging and energy use for battery-powered equipment (energy.gov)
- Consumer safety information on power equipment and lawn mower hazards (cpsc.gov)
- Product safety certification standards relevant to electrical lawn equipment (ul.com)
Related reading
- Toro Electric Start Lawn Mower Won't Start: 8 Parts and Fixes Compared (2026)
- Greenworks Lawn Mower Won't Start: 9 Fixes to Try First
- Yardman Lawn Mower Won't Start: 8 Causes and Fixes (2026)
- Yard Machines Lawn Mower Won't Start: 7 Causes and Fixes
About Lucy Fitzgerald
Lucy researches and writes buying guides and how-to articles on lawn mowers. Picks are based on product specifications, brand reputation and patterns in owner feedback, and are updated as new models come out.
