A bumpy lawn punishes regular mowers. Wheels scalp the high spots, decks bounce over ruts, and you end up re-cutting the same patch twice just to get an even look. I’ve put together nine cordless and reel options that handle rolling terrain, soft dips, and uneven roots with far less drama. Some are light enough to glide over contour changes, others use bigger wheels or pivoting decks that track the ground, and a couple skip batteries altogether for the simplest possible push.
An Overview Of The Picks
Greenworks 80V 21in Push Lawn Mower 4.0 Ah
Casince 17in Cordless Walk Behind Lawn Mower
American Lawn Mower 1304-14GC 14in 5-Blade Reel
Worx 20V 14in Cordless Lawn Mower WG733.1
Worx 40V 14in Cordless Lawn Mower WG735
Worx 40V 17in Cordless Lawn Mower WG745
American Lawn Mower 1815-18 18in Push Reel
EGO Power+ 56V 21in Cordless Lawn Mower LM2112
American Lawn Mower 1204-14 14in 4-Blade Reel
The Strengths Of Each Pick
The Greenworks 80V lands at the top for a reason: a 21-inch steel deck, brushless motor, and an 80V battery system that delivers the kind of torque you usually get from gas. A brushless motor uses electronic rather than brush-based commutation, which generally means longer life and quieter operation. For homeowners wrestling with rolling terrain, the wide deck flattens out uneven sections with each pass, and the single-lever height adjustment lets you drop the deck into thick patches without stopping.
Run time stretches up to about 60 minutes on a fully charged 4.0Ah pack, with the rapid charger topping it back up in roughly an hour. For a half-acre lawn with mixed grades, that’s enough to finish without babysitting the battery. The 80V platform also shares batteries with other Greenworks tools, so expanding your kit later is painless. Compared to the smaller Worx options below, this one trades portability for raw cutting authority.
Positive Takeaways
- Brushless motor delivers strong torque for tall or thick growth on slopes.
- 21-inch deck covers more ground per pass, so uneven sections finish faster.
- Rapid charger refills the 4.0Ah battery in roughly an hour.
- Single-lever height adjustment adapts to changing lawn conditions without tools.
- Battery platform is shared across the wider Greenworks 80V lineup.
Things To Consider
- Heavier than compact cordless models, which can wear out arms on steep grades.
- Run time depends heavily on grass thickness and deck height.
- Steel deck needs wiping down after wet mowing to prevent corrosion.
Key Specs
Built With In Mind
Homeowners with mid to large lawns that include dips, swales, and sloped sections, where the wider deck and stronger motor pay off fastest.
Reach For A Different Pick When
The Worx 40V 17in Cordless Lawn Mower WG745 suits shoppers who want a lighter cordless option on a quarter-acre lot.
The Casince 17-inch cordless model leans into runtime, pairing two 20V 4.0Ah batteries so you can mow for longer stretches without a swap. Six height settings between 1 and 3 inches give you room to experiment on bumpy ground, raising the deck over uneven spots and dropping it low on the smooth sections. The 17-inch cutting width sits in the middle of the pack, wider than the 14-inch Worx picks but narrower than the 21-inch Greenworks.
For small to medium lawns up to about 5,380 square feet per charge under typical test conditions, this is a measured, budget-friendly workhorse. The dual-battery system also means you can hot-swap if a second pack is charged and ready. It doesn’t have the heavy-duty torque of the Greenworks 80V, so densely overgrown or steeply sloped lawns might push it, but for routine cuts on rolling ground, the runtime stretch is the real headline.
A Strong Showing
- Dual 20V 4.0Ah batteries extend mowing sessions on mid-size lawns.
- Six height settings from 1 to 3 inches handle varied grass lengths.
- Covers roughly 5,380 square feet per charge under standard test conditions.
- 17-inch deck balances maneuverability with pass width.
Worth Noting
- Lower voltage limits torque in thick, tall grass.
- Two batteries add weight over single-pack designs.
Made For
Households on tight budgets who need extra runtime on small or mid-size yards with mild contour changes.
A Better Fit Elsewhere
The Greenworks 80V 21in Push Lawn Mower 4.0 Ah fits shoppers needing more torque on larger, steeper lots.
Reel mowers take a different approach to bumpy lawns: no motor, no battery, no noise. The 1304-14GC pairs a 14-inch cutting reel with 5 heat-treated alloy steel blades and 10-inch polymer wheels. Alloy steel holds an edge far longer than basic stamped steel, so the cutting quality stays consistent season after season. The polymer wheels are light and tough, rolling smoothly over uneven turf without the heavy clatter of metal rims.
Cutting height adjusts from 1 to 2.25 inches via a scissor-action reel mechanism, which slices grass like scissors rather than tearing it the way rotary blades do. That means cleaner cuts on the leaf tips and a visibly healthier lawn over time. The included grass catcher catches clippings as you go. The honest read is this: reel mowers handle uneven ground fine when grass stays short and consistent, but anything over 4 inches tall is real work to push through.
Practical Pluses
- Scissor-action reel cut produces clean blade tips and healthier turf.
- Heat-treated alloy steel blades hold their edge for years.
- Zero emissions and near-silent operation for early-morning mowing.
- 10-inch polymer wheels roll smoothly over mild contour changes.
- Grass catcher included for tidy finishes.
Room For Improvement
- Struggles with grass over 4 inches tall, requiring multiple passes.
- No power assist means effort scales with lawn size.
- Blade adjustments need occasional tuning to keep cuts even.
Best Suited To
Eco-minded homeowners with small, well-maintained lawns who want silent operation and zero fuel costs.
Swap It Out When
The Worx 40V 14in Cordless Lawn Mower WG735 is the smarter call for shoppers who want motorized help on rolling ground.
The Worx WG733.1 is the most compact cordless option in this roundup, and that compactness is genuinely useful on bumpy ground where heavier mowers bounce and dig in. A brushless motor keeps weight and noise down while still delivering solid cutting power for small gardens. The 14-inch deck slips between tight landscaping beds and narrow gate openings that wider mowers can’t navigate.
A 20V 5.0Ah PowerShare Pro battery covers up to about 3,200 square feet on a single charge, which suits city lots and side-yard strips rather than sprawling lawns. The 2-in-1 design switches between bagging and mulching modes, letting you adapt to grass conditions on the fly. If your bumpy lawn is more about tight corners and rolling edges than wide-open slopes, this little mower punches above its weight.
A Favorable Mix
- Compact 14-inch deck fits through gates and tight beds.
- Lightweight build makes it easy to push over uneven ground.
- Brushless motor keeps noise and vibration low.
- 2-in-1 bagging and mulching for flexible cleanup.
Honest Caveats
- 20V platform limits torque in thick or wet grass.
- Smaller deck means more passes on mid-size lawns.
Key Specs
Right Fit For
City dwellers and small-yard homeowners who value maneuverability and quiet operation over wide-deck efficiency.
Look Elsewhere When
The Worx 40V 17in Cordless Lawn Mower WG745 serves shoppers who need a wider deck and stronger battery on bigger lots.
The WG735 steps up to 40V power while keeping the 14-inch deck size, and that combination matters on bumpy lawns. IntelliCut technology automatically adjusts torque output when the blades hit thicker grass, so you don’t stall mid-slope when the growth suddenly gets dense. A 20V 4.0Ah battery (running at 40V through the dual-battery architecture) covers up to roughly 1/8 acre per charge. The optimized deck with Airflow tech channels clippings efficiently for cleaner cuts.
For lawns with mixed grades where some spots grow faster than others, the adaptive torque is genuinely useful. You push at a steady walking pace and the mower handles the resistance changes. The 1/8-acre coverage lands this firmly in the small-lawn category, but within that range it punches well above its size. Owners commonly report that IntelliCut keeps the cut consistent even when grass conditions change across the same yard.
Good Reasons To Consider
- IntelliCut torque adjustment handles variable grass thickness.
- Optimized Airflow deck design improves cutting and bagging efficiency.
- Brushless motor delivers strong performance in a small footprint.
- Covers up to about 1/8 acre on a single charge.
Trade Offs
- 14-inch deck means more passes on larger lawns.
- Adaptive torque can drain battery faster in thick growth.
- Plastic deck construction feels lighter than steel alternatives.
Who Will Love This
Homeowners with small, undulating lawns who want smart torque management without paying for a 21-inch deck.
Consider Something Else When
The Worx 40V 17in Cordless Lawn Mower WG745 fits shoppers needing a wider deck on quarter-acre or bigger properties.
The WG745 is the Worx platform’s mid-size sweet spot for uneven ground. A 17-inch brushless deck pairs with two 20V 4.0Ah PowerShare batteries for genuine quarter-acre coverage without gas-engine hassles. The dual-port charger refills both packs at once, so downtime between sessions stays short. For homeowners who already own Worx 20V or 40V tools, the battery compatibility is a quiet perk that adds up fast.
Brushless motors run cooler and last longer than brushed equivalents, and on rolling terrain that translates to consistent cutting power when the deck angles over a slope. The 2-in-1 mulching and bagging design handles spring growth and summer maintenance equally well. On steeper patches, you may find the extra battery weight adds some push effort, but on moderate bumps the wider deck tracks ground changes more smoothly than narrower alternatives.
What Makes Sense
- Dual 20V 4.0Ah batteries cover up to roughly 1/4 acre per charge.
- 17-inch deck balances width with maneuverability on rolling lawns.
- Battery compatible with the wider Worx 20V PowerShare ecosystem.
- Dual-port charger refills both packs simultaneously.
Points To Keep In Mind
- Heavier than single-battery models due to the dual-pack design.
- Plastic deck requires care to avoid cracking on hard impacts.
- Less torque than the 56V EGO for very tall or wet grass.
Feature Snapshot
Perfect Match For
Shoppers with quarter-acre lots who already use or plan to invest in the Worx PowerShare battery platform.
Not Your Match When
The Greenworks 80V 21in Push Lawn Mower 4.0 Ah suits homeowners tackling larger, steeper lawns needing maximum torque.
The 1815-18 is the wide-deck option in the reel mower category, and 18 inches of cutting width means you finish small to medium lawns in noticeably fewer passes. Five heat-treated alloy steel blades handle the cutting, while the height adjustment ranges from 1/2 inch to 2-3/4 inches. That wide adjustment window is the key feature for bumpy ground, because you can raise the deck over uneven spots and lower it on flat stretches for that crisp putting-green look.
The included Reel-Deal 5-year manufacturer protection plan is unusual in the reel category, where most warranties run shorter. For shoppers who plan to maintain the same mower for many seasons, that coverage adds real value. The trade-off is effort: at 18 inches wide with five blades, this mower takes more push force than narrower reels, especially through thicker grass. On rolling lawns with consistent short growth, though, it rewards the effort with a clean, scissor-cut finish.
Where It Helps
- 18-inch deck covers more ground per push than narrower reels.
- Wide height adjustment from 1/2 inch to 2-3/4 inches.
- Heat-treated alloy steel blades resist dulling.
- 5-year manufacturer protection plan included.
Softer Spots
- Requires more push force than 14-inch reel alternatives.
- No motor assist on thick or tall grass patches.
Who Should Grab It
Eco-focused homeowners with small to medium lawns who want a wider reel and the longest coverage in the category.
Another Choice May Suit
The Worx 40V 14in Cordless Lawn Mower WG735 fits shoppers preferring motorized cutting on small, undulating lawns.
The EGO LM2112 is the torque leader of the cordless group, delivering up to about 6.0 foot-pounds of cutting torque that competes head-to-head with gas mowers. Foot-pounds of torque measures the rotational force the blade can apply to grass, so higher numbers mean the mower powers through dense growth instead of bogging down. A high-efficiency brushless motor backs that torque up with low vibration and a long service life. For demanding lawns with thick patches, this is the cordless pick that comes closest to gas performance.
A 56V 4.0Ah ARC Lithium battery runs the system for up to about 35 minutes per charge, and the rapid charger refills it fairly quickly between sessions. The 21-inch deck matches the Greenworks for width, but EGO’s 56V architecture pushes more power to the blade. On heavily contoured lawns with rough patches, you may notice the extra battery weight during long pushes, but the cutting consistency rarely falters.
Strengths Worth Knowing
- Up to 6.0 foot-pounds of cutting torque rivals gas mowers.
- 21-inch deck covers wide rolling lawns efficiently.
- Brushless motor ensures low vibration and long motor life.
- 56V ARC Lithium battery delivers consistent power output.
Where It May Fall Short
- Heavier than smaller cordless options, which wears out arms faster.
- 35-minute run time may require a battery swap on larger lots.
- Premium positioning means a steeper investment than basic cordless picks.
Feature Rundown
Whose Shelf It Belongs On
Homeowners with thick, demanding grass on uneven ground who want gas-rivaling cutting power without engine maintenance.
Skip It When
The Greenworks 80V 21in Push Lawn Mower 4.0 Ah suits shoppers wanting similar cutting width at a different voltage platform.
The 1204-14 is the lightest reel mower in this lineup at just 19 pounds, which makes it the friendliest entry point for anyone new to push-reel cutting. Four blades handle the cutting action across a 14-inch deck, with adjustable blade height from 0.5 to 1.75 inches. 8.5-inch polymer wheels keep the mower tracking smoothly over minor contour changes without adding meaningful weight.
Best suited for turf grasses under 4 inches tall, this is the kind of mower you pull out of the shed for quick touch-ups on a small lawn rather than heavy weekly maintenance. The narrow cut window means more passes than wider reels, but the low effort per pass compensates. For shoppers stepping into reel mowing for the first time, the simplicity and light weight make the learning curve gentle.
Reasons It Performs
- Lightweight 19-pound design is easy to push and store.
- Adjustable blade height from 0.5 to 1.75 inches.
- Low maintenance with no motor, battery, or fuel.
- Compact footprint fits narrow side yards and small lots.
Small Caveats
- Limited to grass under 4 inches tall for effective cutting.
- Narrow 14-inch deck requires more passes than wider options.
- No grass catcher included with this model.
Right Fit For
First-time reel mower users with small, level-to-mildly-rolling lawns who want the simplest possible cutting experience.
A Better Fit Elsewhere
The American Lawn Mower 1304-14GC 14in 5-Blade Reel suits shoppers who want the added benefit of a grass catcher at the same deck size.
What To Weigh Before Choosing a Mower for Bumpy Ground
Wheel and Deck Design
Bumpy lawns punish small wheels and rigid decks. Bigger wheels roll over ruts and root heaves without catching, and a deck that floats slightly over uneven ground produces a more even cut. Look for rear wheels at least 8 inches across, and check whether the deck pivots or stays fixed. Reel mowers with polymer wheels handle mild contour changes well, while cordless rotary mowers with brushless motors usually track the ground better than cheaper brushed designs.
Weight and Push Effort
A heavier mower feels stable but tires out arms on slopes, while a featherweight mower bounces over dips instead of cutting them. Cordless models around 40 to 50 pounds strike a reasonable balance for most homeowners. Reel mowers under 25 pounds are easiest to push but require more effort through tall grass. For lots with mixed grades, a midweight option with a brushless motor is often the most forgiving.
Power Source and Run Time
Battery voltage matters more than capacity for bumpy lawns. Lower-voltage systems (20V) handle routine cuts but bog in thick growth, while 40V and above power through dense patches. Reel mowers skip the power question entirely, trading effort for silence and simplicity. Run time scales with battery capacity: a 4.0Ah pack typically covers a quarter-acre or less, while dual-battery designs extend that range considerably.
Cutting Height Range
Adjustable height is essential when the lawn has uneven spots. A range from 1 to 3 inches gives enough flexibility to raise the deck over high patches and drop it low on flat areas. Reel mowers with very low minimum heights (under 1 inch) suit manicured turf, while rotary cordless mowers with 3-inch maximum heights handle taller summer growth better.
Key Considerations Across These Picks
Where Shoppers Go Wrong
The most common mistake is choosing a mower by deck width alone, then discovering the wheels are too small for the yard’s contour changes. Wide decks cut faster but only when the mower tracks the ground; small wheels on a 21-inch deck create more scalping than they solve. Another trap is underestimating run time on cordless models. Manufacturers list maximum run times under ideal conditions, and real-world cuts through thick grass can cut that figure in half. Pick a battery with 20% more capacity than you think you need.
Where The Extra Money Goes
Higher-tier models in this category put the budget into brushless motors, larger battery platforms, and wider decks. A brushless motor lasts longer and runs quieter than a brushed one, which matters over years of weekly mowing. Bigger batteries mean fewer mid-cut swaps but add weight. Wider decks save time on open ground but make storage trickier. For shoppers with demanding or large lawns, the upgrade to 56V or 80V architecture pays back in consistent power and longer motor life.
Frequently Asked Questions
Do reel mowers really work on bumpy lawns?
Yes, for short, consistent grass on mild contour changes. Reel mowers with polymer wheels track the ground well, though they struggle with grass over 4 inches tall or steep dips. For more extreme unevenness, a cordless rotary with bigger wheels is usually a better fit.
What deck size handles bumps best?
A 17 to 21-inch deck covers uneven ground efficiently, but bigger wheels matter more than deck width on truly bumpy lawns. Look for rear wheels at least 8 to 10 inches across so the mower rolls over ruts instead of catching on them.
How important is brushless motor technology?
Brushless motors run cooler, last longer, and deliver more torque than brushed equivalents, which matters most on slopes and thick patches where the blade meets resistance. For routine flat-lawn mowing, brushed motors still get the job done.
Can cordless mowers handle wet or tall grass?
They can, but run time drops noticeably. Lower-voltage systems (20V) bog in wet conditions, while 40V and 56V platforms power through with reduced efficiency. Drying the lawn first or raising the deck height helps extend battery life and cut quality.
How do I store a cordless mower through winter?
Remove the battery and store it indoors at moderate temperature, since cold storage permanently reduces lithium battery capacity. Wipe down the deck to prevent corrosion, and fold or store the mower in a dry spot like a garage or shed.
Bottom Line
The right mower for bumpy ground depends on lawn size, slope severity, and tolerance for physical effort. For most homeowners with quarter-acre lots, the Worx WG745 or Greenworks 80V cover uneven terrain efficiently without gas-engine maintenance. Smaller lawns or eco-focused shoppers get excellent results from the American Lawn Mower reels, while demanding cuts on rolling terrain benefit from the EGO LM2112’s gas-rivaling torque. Match the mower to your specific lawn profile rather than chasing the widest deck or biggest battery, and the results stay consistent season after season.