By Graham FisherUpdated November 2026
A lawn mower that won’t start after cutting long grass is usually dealing with clogged air flow, a fouled spark plug, or a deck packed with wet clippings. Cordless electric mowers avoid most of those problems because they have no carburetor or spark plug to foul. The picks below are compared on cutting width, battery capacity for heavy loads, and how well they handle tall, dense growth.
Our top picks at a glance
- 1
TOP CHOICEBest overallPowerShare Worx Cordless Lawn Mower, 40V 17" 2-in-1 Grass Mower for 1/4 Acre, WG745View on Amazon - 2
Best for larger lotsLitheli Electric Lawn Mower Cordless, Grass Cutter Machine for 1300 Sq. Ft. LawnmowerView on Amazon - 3
Best for small mixed yardsLawnMaster 20VMWGT 24V Max 13-inch Lawn Mower and Grass Trimmer 10-inch ComboView on Amazon
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| Worx WG745 | Quarter-acre yards | Mulching and bagging |
| Litheli Cordless Lawn Mower | Larger lots | 8-gallon grass bag |
| LawnMaster 20VMWGT Combo | Small mixed yards | Includes trimmer |
PowerShare Worx Cordless Lawn Mower, 40V 17″ 2-in-1 Grass Mower for 1/4 Acre, WG745
Brushless Power, Mulching & Bagging, 2 x 4.0Ah Batteries & 4.0A Charger Included, PowerShare Worx Cordless Lawn Mower, 40V 17" 2-in-1 Grass Mower for 1/4 Acre, WG745
Best for: Tall, thick grass on quarter-acre yards
This suits owners who want a mower that handles overgrown turf without a fuel system to troubleshoot. The 40V platform and included batteries are built for sustained cutting.
Pros
- Brushless motor with mulching and bagging options
- Two 4.0Ah batteries and charger included
Cons
- Heavier than smaller push models
Litheli Electric Lawn Mower Cordless, Grass Cutter Machine for 1300 Sq. Ft. Lawnmower
Litheli Electric Lawn Mower Cordless,Grass Cutter Machine for 1300 Sq. Ft. Lawnmower with 13 in Cutting Width, 8 Gallon Capacity, Cutting Height from 1 in to 2.5 in, Includes 1 4.0 Ah Battery
Best for: Larger lots with frequent heavy cutting
A good fit for owners who let the lawn grow between cuts and need a wide deck with a generous collection bag. Cutting height adjusts from 1 to 2.5 inches.
Pros
- 13-inch cutting width covers ground quickly
- 8-gallon capacity reduces bag emptying
Cons
- Includes only one battery
LawnMaster 20VMWGT 24V Max 13-inch Lawn Mower and Grass Trimmer 10-inch Combo
LawnMaster 20VMWGT 24V Max 13-inch Lawn Mower and Grass Trimmer 10-inch Combo with 2×4.0Ah Batteries and Charger
Best for: Small mixed yards that need edging
Works well for owners who want a mower and trimmer on one battery platform, useful for cleaning up grass that grew too tall along edges and fences.
Pros
- Two 4.0Ah batteries and charger included
- Trimmer included for edges
Cons
- Narrower cutting deck for big areas
Buying Guide
Cutting Width and Deck Size
A wider deck covers more ground per pass, but it also loads more clippings under the housing. Owners of large lots should weigh that against the time saved.
Battery Capacity Under Heavy Load
Tall grass draws more current. Manufacturers typically list runtime for light cutting, so expect less when mowing thick growth. Spare batteries help on big jobs.
Bag Capacity and Mulching Options
Larger bags mean fewer stops. Mulching returns finely cut clippings to the lawn but works best when the grass is cut in small passes rather than all at once.
Cutting Height Range
Adjustable height lets you raise the deck for the first cut after a long gap, then lower it on later passes. This reduces strain on the motor and avoids a packed deck.
Good picks for this: Worx WG745, Litheli Cordless Lawn Mower
FAQ
Why does a mower stop after cutting long grass?
Wet, matted clippings can clog the discharge chute and deck, which can strain the motor or engine. Clear the deck and let the mower cool before trying again.
Should I raise the cutting height for overgrown grass?
Yes. Cutting at the highest setting first removes the top growth and makes the second pass at a normal height much easier on the machine.
Can wet grass cause starting problems?
Wet clippings and moisture can build up under the deck. Dry the deck and check for blockages before troubleshooting the drive or battery.
Conclusion
For a quarter-acre yard with thick growth, the Worx WG745 offers the most complete setup. Larger lots benefit from the Litheli’s wider deck and bag, while the LawnMaster combo suits smaller yards that also need edging. Consult the owner’s manual or a qualified repair shop if the mower still won’t start after clearing the deck.
Sources
- Power equipment safety guidance from the U.S. Consumer Product Safety Commission (cpsc.gov)
- Lawn mowing height and turf care recommendations from University of Illinois Extension (extension.illinois.edu)
Related reading
- Yardworks Lawn Mower Won't Start After Winter: 6 Fixes That Work
- Toro Lawn Mower Won't Start After Winter: 7 Fixes That Work
- Toro Lawn Mower Won't Start After Sitting: 7 Causes and Fixes
- Riding Lawn Mower Won't Start After Winter: 7 Fixes to Try First
- Riding Lawn Mower Won't Start After Running: 7 Causes and Fixes
About Graham Fisher
Graham Fisher is part of our editorial team and reviews and edits our lawn mowers guides, checking product details against manufacturer specifications and owner feedback.
