Cordless Lawn Mower Won’t Start: The Ultimate Guide


Is there anything more frustrating than a cordless lawn mower that won’t start? You’ve got your gloves on, your hat firmly in place, and you’re ready to tackle that unruly lawn, but the mower isn’t cooperating. Fear not, we’re here to help you troubleshoot your pesky lawn mower issues and get you back to your weekend gardening in no time.

The Basics of Cordless Lawn Mowers

How a Cordless Lawn Mower Works

A cordless lawn mower is powered by a rechargeable battery. When you turn it on, the battery supplies power to the motor, which then spins the cutting blade. This operation is simplicity itself – until something goes wrong.

Components of a Cordless Lawn Mower

The core components of a cordless lawn mower are the battery, the switch (which turns the mower on and off), and the motor. The motor spins the blade that cuts the grass. When any of these components fail, the mower won’t start.

Common Reasons Your Cordless Lawn Mower Won’t Start

Battery Issues

Battery Not Charged

This is the most common reason a cordless lawn mower won’t start. If the battery isn’t charged, there’s no power for the motor.

Battery Age

The average lifespan of a lawn mower battery is about three to five years. As the battery ages, its ability to hold a charge diminishes, which can cause starting issues.

Switch Problems

Switch problems can also prevent the mower from starting. If the switch is faulty, it won’t signal the battery to supply power to the motor.

Faulty Motor

A faulty motor can’t spin the blade. Without the blade spinning, the mower can’t cut grass.

Troubleshooting Steps for a Non-starting Cordless Lawn Mower

Checking the Battery

Check if the battery is charged. If it’s not, charge it. If the battery is old or won’t hold a charge, it might be time to replace it.

Examining the Switch

If the battery is good, examine the switch. Is it stuck or does it not move smoothly? You might need to replace it.

Inspecting the Motor

If the switch is good, check the motor. Is it making a humming sound or not making any noise at all? A quiet motor might indicate a problem.

When to Seek Professional Help

If you’ve checked everything and the mower still won’t start, it’s probably time to seek professional help. A qualified repair technician can diagnose and fix more complex issues.


A cordless lawn mower that won’t start can be a nuisance, but understanding the common problems and knowing how to troubleshoot them can save you time, frustration, and potentially money. With this guide, you’re well equipped to tackle those issues head-on and keep your lawn looking its best.


  1. How often should I charge my cordless lawn mower’s battery? You should charge your battery after each use, even if it’s not completely drained.

  2. How long does a cordless lawn mower’s battery last? On average, a lawn mower battery lasts three to five years.

  3. What could be wrong if my lawn mower’s battery and switch are good, but it still won’t start? If your battery and switch are in good condition but your mower won’t start, the motor might be the problem.

  4. Can I fix a faulty motor by myself? Unless you have experience in electric motor repair, it’s safer and more efficient to have a professional handle it.

  5. How often should I service my cordless lawn mower? It’s a good idea to service your cordless lawn mower at least once a year to keep it in top condition.