Can A Bad Battery Cause A Lawn Mower To Stall? (My Experience)

Is your lawn mower stalling or not starting up at all? One of the reasons could be a bad battery. Learn more about this in our post on Can a Bad Battery Cause a Lawn Mower to Stall? My Experience where we share our firsthand experience with this issue.

Want to know if riding lawn mowers are worth the investment? Head over to our post on Are Riding Lawn Mowers Good? My Experience to learn about the benefits and drawbacks of this type of mower.

If you’re curious about whether or not manual lawn mowers are a good choice for your yard, check out our expert advice in our post on Are Manual Lawn Mowers Any Good? Expert Advice. We explore the pros and cons of this eco-friendly option and help you decide if it’s right for you.

John Deere L100 Series Lawn Tractor Stalling Out Dead Battery
A bad battery can cause a lawn mower to stall
Signs of a bad lawn mower battery include slow or weak cranking, dimming headlights, and the battery not holding a charge
A lawn mower cannot run with a dead battery
To fix a lawn mower battery that won’t hold a charge, you can clean the battery terminals, charge the battery with a compatible charger, or replace the battery if it is damaged or too old
The lifespan of a lawn mower battery can vary, but on average, it should last 3-5 years

Does A Bad Battery Cause A Lawn Mower To Stall?

Yes, a bad battery can cause your lawn mower to stall. A dead or dying battery will not supply enough power to the engine, so it will not run efficiently and may even fail completely. 

If you suspect that your lawn mower’s hard-starting issue is caused by a weak or dead battery, check this first before going any further with diagnostics. 

The easiest way to do so is by using a voltmeter a device used for measuring the voltage of batteries to test whether it can provide sufficient electrical current for starting purposes.

If you’re having trouble starting your lawn mower, old gas may be the culprit. Check out our guide on can old gas cause a lawn mower not to start to learn how to diagnose and fix this issue.

Can A Bad Battery Cause My Lawn Mower To Stall?

Yes, a bad battery can cause your lawn mower to stall. A dead or dying battery will do this too. If your riding mower isn’t getting enough power from its batteries, then it will start to struggle and eventually stall out on you. 

This is why you should always check and replace your riding lawn mower’s batteries if they are more than 2 years old.

Will A Dead Battery Stall My Lawn Mower?

If your mower doesn’t start when you’re ready to use it, there could be several causes. Some are easy to fix, like testing the battery and making sure it’s charged or replacing it if needed.

To test a battery: remove the negative terminal first (with gloves on), then touch each terminal with a voltmeter set to 20 volts DC range. If one reads more than 12.4v DC, replace the dead one immediately! 

If both read above 12v DC but less than 12.4v DC, charge them for about 30 minutes before trying again you may have just depleted their charge slightly by measuring them (they’ll recharge in no time). 

The goal is to get both terminals’ voltage readings above 12v DC so they can provide enough power for starting up your lawn mower or other equipment powered by those batteries!

If your lawn mower battery is not holding a charge, you may be wondering if it can be recharged. Our guide on can lawn mower batteries be recharged explains the different types of batteries and how to recharge them.

How Can I Tell If The Battery Is Dead In My Lawn Mower?

  • Check the voltage of the battery.
  • Check if there is a charge in the battery, as indicated by whether or not it’s registering at least 12 volts. If it doesn’t, then you’ll need to do some charging.
  • Check if the temperature of your lawn mower’s battery is within an appropriate range a cold battery may require more time to reach full power, so don’t be surprised if they don’t turn on right away; try again in a few minutes.
  • You can also check an old battery by comparing its age with its state of health: as batteries age, their ability to hold a charge will decrease even if you’ve been using good maintenance habits like keeping them clean and dry!

What Causes A Lawn Mower To Stall When Starting It?

  • A bad battery
  • Dirty spark plugs
  • Clogged air filter
  • Overheating engine (coolant overflow tank is empty)

Some other things to look out for:

If your lawn mower stutters when you try to start it, chances are your carburetor float bowl drain is clogged. To fix this problem, remove the fuel line from the carburetor and let any water drain out. Then run some gas through it until no more bubbles appear in the line or bowl of the carburetor; then reattach it before trying again.

If your lawn mower sputters when starting after running for a long time idling at high speeds (more than 20 minutes), chances are that someone has adjusted poorly and not taken into account how much fuel flows through as needed during idle mode versus acceleration/deceleration conditions.

Which means there may be too much or too little fuel being delivered by way of air-flow changes due to throttle position change and thus causing overfilling/overflowing into its combustion chamber because there isn’t enough room left after opening up its throttle valve fully wide open so that excess pressure builds up inside cylinder head 

Causing excessive amounts of unburned hydrocarbons compounds produced during combustion process resulting in poor performance issues such as stalling symptoms caused by insufficient lubricating properties necessary required under these circumstances due lack sufficient lubrication levels needed while running engine at low speeds with high load demand

Does An Engine That Stalls Mean The Battery Is Bad?

The most common reason for a lawn mower to stall is because the battery is dead. If this is the case, one of two things will happen: either the engine will turn over but not start, or it will make several attempts before stopping completely. 

Another potential cause of stalling could be that your riding lawn mower has an issue with its spark plugs; if they are not firing properly, then it may be difficult to get going again.

If you have already tried charging your battery and have confirmed that it’s dead (by testing it with a multimeter), then there are only two possible outcomes: either your riding lawn mower starts up normally after replacing the old dead battery with a new one (in which case there was nothing wrong with it)

Or else replacing the old dead battery did not solve whatever other problem caused your riding lawn mower to stall in the first place (which means there could still be something wrong). If none of these scenarios apply to you…

Using a lawn mower can be loud, and prolonged exposure can lead to hearing damage. Check out our guide on can a lawn mower cause hearing damage to learn how to protect your hearing while using a lawn mower.

Why Do All Of My Lawnmowers Suddenly Lose Power When I Try To Start Them?

When you turn the key to start your riding mower, but it doesn’t start up, there could be a number of reasons why. The first thing to check is whether or not your battery is dead.

If you have more than one lawnmower that won’t start, it’s possible that they all have bad batteries and need replacing. If this isn’t the case, try checking for other causes by doing the following:

Check the cables on each end of the battery for corrosion or damage. If they look damaged in any way, replace them immediately before continuing with further troubleshooting 


Inspect each terminal on both ends of each cable to ensure no corrosion or loose connections exist.

Make sure that there are no other mechanical issues with either end (i.e., make sure there aren’t any disconnected wires).

How Do I Know If My Batteries Are Bad And Need Replacing For My Riding Mower?

The easiest way to tell if your batteries are dead is to inspect them. Make sure that the terminals on both batteries are clean and free of corrosion. If they’re dirty or corroded, wash them with a wire brush and apply terminal guards to prevent further damage.

If you don’t see any obvious signs of wear or damage, consult a professional who can test the voltage level coming out of your batteries. Some testing equipment is available at most auto parts stores or repair shops.

Why Does My Riding Lawn Mower Slow Down When It Rains Or Gets Cold Outside?

If you’re having trouble starting your riding lawn mower, it could be due to one of several reasons. The most common cause is a dead battery. If you’ve tried to start the lawn mower and it just won’t turn over, then this is probably the issue at hand.

The other common cause for a hard-to-start lawn mower is that the fuel filter needs to be cleaned or replaced. 

The fuel filter keeps dirt and debris out of the carburetor so that it can continue to work properly and deliver fuel to each cylinder at a steady rate. 

A dirty fuel filter can cause stalling when starting the engine because there isn’t enough air flowing through each cylinder in order for combustion to occur properly, which prevents combustion from being successful during initial cranking attempts before pulling away from an ignition source like spark plugs or glow plugs (which may not even exist on older models).

Wet grass and rain can pose a problem for lawn mowers. Learn more about how to use your lawn mower in wet conditions in our guide on can a lawn mower get wet to prevent damage and maintain your equipment.

When Should I Replace The Batteries On My Riding Lawn Mower?

If your lawn mower is more than 3 years old and you find yourself having to charge it more often, that could be a sign that the battery needs replacing. 

Also, if you notice corrosion on the terminals (the place where you would connect the charger or jump starter), this could indicate that there is an issue with the battery.

What Are Some Signs That Indicate That The Battery Needs Replacement On My Riding Lawn Mower?

If you see any of these signs, it’s time to replace your battery:

  • Your battery is old and needs to be replaced
  • The battery isn’t charging properly it might take longer than usual to charge or it might not charge at all. This can result in an engine that won’t start up or run.
  • The battery isn’t holding a charge if you leave the vehicle unused for an extended period of time, like overnight or during the winter months, then it may not start up as easily when needed (which can be dangerous).
  • There is leaking acid from the terminals of your lawn mower’s battery casing; this could indicate that there are cracks in its casing which would mean more than just replacing its batteries would be necessary


While it might seem like the battery is the problem, there are many other things that can cause your riding lawn mower to stall. 

If this happens, have your battery tested by an expert so they can determine what’s going on with it and if any repairs need to be made before you start working again.

Watering is essential for a healthy lawn, but too much water can cause problems. Check out our guide on can a lawn get too much water to learn how to avoid overwatering and keep your lawn looking its best.

Further Reading

Here are some additional resources you may find helpful for lawn mower battery issues:

Can a Bad Battery Cause a Lawn Mower to Stall?: A detailed article on the symptoms of a bad lawn mower battery and how to fix the problem.

Will a Lawnmower Run with a Dead Battery? Causes & Diagnosis: A comprehensive guide on diagnosing and fixing lawn mower battery issues.

Will a Lawnmower Run with a Dead Battery?: A brief article on whether a lawn mower can run with a dead battery and what to do in that situation.


Can a bad battery cause a lawn mower to stall?

Yes, a bad battery can cause a lawn mower to stall. If the battery is not providing enough power to the engine, the mower may not be able to run properly and may stall.

How do I know if my lawn mower battery is bad?

Signs of a bad lawn mower battery include slow or weak cranking when starting the engine, dimming headlights or other electrical components, and the battery not holding a charge.

Can a lawn mower run with a dead battery?

No, a lawn mower cannot run with a dead battery. The battery provides the initial power to start the engine, and if it is dead, the mower will not be able to start or run.

How do I fix a lawn mower battery that won’t hold a charge?

To fix a lawn mower battery that won’t hold a charge, you can try cleaning the battery terminals, charging the battery with a compatible charger, or replacing the battery if it is damaged or too old.

How often should I replace my lawn mower battery?

The lifespan of a lawn mower battery can vary depending on factors such as usage and maintenance, but on average, it should last 3-5 years. It’s a good idea to replace the battery if it is not holding a charge or is damaged.