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Can a Bad Battery Cause a Misfire? (Explained)

Since the battery plays the most significant role in operating and running a car or any other vehicle properly, thence, obviously the thought of having a bad battery inside your vehicle will make you raise a question about whether or not a bad battery causes a misfire. 

Therefore, let’s look for the answers ahead. 

Can A Bad Battery Cause A Misfire? 

A bad battery indeed can cause a misfire. As the alternator can’t charge a bad battery sufficiently, so, the battery can’t power up the engine and other electrical systems properly which results in a misfire that includes one or more symptoms like slow engine, electrical systems malfunctioning, etc.

When a car battery goes all wrong, it can’t regulate and retain sufficient power for powering up the car’s engine and several other electrical components while running the car and it causes a misfire. And cylinder misfire is one of the misfires caused by a bad battery. 

A cylinder misfire actually can be defined as an engine misfire because cylinders are a part of the engine and an engine has 4 cylinders.

So when there is a battery failure, one of the cylinders faces no combustion so the cylinder can’t controllably provide power to generate power output. As a result, a cylinder misfire aka engine misfire happens by a bad battery. 

And when more than one cylinder, like two or three cylinders are encountering misfire, random multiple misfires occurs by a faulty battery which also basically causes an engine misfire by a bad battery. 

Moreover, a bad battery can be a bad battery, an old battery, or a battery with low or weak voltage. Therefore, below each of these battery conditions are explained to let you know whether they cause a misfire or not. 

Low Or Weak Battery Voltage: 

A low or weak battery voltage certainly can cause a misfire because a car battery with low or weak voltage leads to a show fuel pump processing and this further can direct to a “lean fuel” condition.

Also, it can cause inappropriate opening of many injectors and when both of the conditions are paired up a low or weak battery voltage causes a misfire. 

Old Battery:

An old battery can also be responsible for causing a misfire, as a car battery functions properly for about 3-5 years on average.

So after this time, it starts to wear out and get old. Thereby, an old battery can’t retain enough power to power the engine and other electrical systems while a car is moving. And it causes a misfire. 

Lifeless Battery: 

A misfire with several symptoms will definitely be caused by a lifeless battery as the alternator won’t be able to charge the lifeless battery.

And the battery won’t be able to maintain power to power up the engine along with several other electrical systems sufficiently. As a result, a misfire will be caused. 

Can A Loose Battery Connection Cause Engine Misfire?

When the car battery’s connection becomes loose, the battery begins to have problems with getting charged fully and it cannot retain a sufficient amount of power to power up the engine. As a result, the engine will become slow to start which basically indicates an engine misfire.

Can A Bad Or Corroded Battery Cable Cause A Misfire?

When there is a bad or corroded car battery, primarily it will manifest symptoms like slow to crank the engine, an engine failure, stalling engine, dimming interior lights, etc.

And it’s known to all that all these symptoms clearly indicate a misfire. Therefore, it can be acknowledged that a bad or corroded battery cable can cause a misfire.

How Does A Bad Car Battery Lead To A Misfire?

As a bad battery is incapable of getting charged sufficiently by the alternator, it can’t even retain enough energy to keep powering up the engine at its optimum temperature while running the car.

Besides, a bad battery decreases the performance of other electrical systems too. And that’s how a bad car battery leads to a misfire.

Moreover, a bad battery slows down the fuel pump processing and leads to a “lean fuel” condition as well as can cause an inappropriate opening of particular injections. And both of the conditions together will cause a misfire. 

Can I Drive With A Bad Battery?

You actually can drive a car with a bad battery but the car will not move for a longer period. And it’s not even recommended to drive a car with a bad battery. So you better don’t drive a car with a bad battery. 

What Does A Bad Battery Do To Your Car?

The following are the possible hampers that a bad battery can cause to your car. Go through the points listed and explained below to read about them. 

Short Alternator Life:

As it’s known that when the car engine is functioning, the task of recharging and controlling the battery level as well as powering up many electrical components is passed to the alternator.

So when the car battery level drops below 12V, the alternator goes under a burdened condition and a constant loaded condition directly affects the alternator to have a short working life.  

Accessorial Degradation: 

Car accessories that are frequently or periodically powered up by the car battery will be lead to serious degradation in their daily performance if the car battery is bad.

As a bad car battery will never be able to power up the accessories sufficiently. And malfunctioned dashboard, heaters, seats, etc. are the examples 

Worn Out Engine: 

A bad car battery can result in a voltage surge as well as can increase the temperature. And this high amperage directs a heavy-duty pressure to the engine which leads the engine to get heated excessively. Thereby, overheating can damage the car engine. 

Higher Fuel Consumptio: 

A bad car battery will push the engine for enforcing extra power than usual and such extra enforcing will direct towards higher fuel consumption. And in the long run, it will reduce the efficiency of a car’s fuel. 

Poor Processing: 

A bad car battery will lessen the overall performance of a car’s computer. Also, hardware such as sensors will be affected badly because of a supply of low voltage from a failed battery. 

The losing of the car’s computer’s ability of closing gas cylinders while running the car is one of the serious problems caused by a bad car battery.  

How To Know If A Car Battery Needs To Be Replaced?

The accurate signs of a bad car battery have been explained below for you so that you can understand whether a car battery is needed to be replaced or not. 

Engine Is Starting Slowly: 

The car engine starting slowly is a sign that indicates that it’s time for replacing the car battery as a sluggish start is typically the very last gasp of a battery to hit the bucket before it wears out fully.

It’s because a bad battery will have less effective and worn-out components inside that will take a longer time for powering up the engine to start. 

Flickering/Dim Lights: 

When the battery is a bad one it won’t be able to run the car’s light with full power, so the lights will flicker or start dimming. And then understand that the car’s battery is required to be replaced. 


If you notice ashy elements around the metallic connection points of the car’s battery, it’s a corrosion issue, and for such corroded connectors, you might need to replace the battery. 

Because the +ve and -ve metallic connectors on the battery top can direct cause a voltage problem and trouble-starting the car. 

Electrical Malfunctions:

A bad battery will cause various electrical malfunctions such as your car’s power windows or doors won’t work properly or other electrical car accessories will work slowly/won’t work at all. Thence, in such conditions, the battery needs to be changed. 

Engine Light Is On:

If the engine light symbol appears to be constantly lightened up with a “check” notice, it often means that the car battery is bad and needs to be changed now 

An Old Battery:

A car battery comes with a lifespan of about 3-5 years on average. But factors like your driving habits, climates, electrical problems, and other affect the battery in this period. So after 3 years, it may start going wrong, therefore, replacing the battery is the only solution. 

How Often Car Battery Needs To Be Replaced? 

A car battery typically lasts for 3-5 years, so after every 3 years it’s better to replace a car battery to stay on the safe side without ruining or slowing down the engine or any other electrical systems. 

Final Thoughts 

A battery plays a significant role in running the whole car or any other vehicle so when it goes bad, surely it causes a misfire as the battery itself can’t get charged fully. So it can’t even power up the engine or other electrical systems properly, thereby, it causes a misfire.