Can A Bad Ground Cause An Alternator To Overcharge?

Disclosure: This page contains affiliate links, As an Amazon Associate, I earn from qualifying purchases (at no extra cost to you). Learn More

Overcharging is when your electrical component or device exceeds the required volts or percentage. However, your car has different connections that would determine how your car’s components would operate. An alternator and a ground strap are extensively vital in your automobile.

Plus, the voltage of your alternator and battery determines the state of your car. Overcharging the alternator would generate surplus voltage to the battery. “Can a bad ground cause an alternator to overcharge?”

Yes, a bad ground can cause an alternator to overcharge. How? If your car battery loses one of its attachments, the alternator notices a clear circuit and gradually overcharges.

The charge could attain a high voltage and some electronic switch modules have an element named safety dump weight. This would stop the electronic switches from burning as a result of the high voltage.

 The ground in a car is also known as a ground wire. If it is bad, It could cause overcharging in an alternator and other unexpected mechanical issues could arise in the car.

However, a bad ground effect is always overlooked because of a decreased charge circuit, but they cause a big effect on the alternator. To detect the alternator for an overcharge, you can test from the negative angle of the charging circuit. 

Table Of Contents

Can a bad ground ruin an alternator?

Yes, bad ground ruins an alternator and can also affect the charging system of an alternator. A car’s charging network is determined by good ground — in other words, if the ground wiring is bad, the battery might not charge, and the battery might overcharge.

This ground wire is a huge black cable that attaches to the truck’s battery negative end, to the chassis of the vehicle. The ground wire is the organization of the whole car’s electrical component.

Every bit of current that flows all through your car passes through the ground wire, so, if you have a bad ground wire, it would affect all the electrical connections, plus the alternator. It wouldn’t be a little issue, it would stop the car from moving. If it ruins your alternator, then your battery would either be unable to charge, or it would overcharge and blow up the battery.

The whole electrical connection of your car is the dashboard lights, the ignition, the battery, and the terminals, etc. So, this means while checking your car, you must have your ground wire checked. This is because it could be why your alternator is malfunctioning. 

Trending Searches

What would happen if your alternator is not grounded?

If your alternator is not grounded, it could cause a bad charging product. How? The battery has two terminals which are- positive and negative terminals. While the alternator has access to the battery wire, the battery positive power attachment, and the engine ground wire, the alternator can overcharge and it would be caused by the negative terminal of the battery. 

However, all modern cars have grounded alternators, unlike the cars made in the 1970s and 1980s, which were mounted with rubber and possessed a different braided wire. Some of them were separated internally from the rack and needed a good ground cable.

Thus, what occurred in some situations (when the ground wire was spoilt or missed when connecting) is that the alternator performed its duty, and manufactured the mandated volt. 

However, the battery would not function because, without the ground wire, the circuit was incomplete. In other cases, the volt regulator was different from the high volts alternator, which was a disadvantage to the rectifying tube in the alternator. 

This causes fumes to leak out and it is a situation because new fumes are exploited. So, a grounded alternator makes your car work perfectly. It would also make other components of the vehicle function. 

What part of the charging network retains the alternator from overcharging the battery?

The volt regulator retains the alternator from overcharging the battery. It performs this job by decreasing the current in the alternator as the engine accelerates. So, in this case, if the regulator is faulty, it would transmit probably a limited or surplus charge to the battery.

The work of a volt regulator is so unique to help the alternator produce a good current. If the regulator does not function, three things could happen to the battery. Those three things include undercharging, overcharging, and no charging.

Furthermore, if the regulator functions appropriately, it would regulate the battery volt and conserve its level of charge. It could conserve the charge by modifying the magnetic field stability in the alternator output, which is the windings.

If the battery starts overcharging or reaches the required volts, the regulator would reduce the field stability prohibiting the battery from overcharging. (Read Also:Will A Battery Tender Charge A Low Battery?)

In addition, a lead-acid type of battery can be conserved when it is not overcharging at 13.2 volts. This volt regulator in a vehicle charges and conserves the battery properly.

However, if the battery charging status is boosted, the electrodialysis electrolysis will be wasted away as O2 (oxygen), and H (hydrogen). Plus, contemporary regulators are suited rapidly to the alternator and offer an increased charging current originally to stimulate what is used to start. 

How do I test my battery for overcharging?

I talked about overcharging above, so the next thing is to know how to test your battery for overcharging. You won’t know how it happens until you check for it. However, I would be helping out by listing the steps on how you can test your battery. I would be more informative than I can ever be, so, keep reading. 

Below are the easiest tips regarding how you can test your battery for overcharging. Although before you start with the steps, you would be needing some materials.

 These materials include:

After getting these materials, you can proceed. 

Step 1

Make use of a voltmeter

You would need a voltmeter to check the volt of your battery. This voltmeter can be utilized to test the volts of a battery when the car is working. However, a completely charged vehicle battery would settle at 12.5 volts when it is stagnant, 2.0 volts per 6 inner compartments.

 If you start the cat without the opening of weights like the dashboard lights, or the radio, the volts would increase to a standard volt of 13 volts. After connecting the voltmeter to your battery, if it reads 15 volts, then, it is indicated as overcharging. (Read Also:Should The Alternator Get Hot?)

Step 2

Search for a crushed alternator

You can check if a battery is overcharging by using a crushed alternator. Typically, an alternator assists the battery to collect the appropriate amount of power whilst your car is operating. This duty can be acquired by producing electricity and delivering the electricity directly to the battery. 

In addition, when an alternator crushes, the plates in the battery would alleviate their defensive membrane as a result of heat. This can Jeopardize the all-around hierarchy of a car battery. Plus, it could also utilize its capability to charge appropriately when it is demanded. 

Step 3

Test the battery charger if it is faulty

One reason why a truck battery can overcharge is due to a bad battery charger. So, it is important to check your battery charger properly.

However, the overcharging can be due to a wrong wiring connection in the battery charger, or a mix-indicated charge. This issue is usually observed in shutdown battery chargers. 

This could result in the battery charger delivering an incorrect quantity of charge to the battery. So, I would recommend you purchase exotic and unused battery chargers to charge your vehicle’s battery. 

Step 4

Regulate your battery temperature

Regulating your battery temperature could help your car battery. If your abode is located in an incredibly hot environment, the sun could harm your truck battery if you park your car out in the sun for a long period. However, the heat could worsen the effect that an overcharging car battery could induce, so it is very reasonable if you prevent heat from your car in the process

You can do this by parking your car below a shade like in a garage during the hot season. During the heated season of the year, ensure your truck is very and carefully conserved during this period. 

Can A Bad Ground Cause An Alternator To Overcharge – Conclusion

Can a bad ground cause an alternator to overcharge? A bad ground could cause an alternator to overcharge because the connection of the ground wire determines the well-being of other car components. A low charging system of a battery is caused by bad ground, so you have to ensure it is in a good state. This is because a bad ground wire could stop you from utilizing your car. 

However, I have listed ways you can test your battery if it is overcharging. Also, ensure you purchase the recommended products. If you have more questions regarding the alternator, kindly feel free to ask in the comment section below. 

Leave a Reply