Tips & Tricks

How to Charge Your Car Battery With Home Electricity – The Ultimate Guide

A short daily commute doesn’t provide enough time for your car battery to naturally charge while you’re driving. This can quickly drain your car battery. Without a public charging station nearby, you could soon find yourself in trouble.

But did you know you can charge your car battery using home electricity? In this blog post, we will discuss how to do it. Charging your car battery using home electricity is a simple process, and it takes a few minutes. Let’s get started.

If you’re like most people, you rely on your car to get you from point A to point B. But what happens when your car battery dies and you’re stuck without a way to charge it? 

Luckily, there are a few ways you can charge your car battery with home electricity. With a little bit of know-how, you can get your car up and running in no time.

Just to clear things up before we get started, in this blog post we will be talking about the regular car battery that every car has, not the ones used to power an electric vehicle.

Table of Contents

How Charge Car Battery With Home Electricity: The Easiest Way

Start by plugging the extension cord into the power outlet. Then, plug the car battery charger into the extension cord. Finally, attach the car battery charger to your car battery. Once everything is plugged in, turn on the power switch on the car battery charger. The charging process will begin automatically, and it should only take a few minutes for the car battery to fully charge.

However, there is much more you need to know before you try and charge your car battery at home.

Types of Car Battery Chargers

If your car battery is dead, you can use a charger to get it up and running again. But which kind should you buy?

The first thing you should know is that multiple types of chargers are available on the market.

There are two main types of car battery chargers: trickle chargers and standard chargers. Trickle chargers are the slower of the two, but they’re also much cheaper and easy to use.

Standard chargers are faster, but they’re also more expensive and can be tricky to use. If you’re not sure which one to get, ask a salesperson or another car owner for advice.

Once you’ve got your charger, hook it up to your car’s battery according to the instructions in the user manual. Then plug the charger into an outlet and let it do its job.

Most car batteries will take a few hours to charge, so be patient. Once the charger says the battery is full, unplug it and put everything away. Then you can hit the road again.

The Trickle Charger

using charger to charge battery

A trickle charger is the simplest type of car battery charger. It plugs into an outlet and delivers a slow, steady stream of power to the battery. It is great for at-home charging.

Trickle chargers are great for long-term storage because they can be left plugged in indefinitely without harming the battery. They’re also very inexpensive, making them a good choice for budget-conscious shoppers. An average price for a trickle charger is about $20, which is quite reasonable.

The main downside of trickle chargers is that they charge slowly. It can take several hours to charge a dead battery with a trickle charger. That’s why they’re not ideal for emergency situations.

If you need a quick boost, you’ll be better off with a standard charger. But if you want an inexpensive way to keep your vehicle battery topped off, a trickle charger is a good choice.

The Standard Charger

A standard modern car battery charger is the best way to get a quick, powerful charge. It delivers a high current of electricity to the battery, which can bring it back to life in just a few minutes.

Standard chargers are more expensive than trickle chargers, but they’re worth the extra money if you need a fast charge. Just be careful not to overdo it. If you leave a standard charger plugged in for too long, it can damage the battery.

The price of a standard charger can vary depending on its features. Some models come with built-in timers that shut off the charger automatically when the battery is full. Others have LCD screens that show you the charging status and battery voltage. A typical purchase price for a standard modern charger is about $30 up to $100.

The most important thing to look for in a standard charger is safety. Make sure the model you choose has an automatic shut-off feature to prevent overcharging. Also, look for a charger with reverse polarity protection. This will keep the charger from damaging your car’s electrical system if you accidentally hook it up backwards.

Which One Should You Buy?

Now that you know the difference between trickle chargers and standard chargers, you can decide which one is right for you. If you only need to charge your car’s battery occasionally, a trickle charger will work.

But if you’re looking for a quicker, more powerful charge, you’ll need a modern battery charger. Just be sure to choose a safe model with an automatic shut-off feature.

Whichever type of charger you choose, be sure to follow the instructions carefully. And always unplug the charger when the battery is full to avoid damaging it.

Now that you know all about car battery chargers, you can choose the right one for your needs. Be sure to ask a salesperson or another car owner for advice if you’re not sure which one to get. And always unplug the charger when the battery is full to avoid damaging it.

A House Inverter

A standard car battery typically has a voltage of 12 volts. This means that it can provide a current of up to 12 amps for a short period of time, or 1 amp for 12 hours.

If you have a car with a 12V lead-acid battery, you can use household inverters to charge it. This can be handy if your car battery dies and you need to charge it quickly.

To do this, simply connect the positive (red) lead of the inverter to the battery’s positive terminal and the negative (black) lead to the battery’s negative terminal. Then, plug the inverter into a house outlet and flip the switch to “on.” The inverter will then convert household AC into DC, which will charge your car battery.

Just be sure to unplug the inverter and disconnect the leads from the battery when you’re finished charging because leaving it connected for too long can damage the battery. Also, be sure not to overload the inverter – most home inverters are only rated for around 100 watts, so if your car battery is stronger than that, you’ll need a heavier-duty inverter. But for most small and medium-sized batteries, a home inverter will do the trick just fine.

Step by Step: How to Charge Your Car Battery With Home Electricity

Step 1: Make sure you and the surrounding you work in are safe. 

Work in a well-ventilated area, and if you can, wear appropriate safety gear such as safety gloves and safety goggles. Gloves and glasses might not protect you from getting shocked (if you do not have special electricity-repellant gloves), but the safety glasses will protect your eyes from debris while cleaning the battery terminals and the gloves will help you not get minor scratches while working with the battery. You also want to make sure that a power outlet is nearby and that there are no flammable substances in your immediate area.

Step 2: Find out what battery type you have.

There are two types of batteries in cars: lead-acid and lithium-ion. Each type has its own specific charging process that you must follow to avoid damaging the battery.

Step 3: Pick an appropriate charger for your car battery that will work with your at-home electricity. 

Be sure not to overload the circuit by plugging in too many devices. It’s also important to monitor the charging process and stop if the battery starts to overheat. The battery temperature cannot get too high.

Step 4: Disconnect the battery and take it out.  

Cautiously remove the battery from your car. You’ll want to avoid any sparks or accidental contact with the battery acid.

Step 5: Carefully clean the battery terminals.

Use a wire brush or a toothbrush to remove any dirt, grease, or corrosion from the battery terminals. This will help ensure that the charging process is as efficient as possible. You might also have to clean the battery surface from the debris your car might have accumulated. Do not clean the battery surface with a wet cloth for obvious reasons. 

Step 6: Place the charger on an even and dry surface. 

Be sure that the charger is not able to fall over or slide off the surface. As you probably have learned by now, water and electricity do not mix well together.

Step 7: Connect the charger to the battery. 

Connect the positive (red wire) cable to the positive port of the battery. Make sure that the clamp on the cable is tight so that it doesn’t come loose while you’re working.

Connect the negative (black wire) cable to the negative port of the battery. Again, make sure the clamp is tight.

Step 8: Set up the charger so it charges based on your preferences. 

Some people like to charge their car batteries overnight (which is not the smartest idea), while others do it for a few hours during the day. It all depends on your schedule and how much time you want to dedicate to the process.

Step 9: Keep an eye on the charging process.  

You’ll want to make sure that the charger is working properly and that the battery isn’t overheating.

Step 10: Disconnect the cables once the charging is complete.

First, disconnect the negative cable (black cable), and then the positive cable (red cable). Make sure that the clamps are loose enough so that you can easily remove them from the terminals.

Step 11: Reconnect the battery to the car. 

Be careful when you handle the battery, as Sparks from loose connections can cause explosions in rare cases.

Step 12: Check if the battery is charged. 

You can do that by using a voltmeter. If the reading is 12.6 volts or higher, the battery is charged. If it’s lower, charge it for a bit longer.

Charging your car battery at home is a relatively simple process. Still, it’s important to be careful and follow the steps correctly to avoid damaging your battery or causing injury to yourself. With a little bit of care and attention, you can get your battery charged up and back on the road in no time.

Why Did My Car Battery Die?

checking car dead car battery

You might wonder why your car battery died in the first place.

There can be a few different reasons why this may have happened. Some of the most common ones are:

1. You left your headlights on.

This is probably the most common reason why car batteries die. If you leave your headlights on for too long, they will eventually drain the battery. So if you’re ever in doubt, just turn your headlights off when you’re not using them.

2. You didn’t drive your car for a while.

If you don’t drive your car often, the battery will slowly lose its charge over time. This is because the battery needs to be used in order to stay charged.

3. You have a bad battery.

Sometimes, batteries just die for no apparent reason. If this happens, you’ll need to get a new battery.

4. You have a bad alternator.

If your alternator is not working properly, it can drain your battery. This is because the alternator is what charges the battery while the car is running. If it’s not working properly, the battery will eventually die.

5. You have an electrical problem.

If there is an electrical problem with your car, it can cause the battery to die. This could be something as simple as a loose wire or a bad connection. If you think you might have an electrical problem, it’s best to take your car to a mechanic and have it checked out.

These are just some of the most common reasons why car batteries die. If you’re ever unsure, it’s always best to consult a mechanic. They’ll be able to help you figure out what’s going on and get your car back up and running in no time.


1. Is charging your car battery at home safe?

Yes, charging your car battery at home is safe as long as you follow the proper instructions and take the necessary precautions. Make sure to read the manufacturer’s instructions carefully before attempting to charge your battery, and never leave the charger unattended while the battery is charging. Consult a qualified automotive technician for assistance if you have any questions or concerns. 

2. How much is the cost of electricity when charging my car battery at home?

The cost of charging your car battery at home will depend on the type of charger you use, the electricity costs in your area (cents per KWh), and how often you need to charge your battery. It will also depend on the time of day when you charge your car battery since energy costs are usually cheaper during the night. 

If you have a standard 120-volt outlet, you can use a trickle charger to slowly charge your battery over several hours. As we said earlier, a typical trickle charger will cost between $20 and $50.

If you have a 240-volt outlet, you can use a faster charger to charge your battery in a few hours. A typical fast charger will cost between $100 and $200.

The price of electricity varies widely by region, so it’s difficult to estimate the exact cost of charging your car battery at home. However, we can use some rough estimates to get a general idea of the cost.

Assuming that you’re paying $0.10 per kilowatt-hour of electricity, it would cost about $2 to charge a standard car battery with a trickle charger and about $10 to charge a standard car battery with a fast charger. Of course, these are just estimates, and your actual costs may be higher or lower depending on the factors we mentioned earlier.

3. How long does it take to charge my car battery at home?

It depends on the type of charger you are using and the condition of your battery. If you are using a standard charger, it will take about 8 hours to charge a completely dead battery. If you are using a fast charger, it will take about 2-4 hours to charge a completely dead battery. If your battery is only partially drained, it will take less time to charge it.

4. Why isn’t my car battery charging?

There are a few reasons why your car battery might not be charging. The most common reason is that the battery itself is damaged or has gone bad. If this is the case, you’ll need to replace the battery.

Another possibility is that there’s an issue with the alternator. The alternator is what actually charges the battery, so if it’s not working properly, the battery won’t charge. This can often be diagnosed by taking the car to a mechanic and having them test the alternator.

It’s also possible that there’s a problem with the electrical system in your car. This could be anything from a loose connection to a blown fuse. If you suspect this is the case, you should take your car to a mechanic or an auto electrician to have them check it out.

5. Do car batteries have a warranty?

Most car batteries come with a warranty from the manufacturer. However, the length of the warranty varies depending on the brand and type of battery. Some batteries may only have a one-year warranty, while others may have a longer warranty of up to five years. It is important to read the fine print on your warranty to see what is covered and for how long.

6. What should I do if my car battery leaks?

If you notice that your car battery is leaking, it is important to take action immediately. First, turn off the engine and remove the key from the ignition. Next, disconnect the negative (-) terminal of the battery. This will help prevent any further damage to your car’s electrical system. Once the negative terminal is disconnected, you can safely clean up the leak with a rag or towel. Be sure to dispose of the cleaning materials properly.

If your battery continues to leak after you have cleaned it up, you will need to replace it. You can do this yourself or take it to a qualified mechanic or auto electrician.

7. What are some signs that my car battery is bad?

There are several signs that your car battery may be failing. If your car starts slowly or if the engine cranks slowly, this may be a sign that your battery is losing its power. Another sign of a failing battery is dim headlights. If your headlights are dimming or flickering, it may be time to replace your battery. Finally, if your car frequently needs a jump start, this is also an indication that your battery is not working properly.

If you notice any of these signs, it is important to have your car battery checked by a qualified mechanic or auto electrician. They will be able to tell you for sure if your battery needs to be replaced.

8. Why does my car battery keep leaking?

Car batteries can leak for a variety of reasons. The most common reason is overcharging. When a battery is overcharged, the electrolyte (the liquid in the battery) can boil and produce hydrogen gas. This gas can escape from the battery and cause the battery to leak.

Another reason for leaking batteries is damaged cells. If a cell is damaged, it can allow electrolytes to leak out of the battery. Sometimes, batteries will also develop dead cells. Dead cells are cells that no longer produce electricity. These cells can cause the rest of the battery to work harder, which can lead to leaks or other problems.

Try Charging Your Car Battery at Home

Charging your car battery using home electricity is a quick and easy process that anyone can do. Give it a try the next time your car battery needs a charge. You’ll be glad you did.