How To Charge Car Battery With Home Electricity – Complete Guide

The car battery plays a vital role in its operation. Moreover, it is an important component of allowing cars to run properly. Therefore, it’s essential that we pay close attention to it. In order to take care of it properly, we need to understand how we can charge it. People often ask how they can charge their cars with home Electricity. The following are two methods for charging a car battery with electric power at home.

Using a Home Inverter to charge the car Battery

The car battery will be charged more quickly if you use your home inverter rather than a charger. It’s not a good idea to use this method regularly, but it’s a simple and effective method to use once in a while.

Establishing a connection:

Establishing a connection is the same as setting up a car charger. First ensure all your connections are complete by connecting the inverter before putting the power supply in. A black wire from the inverter’s output port should be connected to the ground or negative port of the battery. Positive wires must be connected to the red port of the output’s positive port.

Providing the Power supply:

Home inverters use the direct power from the power outlets of your house. Check the connections again before you turn the power supply on. If the connections are alright, plug the inverter into the power outlet. A wrong connection of the wires may trigger the explosion of the battery.

Charge the Battery:

High-quality home inverters supply high amounts of power. Depending on the model and the voltage, it can take as little as 1.5 hours for the inverter to fully charge the battery. There may be cases where it takes up to 3 hours. It is a quick and easy method for charging your car Battery. In terms of inverters, the inverter method would be ideal if you do not have a lot of time to wait overnight for a ride.

Charging a car battery with a Charger

The most efficient method of charging a car battery is to use a proper charger with electricity. The use of a home inverter is acceptable for charging car batteries. A car battery can be charged with a proper charger in the following ways:

Establish a comfortable atmosphere:

The first step is to prepare yourself. If you are going to use nonelectric gloves and face protection, you will need to prepare yourself. In order to avoid unneeded accidents, keep flammable objects and water away from you. The next step is to prepare the charging process.

Remove the battery:

After preparing the surroundings, you will need to take out the battery from the car. After you have recalled and removed the battery, all that needs to be done is to reboot the device. In order to check your wiring, you must first remove the black wire that is the negative terminal. Then, remove the red wire which is the positive terminal.

Cleaning the Battery:

It’s important to clean the debris from your battery. The process of cleaning can be accomplished by wiping the battery’s surface using a wet towel dabbed with baking soda.

Plug the charger into the battery:

Just like before, you can charge the battery by connecting the negative part first, then the positive part. Connectors are most often used to connect components. It is still possible for a fire to occur, so ensure you are wearing non-electric gloves during the process. Additionally, this must be done while the charger is not connected to a power source. After the parts are connected properly and the power outlet has been checked, Charge the battery.

Recharge the battery:

Most chargers will let you know when the battery is charged, so you don’t have to worry when the battery is charging. Depending on the capacity of the battery, charging would take between 6 to 12 hours. Many people would charge for at least 12 hours at a time. As the charging process takes a long time, you should charge the battery at night, since you can leave it charged overnight. The battery is already charged when you wake up, so you don’t have to worry about it.

A few Safety tips:

  1. In the first place, safety always comes first, and you should wear safety goggles and gloves that repel electricity.
  2. Ensure that you are completely dry and your feet and hands are clean before you stand on a wet surface.
  3. There is a possibility that an improper connection of the wires may cause the battery to explode.

People Might ask

Does a power supply charge batteries?

DC power supplies can be used to recharge batteries. The only requirement for charging battery cells is DC current. The DC current restores the voltage a battery was meant to have when fully charged by allowing electrons to flow back into the battery.

Is it safe to leave a car battery charger on overnight?

Using a high quality charger does not increase the risk of overcharging, but the battery should not stay connected to the charger for more than 24 hours. The battery can usually be fully charged by charging it overnight.

Can a dead battery still start my car?

Having a manual transmission makes it easier for vehicles to be jump started without cables. But an automatic car can only be started using a portable battery charger with a dead battery. Make sure that your roadside emergency toolkit includes a portable charger if you drive an automatic vehicle.


Battery performance and service life are directly affected by the method of charging. We have discussed two ways of how to charge a car battery at home in full detail, with step by step instructions. Using an inverter is the easiest way to charge the battery, but most people use a proper charger instead. Make sure the generator and drive belt are kept in good working condition and follow the charging rules. Also, you should charge a battery every six months with small currents of 1-2 amps as a preventative measure.


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