Can I Charge My Car Battery With My Home Inverter

Vehicle problems such as a dead car battery must be among the most common in existence. The reasons for a battery running low are numerous, and so are the methods for recharging it. If you don’t have a battery charger, how do you recharge a car battery? 

 Lots of ways are available to solve this issues. But in this article we will talk about home inverters to charge a car battery. We try to inform car users to solve their problem when they don’t have a car battery charger. 

Can I Charge My Car Battery With My Home Inverter

If you are interested to know the answer to this question. The answer is yes, a home inverter can be used to charge a car battery. It is safe and you need not to be worried about this fact.

The majority of home inverters are rated for 12 volt batteries and include a charging circuit to recharge batteries at 13–14 volts. The same is true for car batteries, which are rated at 12 volts and recharged with 13–14 volt alternators. The capacity of an inverter battery differs from that of a car battery, among other things. On average, a car battery has a capacity of 50Ah, whereas an inverter battery has a capacity of 120Ah.

Here are a few things to consider when charging your car battery with a home inverter:

  1. The UPS (or inverter, depending on your preference) must be turned off before proceeding. Keep the mains supply on, but turn off the UPS since you don’t want to use a car battery that you are charging for power backup.
  1. When it comes to battery terminal extension cords, inverters (at least the ones I’ve seen) are infamous for picking them up. Don’t use an extension cable if you can help it! Instead, use a Connector to attach the polarity-matched Inverter lead to the battery.

How To Charge A Car Battery At Home  Without A Charger 

The safest and most effective way to revive your car battery is with a proper battery charger, which is why you should use one whenever possible.

But if your car battery charger is not working don’t worry. There are numerous ways to charge a car battery without using a charger. Jump leads connected to a donor battery, solar panels, power inverters connected to the mains, another vehicle, or portable jump starters are examples of solutions.

Home Inverter UPS

A home inverter UPS is a good option to charge a car battery. Its possible becuse a UPS inverter may convert DC battery power to AC power. They’re typically set up such that a 12V battery source, such as an inverter battery, can be utilized as a backup power supply in a house or company.

For brief periods of time, such as during a power outage, you can utilize a home inverter battery to power various appliances around the house. A tall tubular inverter battery is the most widely used style of inverter battery. They’re typically found in homes, motor homes, and campgrounds as backup power sources.

UPS inverters can be used to charge an automobile battery when available. Before you begin, make sure the inverter can securely charge a car battery by consulting the user’s manual.

Although most inverters contain safety safeguards to monitor the battery voltage and avoid overcharging and overheating, you should always double-check before you begin charging.

How Can I Charge My Car Battery At Home 

It’s a quick and simple way to charge your phone faster. The inverter approach is an excellent choice if you don’t have the luxury of waiting around for a trip overnight.

Setting up the link:

  1. The connection process is identical to that of the car charger. You should not connect the inverter to the power source before making all the necessary connections. Connect the battery’s negative terminal to the black wire on the inverter’s output port. When connecting an output, connect the positive wire to the red connector on the output’s positive port.
  1. Home inverters are powered directly by the outlets in your house. Before turning on the electricity, double-check all of your connections. Plug the inver into the socket to test the connections.
  1. Inverters for the home have a large power supply. An inverter may charge the battery completely in as little as 1.5 hours. Some may take up to three hours to complete.

Is It Safe To Charge Car Battery At Home?

It is safe to use an inverter to change a battery, however there are some safety considerations to keep in mind before utilizing a car battery:

1. Automobile batteries are big and hefty.

2. Car batteries can generate a large amount of current, and if they are accidentally shorted without sufficient protection, the tremendous current can cause significant damage.

3. Because lead-acid automotive batteries are rarely sealed, there is a risk of acid spilling or escaping.

4. This can be a nuisance when connecting low current load wires to a car battery since standard battery terminals don’t generally allow short wires.

5. In order to determine if the battery’s downtime duty cycle is too high for your application, you must compare the battery’s discharge rate to the charging rate.

6. If the battery capacity is used for an extended period of time, self-discharge loss of overall capacity may occur.

7. Charging lead-acid automobile batteries produces hydrogen gas, which can be hazardous if done indoors or in a small space.

Some Necessary Factors To Charge Car Battery With Home Inverter

  • To avoid having to use a charging car battery for backup power, keep the mains supply on but the inverter off.
  • Make use of a multimeter to measure the voltage of dead batteries. 3. If the SLI battery has six cells, the voltage should be around 11 volts, and even if it only has five, the voltage should be around 10. Below these voltages, the battery needs extra attention.
  • Check the battery voltage and current rating, as well as the Inverter output terminal, before using your inverter. Most SLI batteries require a charging voltage of 12 to 13 volts. It’s important to keep in mind that if your Inverter has a high current rating but a low voltage rating, it will charge slowly.
  • Extension cables for battery terminals are notoriously difficult for inverters to recognize. Instead of using an extension cable, bring the polarity-matched Inverter lead and clip it tightly to the battery with a Connector.


Can I Recharge a Dead Car Battery Using a Home Inverter?

Yes, it is possible. Just keep in mind about the battery power and your home inverter  power capacity. It is a safe process but do not apply it regularly. 

How Do You Know When a Car Battery Is Fully Charged?

When a car battery is fully charged, the voltage should be at least 12.6 volts. When the engine is running, this reading should be between 13.7 and 14.7 volts. If you want to test the battery power, you can turn on the headlights.


To summarize, it’s obvious that a home Inverter can recharge a car battery. Home Inverters, as previously mentioned, use 12V batteries and include a charging circuit that recharges batteries to a voltage of 13–14 Volts.

We hope you found this article to be informative. For additional information, please get in touch with us.

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Hi! I'm Liam Oscar, and this is where I spend most of my time attempting to publish valuable articles for my readers! This site contains all of the information that I believe we all need to know about batteries, chargers, and other accessories.

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