
If you own a car, you’d know that it’s not a simple machine to work on it. Most people would only need to charge the battery once in a while, and that’s why they wouldn’t worry about how to set a car battery without a charger if they are not using one. Even if they do go ahead to use a charger, they would generally use one that came along with the car. However, if you own a hobby car and you don’t have an appropriate charger, you’d need to understand how to charge a car battery without a charger. In this article, we’ll look.
How Can You Charge A Car Battery With A Phone Charger?

It’s perfectly fine to use different things for different purposes. It is the nature of technology to be flexible and multi-purpose. A phone charger makes up to charge cell phones, but it can also set the battery. A standard cell phone charger delivers around 1 amp.Â
So it would help if you hooked multiple phone chargers in parallel to achieve higher amperage. It is easy to do. The easiest way is to use a power strip and join your chargers parallel with the power strip.
Use Your Car’s Alternator To Charge The Battery:
A vehicle’s alternator use typically to charge the battery. The alternator produces alternating current, or AC power, easily converted to direct current or DC energy. The rectifier in the alternator converts the AC power into DC and then sends it to the battery through a wire. The charging voltage for a battery is 14 volts. It can use to charge the battery when the engine is not running. It is because when the engine runs, it produces more power than when it’s off, so it’s not needed to charge the battery.
Charge A Car Battery With Solar Power?Â

It would help if you had a solar panel, a charge controller, and a battery to charge a car battery with solar power. The charge controller deals with the flow of electricity from the solar panel to the battery. The solar panel transfers sunlight energy into DC electricity. Once the battery fully charges, the controller will prevent extra electricity from overcharging the battery. You can set your car electrifying with solar power in two ways: direct charging and trickle charging. Â
Direct charging involves plugging a car battery into a solar panel. However, the storm can damage when overcharged. Therefore, it is better to use trickle charging. The process involves connecting the battery and the solar panel to the controller. The controller charges the battery at a low rate. The battery will then gradually charge itself at night. You should not charge the battery for more than 14 hours for the best results.
Charge A Car Battery With A Home UPS Inverter:Â
Step 1: To charge a car battery with a home UPS inverter, attach the car battery’s positive terminal with the positive terminal of the home UPS inverter through a wire.Â
Step 2: Now, place the car battery’s negative terminal on the negative terminal of the home UPS inverter.Â
Last Step:Â Now switch on the home UPS inverter, and you will observe that the car battery is getting charged. (Make sure that you set the input voltage of the home UPS inverter in such a way that the output is 4 Volts).
How to Charge a Car Battery with Jump Starter?Â

To charge a car battery with a jump starter, you should prepare the following things: jump starter, battery charger; 12V cigarette lighter adapter; 12V car adapter, etc.Â
Step 1:Â First, you should use a jump starter to start the engine. Then, you can move to the second step.Â
Step 2:Â Use a 12V car adapter and cigarette lighter adapter to connect the battery charger to the car battery. Turn on the car and plug the battery charger into the cigarette lighter adapter.Â
Last step:Â You need to keep the car running during the process. The best condition is that you can keep it running for one hour. Remember, the car battery should not charge. If you any confusion about the proper way to set a car battery with a jump starter, please consult a mechanic for help.
How to charge a car battery with Battery Isolator?
You can charge a car battery with Battery Isolator. If you have a battery isolator, you can set your car battery in your car while you are running in your house. First, disconnect the car battery’s negative terminal. Connect the positive brace of the charger to the car battery’s positive terminal. Connect the opposing mount of the charger to the car battery’s negative terminal, which can help run the charger at a medium rate.Â
Do not run the charger too fast, or you will cause your battery to overheat. When charging the car, unplug the charger from your home and return the car battery’s negative terminal in the vehicle. Check to make sure the car’s battery charges.
Frequently Asked QuestionÂ
How Do You Charge A Car Battery Without A Charger?
- Jump-start the car
- Leave it connected to the power outlet
How Do You Manually Charge A Car Battery?Â
- By linkage jumper cables to the car and then to another car that runs.
What’s Your Favorite Way To Charge Your Car Battery?
- Jumpstarting it from a friend’s or neighbor’s battery
- Attaching a manual charger from a portable generator
How Can You Set Up A 12-Volt Battery Without A Power Charger?
- Hook it up to two 9V batteries in series.Â
- Hook it up to two 9V batteries in parallel.Â
Conclusion
The battery is the power source of a vehicle. It is a container of electric energy used to start the engine. And supply power to all the other electrical components in the car. The battery relies on the alternator to recharge. The alternator supplies the current to the battery.
The current isn’t enough to fully recharge the battery in some cases. If you left the car lights on or had the stereo playing for a long time, your battery will drain. What you need to do is charge the battery. You can set it by driving the car. You can also use a battery charger. To assess the storm without a battery charger, you must follow a few steps.

I am an Automotive specialist. I graduated from Michigan with Bachelor in Automotive Engineering and Management. Also, I hold degrees in Electrical and Automation Engineering (BEng), Automatic and Industrial Electronic Engineering, and Automotive Technology. I have worked at General Motors Company for over five years as the Marketing Operations Production Coordinator. Now, I own my garage in Miami, Florida. I love cars and love to share everything about them with my readers. I am the founder of the Automotiveex blog, where I share everything about automotive, like car news, car mechanical issues, and anything else that comes up in my blog posts.