Can You Use A 12 Volt Battery On A 6 Volt Power Wheels Car?

  • By: Kevinsmak
  • Date: July 23, 2022
  • Time to read: 6 min.
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Yes, you can use a 12-volt battery on a 6-volt battery. However, you will need to make some adjustments to the wiring system and electronic components such as the converter and motor to get the best results. Note that if a Power Wheels car uses a 6-volt battery, chances are most of the electronic components are rated 6 volts. 

This article will look at how you can modify a 6-volt Power Wheels car so it runs on a 12V battery. Stick with us through the end and get to learn all about it.

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Can you use a 12-Volt Battery on a 6-Volt Power Wheels Car?

Yes, you can use a 12-volt battery on a 6-volt battery. However, you will need to make some adjustments to the wiring system and perhaps the converter to get the best results.

Note that if a Power Wheels car uses a 6-volt battery, chances are most of the electronic components are rated 6 volts. This means that using a 12-volt battery can cause damage to the wiring system and other components.

For instance, you burn out the converter, the motor, or any other part of the car that directly uses the power output from the battery.

Also, the safety of your kid may be a concern. A 6-volt power wheels car does not have as much power as a 12-volt one. So modifying to 12 volts may not be the best idea after all.

It is going to be more powerful, and the speed will increase. This is something you should consider before you do it.

Make sure your kid is ready for this before modifying the battery power system of a car.

How to Convert a 6-Volt Power Wheels to a 12-Volt Factors to consider

The motor rating

You don’t want to connect a 12-volt battery directly to a 6-volt motor. You will need to get a motor that is rated at 12 volts. Plus, you will need to change the car’s wiring so that it uses a 12-volt current.

Is there a DC-DC converter?

The converter is the device that manages the current between the motor and the battery. Most Power Wheels cars have the motor connected to the battery through a DC-DC converter.

Some Power Wheels don’t come with a converter. 

So check to see if there is one in your car. If it’s missing, you will need to buy a DC-DC converter too.

Check with your local auto parts store if they have these components for sale, so you don’t have to buy them online. 

You don’t want to connect the 6-volt motor directly to the 12-volt battery because chances are you will burn out the motor. Some 6V converters work just fine with a 12-volt battery.

Some don’t. You may want to take your chances here or just buy a new 12-volt converter.

Size of the battery

This may not sound significant, but you also have to consider the size and weight of the battery. Remember it is going to be bigger, (unless it’s a drill battery conversion) so you may want to modify the battery compartment on the ride-on car, so it fits properly.

How much speed and power do you want?

Using a 12-volt battery on a 6-volt toy will most likely double its power and top speed. So is this something you would like to have?

Does your kid need this, or is it just a toy that they play with on occasion? Is the car used only indoors, outdoors, both?

There is also an option of adding a second 6V battery so your car can run in parallel. This is nice but it will take up even more room as you will have to have 2 batteries (picture below).

These are all factors you should consider before deciding to convert from a 6-volt battery to a 12-volt one.

How to Wire 2 Batteries for Power Wheels

Remember they need to be the same voltage and have room for it. You will also need an extra wire which you can also find from the link above.

Tips on Converting a Power Wheels Car from 6V to 12V

Change the motor

If the toy has a 6V motor, get a new 12V motor from your local electronics store or online. Also, check the wiring system. This is especially the case if there is no converter in the system.

Replace or add a converter

If your electric car doesn’t have a DC-DC converter, you will need one from an electronics store in your area or online. However, if there is already one in the system, check to see if it is 12V. If not, you will need a new one.

Getting a new converter is the most recommended option as it will have a higher current capacity for powering the 12V motor. Some DC-DC converters can work with voltages up to 28V.

As noted earlier, though, some 6-volt DC-DC converters work just fine with 12-volt batteries. So if you don’t care much about the converter and the entire unit, you might just go ahead and use the converter and see if it works.

Read the Power Wheels specifications.

You may have some other components in the Power Wheels that won’t withstand the power of a 12-volt battery. You may need to replace some parts or upgrade them with stronger materials.

6 Volt to 12 Volt Power Wheels FAQs


You can use a 12-volt battery in a 6-volt Power Wheels car, but care must be taken to avoid any damage to the car and make sure that everything is compatible. The main things to consider are the motor and converter voltage ratings as well as the wiring system.

If you want a more in-depth guide of everything you can do to upgrade your Power Wheels, please check our guide on how to upgrade Power Wheels here!

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