How to Convert Power Wheels to Lawn Mower Battery?




Convert Power Wheels to Lawn Mower Battery

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It would help if you had a lawnmower battery, wires, a crimper, connectors, and a screwdriver. The voltage of the lawnmower should be the same as that of your Power Wheels. If you opt for a bigger battery, it should be 6V higher than the toy car voltage at most.

Did you know that you can successfully replace the Power Wheels battery with your lawnmower battery? It doesn’t take a lot of technical know-how to convert power wheels to lawn mower batteries. 

A lawnmower battery is an excellent option for parents who are unwilling to pay premium prices for a replacement battery. Also, lawn mower batteries tend to last longer whenever you install them in Power Wheels for kids. 

You can find all the steps you need to install a lawnmower battery into your little one’s power wheels. If you don’t have a lawnmower battery this also works with a tractor battery as well.

You have to avoid a few pitfalls to have a working toy vehicle after converting power wheels to a lawnmower battery. 

Extra or replacement Power Wheels batteries
If you are looking for an extra battery or need a replacement battery or charger this will help.

Installing a Lawn Mower Battery into Power Wheels

There are a few things you need to know beforehand when you choose to install a lawnmower battery into Power Wheels into your little one’s ride. Understanding the tools that you need for the conversion will make the transformation easier for you. 

Ideally, you need to collect all the resources you need before you start the process. Here are some of the things you need to keep in mind for converting power wheels to the lawnmower battery DIY project. 

12V 18 AH
Mighty Max Battery ML18-12 - 12V 18AH New Battery for...
12V 35AH
Chrome Battery 12V 35AH SLA Rechargeable Replacement Battery...
Mighty Max Battery ML18-12 – 12V 18AH New Battery for…
Chrome Battery 12V 35AH SLA Rechargeable Replacement Battery…
12V 18 AH
Mighty Max Battery ML18-12 - 12V 18AH New Battery for...
Mighty Max Battery ML18-12 – 12V 18AH New Battery for…
12V 35AH
Chrome Battery 12V 35AH SLA Rechargeable Replacement Battery...
Chrome Battery 12V 35AH SLA Rechargeable Replacement Battery…

Deep Cycle Lawn Mower Battery

You can’t use any lawn mower battery on Power Wheels because some cannot handle the toy cars’ demand. It would be best if you had a deep cycle lawn mower battery that can withstand being charged repeatedly during the lifespan of the toy. 

A deep cycle lawn mower can be recharged hundreds of times before it goes bad. Additionally, it can discharge 20-50 percent of its energy to fuel Power Wheels on various terrains.

A deep cycle lawn mower battery is a close fit to the deep cycle battery for power wheels from the manufacturer. 


You need to ensure that the lawnmower battery’s voltage is the same as that of the Power Wheels. Meaning, a 12V lawn mower battery should go to the 12V Power Wheels toy cars for kids. 

Likewise, a 6V lawn mower battery is compatible with 6V power wheels. It is a different process to upgrade a power wheels battery from 6V to 12V. 

The voltage of a battery is essential because the wiring and motor for Power Wheels depend on it. A higher voltage than intended for the toy cars can lead to malfunction because it isn’t equipped for that much power. 

If you feel the vehicle could use more power you can also do a motor upgrade on Power Wheels.

Battery Size

Sometimes you will find that a lawnmower battery can fit into space where the power wheels battery goes in place. However, most of the time, parents have to make adjustments to the space to accommodate a lawnmower battery. 

You need to take the battery’s measurements in the car and the lawnmower battery to know how much space you need. 

You can use a power saw to cut through the battery and create more space in the vehicle’s hood. The goal is to ensure that the hood locks appropriately once the new battery is in place.

You can find a battery box for the new battery after making the necessary adjustments. 


A lawnmower battery isn’t connected the same way as Power Wheels batteries. Most Power Wheels use connectors to attach the battery to the wiring system.

You will need connectors or crocodile clips to hook up the battery terminals to the toy vehicle. 

You can find connectors and crocodile clips at the local store. Just make sure that you get the right wiring size that can carry the current without burning out.

Power Wheels 12 Volt Battery Conversion

You will need a power saw, a screwdriver, wire strippers, and some pliers to convert power wheels to a lawnmower battery. 

Ensure that you do the conversion in a location that has ample space for moving around the car. The batteries in most Power Wheels are at the front, but some are back.

So the following steps for the conversion process. 

  • Pop up the hood of the car and remove the battery of the toy vehicle. Store the battery for appropriate disposal at a later time. 
  • Take the battery container of the lawnmower battery and outline the hood to create adequate space for it. Most lawnmower batteries are usually larger than those of Power Wheels ride-on kid’s cars. 
  • Cut out more space in the battery area using the power saw. Take time to fit the battery to see whether it has adequate room and the hood can close correctly. Make the small segments’ adjustments to avoid creating an extra-large space that can hold the battery in place. 
  • Once the battery can fit it properly, it’s time to connect the battery to the car’s system. Mark the negative and positive wires in a manner that is easy to identify. Cut out the plug on the Power Wheels and dispose of it.
  • You have to strip about two inches of insulation off the positive and negative terminal to hook them up to the connectors. Ensure the battery’s positive terminal is connected to the positive wire and vice versa for the negative terminal. 

Once you are done with the conversion, it is time to test the vehicle and see how the new battery performs. Have one of your kids take the toy vehicle for a spin around the yard or the neighborhood. 

Ensure that they try it out on different landscapes like slopes, hills, grass, gravel, rough roads, and tarmac. It will work seamlessly and have enough power to go over all the landscapes above.

Frequently Asked Questions


Replacing Power Wheels batteries with deep cycle lawn mower batteries is straightforward and easy for any parent. Many videos on YouTube can give you a visual guide for what you need to do.

All the supplies you need for the replacement are locally available, and you can also buy them from Amazon. 

It will take less than an hour for parents who are handy with Power Wheels for the conversion. You can do it one weekend afternoon and give your child a better-performing toy car for their outdoor fun. 

Ensure that you test the vehicle rigorously to ensure that it works as it should before you put your tools down and make sure to store the battery correctly when not using it for long periods of time.

If instead of doing a lawn mower battery replacement and you do a 24V battery conversion you can do some really cool things, not only will the Power Wheels perform better but it can even have a trailer added to it to help with the yard work!

Convert Power Wheels to Lawn Mower Battery

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