Power Wheels – Milwaukee 18 Volt Battery Upgrade!

Tired of your kid’s Power Wheels battery crapping out after 20 minutes?

Angry because you removed that 10 pound brick and charged it overnight, only to have it die again halfway down the block the next day?

I was too, so I removed the stock battery, and installed a pair of Milwaukee 18 volt Red Lithium batteries in its place.

Check out the full project video below. Links to components used in the project, as well as schematics and drawings follow.



Components used in this build:

Prints, Schematics and other Docs:

Mounting Plate Drawing

Mounting Plate

DC Controller Wiring Diagram

Wiring Diagram

Parallel Wiring Overview

Parallel Wiring

Series Wiring Overview

Series Wiring