We don't have a specific timeline regarding the longevity of batteries in Light-Up shoes.
We expect your child will grow out of their shoes before the batteries wear out! However, each case can be a little different, so feel free to reach out to our Skechers Experts if you're worried.
Have you checked the lights are on? Sometimes the button that operates the lights can be accidentally turned off. You'll find the button around the heel or sides of the shoe. Press it and test the shoes again.