What to do with solar pathway lights as they age to keep the. Working?

The lights come with small batteries, you can get at a hardware store. Call first to see if they have them. Make sure the lights are getting enough strong rays.

Most likely the batteries are dead

You could try replacing the batteries with new rechargeable nickle cadmium batteries

Also make sure the battery contacts are clean and fit the battery snuggly. I have lots of these and every couple of years I order replacement batteries for all of them.

Open the back and see what kind of solar recharable batteries it takes. I replaced my fence solar lites batteries and it was easy.

Thank you. I will look for that batter.