Decorative Solar Lights/ If I had decorative solar lights for my garden and they die out, are new rechargable batteries the only thing I need to purchase?/ Outside Decorative Solar Lights at Great Prices

If I had decorative solar lights for my garden and they die out, are new rechargable batteries the only thing I need to purchase?

Or do the solar lights themselves “die”?

Have you had to replace just the battery or have you had to throw away the whole solar light?