Solar Barricade Lights Batteries
Believe it or not, you can replace the batteries in solar barricade lights. I know that doesn’t make any sense, because solar things are supposed to not require batteries.
The way it works is that the solar panels are designed to charge an internal battery which then holds the charge for a certain amount of time. After 3+ years the battery dies, and on some models you can get new batteries by contacting the manufacturer.