If you remove the batteries from your solarlights during the fall-winter, you will extend the life of your rechargeable battery on your solarlight. Store it for winter in a plastic bag for next spring and summer. Test the batteries that does not work and anymore and dispose of them in proper recycling bin. You will save and the environment. Imagine billions of rechargeable batteries being reuse over and over again! In fact, one of my videos showed that you can use an ordinary alkaline battery can be used as a rechargeable battery for the solarlight.