Each solar disk light typically illuminates for 8-10 hours after 4-6 hours of charging. Super easy to use and compact for storing! I love these solar lights not too bright just enough light to line my path way up to and around my trailer. I have had some very close calls tripping over something at night heading back to my campsite. Adding the perfect amount of light for a pathway. They are flush to the ground and easy to install. Simply turn on the switch!