The included solar rechargeable battery charges best in direct sunlight and illuminates for up to 8 hours each night. These string lights are the perfect solution to turn your backyard or patio into an oasis. Drape these LED lights in trees, along fence lines, around your deck, and more. Mounting hardware and the ground stake come included with this set of solar string lights and the bulbs are resistant to most weather conditions. Please note: The charging time and the lighting time of the solar light vary with sunlight intensity, geographical location, weather conditions, seasons and other conditions. If you choose to install the solar panel using the ground stake, please wet the ground before installation.