These solar-powered Mason jar lights are a great way to add ambiance to my back patio! They come with 30 mini LED lights, which is plenty to add a nice glow to the area. They also come with solar lids, so I don?t have to worry about batteries. These lights are really easy to set up, too. Just put the lights in the jars, attach the solar lids, and turn them on. The solar panel will charge the batteries during the day, and the lights will automatically turn on at night. The lights shine for 8-10 hours at night after charging for 6-8 hours during the day.