This light works very well, once you learn how to set it up.It charges when light activates the charging circuit and at night works by one of three settings.I set it to glow with a dim, but useful light output constantly at night, but turn bright (very bright!) when it detects motion.The bright level lasts for about 20 seconds, and returns to dim, if there's no movement nearby.Good so far (about 3 weeks) and I hope they lase.Plenty of light now, but I do not know if the short Winter days will provide enough solar energy to charge it fully.We will see...