These work fantastic. They come on as soon a something gets in it's range. They are bright and have a wide angle of light.  We use one at the bottom of the steps on our deck that leads to the driveway and one right outside the back door so we don't have to turn the light on and run up the electric bill every time we take the dog out to potty at night. Have never had a problem with them not charging or coming on.  Recommend buying.