I bought a set of Hampton Bay Solar lights from Home Depot, model 79778 and they only work intermittantly, sometimes not at all. Oddly enough, If I cover the sensor and the solar panel inside in a pitch dark room, they work great. Outside, in the backyard, they only seem to work once in a while. I have tested the batteries and they all test good, so the recharger circuit is working..there is something defective in the sensor, I suspect. Can't find the receipt and threw out the box. Ironically, the cheap light I bought for $3.97 works great..not Hampton Bay. read full review »