I'm very disappointed and it took too long for me to watch these fail one-by-one. I bought two sets for our walkway, and out of the box, one completely didn't work. Now only 2-3 months later several are failing. The get plenty of light to recharge during the day, so I don't know why, but boy does it look terrible when an evenly spaced line of lights has even one not working. several are even worse!