Just got and installed these so cannot comment about longevity of the lights. I will tell you that they are more of a glow light than a bright light which was OK for my installation where I just wanted a little light on steps. The only thing I will warn you about is that the adapters for my 3 x 3 post had to be glued on to the bottom of the lights! Yes, glued! Overall I would say that if these lights were $15-$20 they would be rated higher but for $30/ea they are way over priced. Oh, and one came without a battery.
Rating: [2 of 5 Stars!]