We bought 40 LEDs (4x10er Pack) and since November in use. Now, after just over 5 months have been broken 11 LEDs. With an average life of 20,000 hours (which in continuous use means a service life of over 27 months) is incomprehensible to me. The lights were out during the day always, so in normal use. We had bought us, among other things for LEDs due to the cost savings. Nope ...