I bought my first ones in July '17. So far there are no problems. I'm converting a t12 to a t8 and getting rid of two ballasts per light. I had to replace one of these ballasts. It was one of the second batch of ballast. The ballast did not light any of the 4 t8s in the fixture. I checked the voltage on the ballast 120V. I installed a new ballast and all four lights came on. I think I should date some of the people I recently added. I'll get back to you later with news.
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