2nd bad stator. Replaced 1st one and went bad in 3 months. 2nd one went bad in two. Accel Stator so it's lifetime warranty but can't figure why it keep going bad?

 

I would only replace a stator with a Cycle Electric. I'd replace the R/R with Cycle Electric as well. Many times a stator can burn up trying to charge a weak battery or in the case of newer Sportsters burn up because of a shunt type R/R with runs the stator at full capacity all the time.