I replaced stator (after much effort) because battery was dying during rides. Also replaced battery. I have tested new stator: motor off - 13v at idle- 14v (was 12.6v with old stator) at 3000 rpm - 13.5v (was 12.8v with old stator) Have read that at 3000 RPM that it needs to be above 14 volts. The AC voltage output test on stator is good so I think new stator is OK. I assume I still have a problem that the battery could die on ride? Thinking about ordering a rectifier. Any help much appreciated.