Regulator Rectifier Q&A! Q: What is the biggest killer of charging systems? A: failing connectors between the stator and R/R create contact resistance which puts excessive load on the system. Also insufficient airflow over the R/R body. Q: Are Series and mosfet R/R’s good for lithium ion type batteries? A: Yes! Especially the SH***BB version with its lower (14.3v) target DCV. Q: Can modern R/R’s work on single phase charging systems too? A: Yep, just wire the two stator wires to two of the 3 R/R