Yes, it's a starter generator. After the start is complete, generator turned on by switch, and charging current checked. I have checked that prior to takeoff, and it was fine.
The first thing I asked the maintenance guy to do was remove the start relay to starter cable, and my friend tried the starter. The voltmeter on the relay output suggested it was working correctly (and I could hear it clicking with the starter button). When I left, they were beginning to look at the reverse current relay, I have not heard the outcome....