Just as a quick update I thought I'd mention that I've now disconnected OVMS from my Nissan Leaf in order to ascertain the cause of the 12V battery drain I was seeing for several days over the weekend - to the extent of returning after around 8 hours and being unable to even start the car More complete details are at https://speakev.com/threads/nissan-leaf-12v-battery-totally-dead.19/page-4 I was just about to make a similar comment to the one Kevin just made in that thread - namely that I doubt the ovms processor per se is the cause of the drain since even in a tight spin loop due to a bug I can't imagine it's possible to take that much power? I however wouldn't be surprised if ovms polling the CAR bus might be keeping "things" in the car awake, which then causes the drain. There's also a chance it's just co-incidence. My plan is to reintroduce the OVMS at some point where the car is going to sit idle and not needed (working at home, or when I'm up in London by train) and see if the problem reoccurs. Of course it may be a particular sequence of events that gets the car into a state where it's bus is active.. tricky to pin down. regardless switching over to the EV bus is another option. The leafdd seems stable. Nigel. -- ---- Nigel Jones