I've got a dead battery in my new (to me) P200; my first Vespa with a battery. It's a new battery, and the scooter has no obvious issues. Before I go through my regular steps I've used with old cars to diagnose this, I had a silly first question:
I've had the cowls off for a couple weeks to work on the suspension and tires...since those ground the turn signals could that be the issue? Even dumber, I tend to leave the key in it (off position of course).