Modern Vespa

Is it possible to add a kick starter to a Fly 150? On a couple of occasions I have accidentally left the headlight on and awoken to a dead battery. As there is no kick starter and an automatic transmission plus the brake lever must be engaged to start the engine a push start is not possible.

TIA,
mdh

Don't think so, but you sound like the perfect candidate for the Battery Tender, Jr.

How do you manage to leave the headlight on, without leaving the key turned on?

Since the Fly uses a LEADER 150 engine, you could presumably install the side case and kickstart lever from an LX 150; keep your eyes open for a wreck. But, from what I understand, the first time you use the kickstart, you're likely to crack the case; so, don't throw your old one away.