Hello guys, Ride a Piaggio Zip Ssl25 Bj 1994 and have been having a problem since just, because I had throttled the scooter a few days ago and charged the battery today.When this was charging I turned a round and suddenly came a loud screaming of course I immediately turned off the engine and then kicked it back to the same came another 2 times before afterwards it was okay again. When I had the battery in it and the scooter was cold came screaming and squeaking again, Then I pushed him home because it was too weird for me. Ask for quick answers is totally desperate ;'(Thank you guys)