I also had this problem with my old J1
It wouldn't turn on and it was consuming electricity, so I could replace it with a battery
Later, I ran to the dealer's technician and immediately started it. The root cause of the disease was found.
It turned out that the coil was broken. I replaced it with another coil, gave the carburetor an IV, and washed it out. with gasoline
It returned to normal immediately and the power was not delayed