SMC 250cmm, doesn’t start anymore???

Hello! Drive an SMC 250ccm, have the following sample, started the quad yesterday and forgot to pull the choke, I immediately went out after I had released the finger gas in idle. When I wanted to start the quad again nothing happened anymore, it just clicks once and that’s it then, the green lamp that indicates to me that I have inserted the idle light briefly and when I try to start the quad does nothing and also the green lamp leu The same thing is with the light, it doesn’t work. I removed the battery yesterday and charged about 18 hours with a charger for motorcycles, then built it this morning and tried again to start the same problem, it clicks briefly and that was it then. I then connected a 12 volt starting aid device, to the built-in battery, but also here the same it clicks once to twice briefly and then nothing just does with the difference the the green control light for the idle, still lights up, also the light can be switched on. I then removed the battery and tried only to start with the starter device, but also here does nothing except the said click, however the green control light lights up and also the light can be switched on. Now to my question, is now the battery gone, or is something else broken on the quad, maybe one of you can help me. Thx Hijacker2001