I have a GIO 50cc that when I try to start it turns over a couple times then stops...I know the battery is ok because the rear
tail light comes on when engage the brake and safety. I leave it for a bit then try and start it and it turns over a couple more
times then thats it...?

 

Just because the light comes on does NOT mean the battery is good. The lights are LED so it does not take much for them to turn on but the starter needs all the power the battery can give. Put a charger on the battery. You should use a battery tender to keep a full charge all the time.

 

I did have it hooked up to an automatic charger while I was trying to start it...assuming it would provide the juice to do the job? I just put it on a trickle charger for the night but I have started my other units with the auto charger when they were down.

 

Also the batteries in these are junk. Some last and most dont. You can go to most autoparts or walmart to get a new battery. The number is 4LBS.

 

Ok problem solved...bad plug...not that old either...anyway I replaced the battery too, thanks for the tip...