So I took my bike out for the first time in about 2 months or so, before that it had fuel stabilizer in it and I'd idle it at least once every 2 week to 3 weeks. Drove it to work. it was running fine even got up to 50mph then when I went to lunch. It was bogging down on me. Barley made it back to work had to drive like 10mph or it would die. Got it to work and later it just wouldn't start at all. So I put it in a truck and got it home. What's going on? Also I have the battery on a tender the tender goes from green flashing to solid green indicating a full charge, but when I turn the key in the ignition not even my lights come on. Does engine have to be on for lights to work. My battery seems fine it is old I don't know how old. But the tender says it's charging.