So she is bent on giving me trouble I guess. I was almost out of gas today and just made it to a gas station sputtering a bit and revving high - I am still learning how much she will go on reserve - and its not pretty much. Well so I fill her up and hit the starter and it doesn't start up in 5 seconds so I let go and retry a bit later. After 3 or 4 of those, the starter motor starts kicking really really slow - but the head light is strong and the horn beeps - so its not totally dead. So I call a friend and buy a pair of jumper cables (for $30 they are very overpriced!) to connect his car battery to my seemingly discharged one. And I get her to start after a few turns. But there is still a bit of sputtering and I have to hold at a high RPM or she stalls - which is unusual - she idles usually at around 2500 RPM. And even with the car battery connected, the starter motor turning like mad, the engine doesn't fire up readily. After maybe 10 seconds of continuous starter motor action when I am really getting worried I will fry the coil, it finally kicks in. This happens maybe 3 times (because it takes a lot of skill to hold the rev at a level that she won't stall at) and finally I high rev it to a shop. And its still there.
What I need to know is, does the battery play a part in a running bike or is the electrical system self reliant on the dynamo? I am hoping its just the battery being discharged. I am planning to take the battery to Davidson Battery on Broadway to test it and maybe charge it fully as I don't have a charger. Has anyone faced this before? It was running totally fine till today - so I am guessing its the disuse for 3 days and over cranking because of fuel starvation - the previous owner (I have just had this bike for 3 weeks) had said he had replaced the stator and the rectifier.