I'll tell you a little story so if it happens to you, you will know what not to do. Rode my Goldwing, everything was fine. Two days later, turn the key on, all good, lights on, hit the starter button, POP, all lights go out. Dead. I thought it must be the main fuse (there are two of them). They were good. Getting 12.8 volts at the battery and across the main fuses. On the othere side of the bike is the fuse panel and relays. Almost no power there. Everything is totaly jammed in a Wing and there are a million electric gizmo's. I called my son (he's a mechanic) he checked some stuff after ripping more stuff out just to get to things. Then is says"just for fun, put a battery charger on it". I said no way, we are getting 12.8 volts. So I did and the lights came on but wouldn't turn over. Put the big charger on, it started to turn over. Put a new battery in it today, started and ran perfect. He took the old battery to work and put it on the checker and it wouldn'd even show that it was connected (junk). In all my years messing with cars and bikes, I have never seen a battery do this. Something must have shorted in it but how does it still have 12.8 volts? Sorry about this being so long but maybe it will save someone some grief someday.