Team, I bought this 2009 800GS just before winter. All winter long bike sat on battery tender (BT), about 2 month ago I started riding, the bike would start with no issues, but would have a hard time starting once the engine got warm, it would turn over but then would quickly die, I changed the battery as it looked to be the original BMW. With new (March '19) battery (Yuasa) bike started hot, cold with no issues.
I ride once or twice a week ...jump two month forward to yesterday, bike would not start again, it would make 2-3 clicks and go dead, would not start from a running car jump start either, same symptoms. Voltage meter showed 11.4 volts between the terminals, I connected it to the battery tender (BT) overnight and today bike fired up like new, now it shows 12.9 volts. Yesterday BT showed red, today 24 hrs later BT showed green, after I started the bike, let it run 5 min, shut it off, all good, but is something killing the battery?
Looking forward to your knowledge here.
V+
I ride once or twice a week ...jump two month forward to yesterday, bike would not start again, it would make 2-3 clicks and go dead, would not start from a running car jump start either, same symptoms. Voltage meter showed 11.4 volts between the terminals, I connected it to the battery tender (BT) overnight and today bike fired up like new, now it shows 12.9 volts. Yesterday BT showed red, today 24 hrs later BT showed green, after I started the bike, let it run 5 min, shut it off, all good, but is something killing the battery?
Looking forward to your knowledge here.
V+