Join Date: May 2006
Location: Lehigh Acres (Ft Myers), FL, USA
Re: Battery or Alternator Issue?
You "may" not have a problem at all. My (non-BMW) trickle charger(s) always charge for a bit when first connected, then after a while sense that the battery is "charged" and fall back to trickle, turning the indicator to green.
I think there is a "solid state" checker available now, but not cheap, that can check the status of a battery in seconds. Or, you could use the old standby of putting a somewhat heavy load on the battery for a bit, and see if the battery voltage stays up. Your local BMW dealer likely has one or the other ways of checking it.
If the battery can reliably start the engine after sitting unused and off the charger for a couple of weeks, its likely the battery is fine.
Its very unlikely that you have any alternator issues with such low miles.
2012 K1600 GTL
2007 R1200GS Adventure