Anyname
Active member
I bought one of BMW's special Canbus chargers when I bought my 2005 R1200GS. For several years, I used it as instructed by BMW, by plugging it into the BMW socket. The problem with this is a household power failure will cause the Canbus to lose continuity with the charger and requires me to reset the charging by turning the ignition on and off again. Since I didn't catch an incident of this, the battery went dead one winter.
A couple of years ago, I added a direct lead to the battery and use that for charging the battery. So far it seems to work fine, but I was recently told that by passing the Canbus can cause problems and overcharge the battery. I'm not sure I believe this and wonder if anyone knows for sure it the CanBus in the bike actually has an active role in charging the battery.
A couple of years ago, I added a direct lead to the battery and use that for charging the battery. So far it seems to work fine, but I was recently told that by passing the Canbus can cause problems and overcharge the battery. I'm not sure I believe this and wonder if anyone knows for sure it the CanBus in the bike actually has an active role in charging the battery.