professorb
Iron Butt Patriot
In case it matters...
I had paid the big $$$ for the BMW Motorrad "smart" charger, and have used it religiously whenever the bike was not ridden regularly and all through the winter "wheels up" months. The charger looked like it was charging the battery, but I was surprised last summer when the service shop said I needed a new battery -- after only three (3) seasons. I was plugging the charger into the on-fairing accessory receptacle as advised. [photo #1 shows "full charge" notification when connected through CAN-BUS for charging]
Based on discussions in other forums, I just this week connected the charger directly to the battery terminals. For the first time (for me), after the battery became fully charged the display screen on the charger changed to say "Charging Complete/Battery mainten." [photo #2 shows "Battery Maintenance" mode, only when connected directly to the battery]
So, it appears the "smart" chargers will charge a battery through the CAN-BUS connection, but they will NOT perform the designated battery maintenance routines unless connected directly to the battery.
Live and learn...
I had paid the big $$$ for the BMW Motorrad "smart" charger, and have used it religiously whenever the bike was not ridden regularly and all through the winter "wheels up" months. The charger looked like it was charging the battery, but I was surprised last summer when the service shop said I needed a new battery -- after only three (3) seasons. I was plugging the charger into the on-fairing accessory receptacle as advised. [photo #1 shows "full charge" notification when connected through CAN-BUS for charging]
Based on discussions in other forums, I just this week connected the charger directly to the battery terminals. For the first time (for me), after the battery became fully charged the display screen on the charger changed to say "Charging Complete/Battery mainten." [photo #2 shows "Battery Maintenance" mode, only when connected directly to the battery]
So, it appears the "smart" chargers will charge a battery through the CAN-BUS connection, but they will NOT perform the designated battery maintenance routines unless connected directly to the battery.
Live and learn...