I bought the Optimate 4 charger to maintain my 2012 R1200 RT's battery because of its capacity to do it through the Can-Bus system. My dealer advised me against using it in Can-Bus mode, for some obscure reason (maybe to help them sell the 4 times more expensive BMW tender.) Can someone tell me of their experience with the Optimate 4, especially in Can-Bus mode? Does it actually charge? Are there any dangers to the Can-Bus system involved? I know that in Can-Bus mode, the Optimate 4 does not go through the desulfation process (when detected) and limits itself to 16 V., but apart from that?

Thank you.