Tried to find the answer but didn't got it. I am going to change the battery on my F800GS. I did not want to loose the data/date on the computer and get the service warnings... Thought about connecting the new battery parallel to the old one before disconnecting the old, so I would keep the energy flowing. Doing this I will double the amp capacity of the system. Is this an issue? Will it damage the eletronics? Also, a friend (electric engineer) told me that if the old battery is not with 12v, the difference in tension wold generate a (theoretical?) short circuit when I connect the batteries in parallel... :huh What do you think?? I choose service warnings instead of damage, but really did not want to loose the clock date on the bike... Are there any alternatives if my idea sucked?