Just picked up a new leftover '08 K1200S and I'm having an issue with the battery. The dealer tells me that if the bike is left dormant for more than 2 days, it must be hooked up to a tender. Supposedly the computer's draw is enough to drain a fully charged battery in a matter of days. This sounds absurd, since my other BMW's can sit for 2 months with no charger, and still start. Any feedback on this will be appreciated.