I know twins don't encounter this much but!
Ever loose your generator while riding some distance away?
Well yes it would happen to me!, and only 220 miles away from home. With all the accessories installed on my bikes, heated grips, aux lights, heated seat, radar, espresso maker “ha!” My dashboard first goes blank, and all of a sudden my bike dies in the middle of nowhere! What do you do? In the old days of carbs you could roll start your bike. Today with fuel injection & other electronics you need the charging system to ride. What do you do when this happens?
This happened to me last summer, my idea was to buy a car battery and replacement battery cables, install them across the bike battery and drive it home. Its easy and it only took 1 hour. I returned the battery and cables after I got back safely.