In some small town down the coast of Normandy Jaspy had the both batteries he kept cause he bike would not charge, completely empty. He asked for help at a local Garage. While his batterie was on the charger (he already knew the real problem, a broken alternator, could not be fixed quickly) the travelers walked into the touristic center of the town to have a drink and visit some art-galleries. The bike had been on the charger for one and a half hour but lasted only 30 klicks. Enough to get to a campground though.
Later they found a better solution to solve this problem by swapping batteries with Beer. This way Beer's bike had to be push started, but hey ,at least we could continue.