Zero is in the process of changing our charging and storage recommendations for 2013 and newer motorcycles, but it has nothing to do with power pack overheating, lawyers, or any of the other issues discussed above. We’ve learned much from several years of experience with our current cells and from data provided by the manufacturer. We are applying these learnings in a number of areas. One key change is that we are no longer requiring that you always keep the motorcycle plugged in. In fact, we have found that our 2013 and newer motorcycles should have even longer and healthier lives if the motorcycle is left unplugged when charging isn’t need.
I guess I don't understand why people are having trouble with Aaron's statement. He says NOTHING about the BMS or any of the electronics, NOTHING about anybody's perceived risk of fire, the one and only consideration is lifetime of the cells. Sounds like long-term data from the lab and the field indicates the batteries might be SLIGHTLY better off if they're not continuously trickle-charged once they reach 100%.
I'm with Terry....if I was going to store my bike for anything longer than a couple of days, I'd unplug it. But since I ride essentially every day (god bless San Diego weather!), I'm not going to change my habits. I'll ride during the day and recharge it overnight. I'm not going to be rushing out to unplug it at 2 in the morning because it should be done charging.