My Sena helmet headset charges from the bike in the Frunk and the SM10 is always on in the rear trunk. I have left the bike for as long as 2 weeks with out its maintaince charger connected and it was fine. I usually do connect the maintaince charger if I am going to be away for more than a few days. If I am home, I ride more than once a week so its never on the charger.

Point is, my SM10 has been on continuously for several months now and pairs each time I turn my headset on. Very convienient.