I will be using my MX for short commutes (< 130 miles/week). I do not have access to a wall charger since I temporarily rent an Apt for another 7 months. So the only option I have to charge is the supercharging station. Would charging at a supercharging station for the next 7 months be ok for the batteries? How does this impact battery life, if at all? People on this forum talk about the 12v battery going dead - can someone please elaborate what this means? Thx.