I have read that keeping the battery as low as possible will extend its life. My S85 will have dual chargers. My commute is 17 miles round trip. Would it make sense to keep it on the "low" side (maybe 60 miles) when I know I am not planning to go anywhere after work. In case I needed more, I could pretty quickly add more with the HPWC (during dinner, if I was going out in the evenings). For those who have the car and have lived with it for a while, is this too severe to maintain? Would it be worth it? Or should I just charge to 50% every day?