I picked up my MX 75D a couple of weeks ago and trying to understand best practices for charging the battery. I am able to charge at work for free 4 hrs per day and do not have a charger at home because my condo building wants to charge me $150/mth for a stall with ability for charging. RIP OFF! 1) I have heard it is best to set the battery max to 70% instead of 90%. Is that accurate? It looks like the new feature shows "day trips - 70%" and "road trips - 90%" or something to that effect. 2) Is it best to charge a little everyday and keep it at the max level or wait until it gets a little lower and charge less frequently, but for longer duration? This would put me at charging about once a week.