I recently purchased a 2016 model (actually purchased on February 2017 so a year old) from orginal owner that has had little use. A couple of questions: 1. How long should I expect the batteries to last if they are properly maintained? 2. Recommendations for sources for replacement batteries? 3. It is my understanding that I have a 48V which is 6 batteries that are 8 volt each. I'm totally ignorant about mechanical things but wouldn't want to put the wrong thing in it! 4. Besides making sure the batteries are topped off with distilled water is there anything else I should do for maintenance? 5. What kind of speed should I expect? This is converted to street legal and recently with a full charge and the windshield up and 2 passengers with a combined weight of about 370lbs I was able to get to 32mph on a level asphalt road. Is that about right? Appreciate the help.