Bought my 2014 Spark 15 months ago with 35,000 miles on it. Now has 48,000 range runs 83-95 miles (depending on how efficiently you drive. I'm an old hyper miler so get 6-7 miles/kw in town, 5 miles/kw freeway). Battery capacity is 15.8 KW, I fast charge about 6-10 times a month as I frequently...