I only charge 100% when I know I need the extra mileage or I know I will use more power if it is going to be a +20 mph windy day. I have +3500 miles on each of my 2016 Radrovers. I probably don't have my 35-40 mile range when new; but, I'm always +30 miles before seeing one bar (I have the old 11.4ah battery). Not topping off daily on short rides, only recharging to a level you need for the next day, and never storing the battery with 100% charge will give you more time on the back end.