Although not listed above^ I purchased the KS-18A 800w 850wh from ewheels.com Jason went out of his way to call me and answer all and any questions I had, his online quick messenger is very very nice and connects you to him anytime He included an upgraded charger for the large batteries for the wheel. he even answered my call at 4am his time… (i didnt know it was 4am or i would not have called him!) and he STILL helped me unlock my wheels top speed. overall experience was RIGHT ON!!!