When I recently purchased the ST2, it was discharging the battery for no apparent reason. I was told to remove the battery to reset the system. Today, I notice when I went to ride the ST2 and turned it on, it stated 0 battery when it was at least 75% originally. I had to remove the battery and re insert it a few times and then it read the proper battery percentage. Then later in the evening while riding on a trail, I notice that onboard computer screen stated "System Error” “motor error” etc with instructions telling me to turn off the bike, remove the battery and re insert. Well I was far away from my residence and it was late in the evening, 11 o'clock or so. Needless to say that I got a bit worried if this bike left me stranded. I couldn't get this error issue resolved. I had to remove the battery more than once and it finally the system reset itself. While riding the bike home I notice some hesitation within the motor system on level 3 and 2. It seemed like it was holding itself back and not running smoothly, very strange and very hard to describe it but this bike is brand new!