I bought two of these bikes for commuting...and two extra chargers to keep at each of my offices, so that way I can charge for the ride home. The second battery is very expensive, but the second charger is not. I had a flat tire from letting the tire go too low and then taking a curve...the bike shop called it a "slider" flat...otherwise, I ride long distances and don't have trouble. It needs to have rack accessories, inlcuding panniers, that you can actually get...they don't seem to sell them even though they have pictures. You will experience the motor cut out the other reviewer talked about if you "ride the brake"...as long as you let go of the brake before you engage the throttle, that doesn't happen. These bikes are so zippy they are a blast! My biggest problem has been with the brakes...they do seem to need adjustment often, and new pads. I try not to use the brakes, but let's face it, the disks are tiny and the bike weighs 75 pounds. Still, the world would be a better place if everyone rode these bikes. I also own several Segways and an electric boat (DUFFY), so I like electric stuff. As with all the other electric things, it is best to keep charged...the lower half of "the tank" always seems to go faster than the 1st half...so you may have to pedal if you run out...and if you do, it will probably be on a hill! But the good news is that you CAN pedal...and it's good for you. Great product. And I'm sure it will get better.