The E-Zip is a nice electric bicycle for the price. If the price drops, I'll consider buying one for myself. With colder temperatures, a rider won't get some of the ranges posted here from people who bought during the summer. I'll have to test the voltages on the batteries again soon as the originals are nearing a year old. If the levels aren't sufficient, I plan on using the Renaissance charger to see if I can bring the batteries back to adequate levels first. Other than problems already posted, we haven't had too much difficulty with the bike. KEEP BOLTS TIGHT. USE BLUE LOCTITE. This E-Zip has about 3K miles on it and it will be ridden this winter, too.