I'm a big guy, 280 Lbs, bike pulls me around just fine, my wife is 140 lbs, she got the girls version, only difference is her battery lasts about 10-15 min longer. Ok lets get to the review.
1. Assembly: Took about 20 min to put together, came with all the tools needed and was simple, put on the front wheel, seat, handle bars, pretty simple. A++++++++
2. Quality: Woot, what a nicely build bike, the bike is extremely well built, I am 55 years old and have owned a lot of bikes, I have never had one built this well. A+++++++
3. Bike Weight: Its well built, so sure it weighs a little more, with out the battery in, it weighs a little more then my Huffy. A++++++++
4. Battery: Last me about 10 - 12 miles, but I don't petal to much and rely on heavy battery use, I guess if I petal more it would last longer. It is far more then I expected. A++++++
Overall, this is just a fun thing to have, me and my wife are riding all over and having a great time. I needed to do something that would help me loose some weight, and this is helping lots, cause you do petal some, but when your tired just give it the gas. When you remove the battery, the bike goes on the bike rack just fine, also the battery locking device works really well, so if you park the bike and go shopping or have lunch, you don't have to worry about someone grabbing your battery. I'm glad I forked out the bucks to buy them, they are so much fun.