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this bike came really fast. Very surprised at the quality considering the price. It was packaged very well however my fenders had a little kink in it during shipping. I don’t care about that. It is very fast and a solid bike. I own two other Nami electric folding bikes and this is on par with their quality. The only concerns I have is whether or not I’m able to purchase a second battery when this one needs replacement. This is my first electric bike and I’m very impressed with the fun factor.

I bought this bike for my 5'2" tall wife. The saddle goes down to about 28" which is low enough. But the crank arms are too long for her anatomy and force her knees uncomfortably high. I contacted the manufacturer (very responsive!) and they told me they unfortunately had no other crank arms. But I decided to keep the bike anyway.Assembly took about 1h and has been well described by other reviewers -- basically removing packing material, putting in the front fender/wheel and adjusting the brakes as well as the derailleur. It's a solid bike, well built, and pretty heavy. The saddle is comfortable but the ride is pretty stiff. It has a front suspension which I didn't see as being very effective.But let me tell you about the electric aspect! I'm 6', 220 lbs. This bike really moves! In the assist mode it gently starts up the motor after a couple revolutions and gives you a real boost. Going up a hill is possible with 3 gears higher than normal. On a flat surface I found myself soon forced to pedal faster than what I was able to keep up with. Even in the highest gear.Which leads me to full electric mode. Hit the minus button on the controller until the top lights go out and turn the throttle. It's almost like a small moped. Granted, it's not able to push me up a hill. On hills I do need to help with the pedals. But on a flat surface 15 mph is no problem for the motor alone. Down the hill you can disengage the motor after you get over 20 mph because it doesn't add to the speed anymore.I compared this bike with my 24 speed mountain bike that I take regularly on a stretch of road 2.7 miles long, 6 hills with about 30 ft altitude each. It takes me 14 min with my mountain bike, that's about 11.5 mph average. On this bike it took me 10 min, an average of 16 mph. Pretty cool! After those 2.7 miles of electric operation (with pedal assist up the hills) I lost one of the 5 points of battery charge. It went from 4 to 3. I think that coincides well with the observation of other reviewers regarding battery life.

It's a solid e-bike, but it's also very heavy one for a folding bike. I found it difficult carry when the bike is folded as the carrying handle is useless, and the center of gravity is towards to the rear wheel so one has to find a place in the rear of the bike to pick it up. Even when the bike is folded, it's bulky and heavy, It's difficult to walk with it while carrying it. It's easy to hurt one's back if he or she is not careful. I would not recommend carrying this bike up or down stairways.The e-bike rides smoothly for a large guy like me. The gears shifted smoothly. I love the spring loaded gears shifter. The front and rear brakes will need adjustments.The assembling of the bike is mainly on the front wheel when it is out of the box. You will have to fiddle with the front hood to attach it correctly. You will have to disconnect the cable to the front brake to install the front wheel. Make sure the cable's end cap doesn't shred off by the brake assembly when disconnecting the cable. It will be best to watch the assembly videos on Youtube before installation as the bike comes with no assembly instructions. I have not tried the e power yet but will edit this review when I have tested it out.Edit 07/25/2017:So I have a chance to test out the electric power of this e-bike and it's fast! Even at low setting for a rotund person like me. Once I started pedaling, the motor will catch on about 5 to 10 mph and whiz me up to about a good 20 mph. One will need to ride this bike using high gear with the e-power or else your legs flying all over the place. The battery is lead acid I think so it adds to the weight of the bike, but it will last you all day on a flat road.

It's my 1st electric bike so I don't know what really to expect but one thing I do know is that this thing moves. I use it to commute to work over the Williamsburg bridge. 15 min bike ride compared to 35min on a given day on the train and the assistance help me to stay cool and dry with minimal work. I am very impressed with the quality as well. One thing to note, this bike is heavy. Once folded you won't be carrying this no where. It's at least 50lbs. And where the carrying bar is located it makes it difficult.

The headlight/horn is completely frail, and prevents folding the bike. However, the wires broke off within two days (60 miles) of riding, so it wasn't an issue after I removed the light completely. Other than that, it's a great electric bike. I put about 24-40 miles per day on it, and it does the job well. I have steep hills during my ride and it really helps with the effort required to go uphill. The gears only go up to 7, which means that when on flat ground, and pedaling for all that I'm worth, I can only get up to 19 mph before the pedals just spin madly. I pass other cyclists when going uphill at nearly twice their speed, but not so much on flat ground or downhill. The rear has no suspension at all, so I bought a $50 suspension seat post and it made a huge difference. (31.6mm https://www.amazon.com/gp/product/B071YLB5CN/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1)People ask me about it all the time, and it's nice when mounting to the front of a bus that I can fold the handlebars down out of the driver's way. For the money, I'm very happy with my purchase. (One other note, the rear wheel is very difficult to remove, according to two shops I've taken it to for tube and then tire replacements.)