This bike works great and very affordable. The bike was already put together except for the wheels and handlebar which to all of 15 minutes to attach and tighten. I have been using it for almost a year now and it is a serious game changer. I don't go many places (work, store, and back home) so paying almost 300 a month for gas and insurance on my car seemed like a waste especially now with gas prices the way they are. Now I'm getting a little extra exercise and saving a ton of money at the same time. Also the customer service for this bike is amazing. My bike suddenly quit working out of nowhere ( I exclusively ride this bike everyday and in winter so I wasn't super shocked) and when I messaged the seller explaining what was going on they sent me a replacement motor and controller for free since it was still under warranty, and now it runs better than ever. The battery life was surprisingly long, and lasted me almost two round trips from home to work to home and work again without a need for a charge up. A heads up for anyone about to buy this bike, do not charge the battery unless absolutely necessary. If your battery is below 40 or 30 percent then yeah you should probably charge it up. I ruined my original battery that came with the bike from plugging it in after every trip thinking keeping the battery 100 percent fully charged was a good idea (it's not). I would plug it in at home and leave it charging over night and then when I got to work I would leave it plugged in there too all day until I would go home and repeat the cycle all over. This made it so the battery would not hold a charge and you will end up needing to buy a brand new battery which costs almost as much as the bike itself. However I will say, if you can afford it, go ahead and order the bike and buy an upgraded battery, just make sure it is from ancheer and it is the same wattage as the original. That way you can experience the full potential of the bike and still have a backup battery for emergency. Upgrading the battery takes it from an ok ebike to a excellent ebike (i.e. power, distance you can go and ability to climb steep hills)

Update 8/27/19 - OK, so after taking these things out several times now, we, the spouse and I have noticed a small but nonetheless worthy of mentioning flaw - the kickstand. It positions the bike in too far upright position and the kick stand is not adjustable. I can almost guarantee you that if you put the kick stand down and turn the front wheel to the right, the bike will fall over. Even with the front wheel turned to the left the bike is still too unsteady; such to the point that I bought and installed two adjustable kick stands and mounted them just forward of the original kick stand (removed the original kick stands). The bikes are now much more stable when at rest. I’m hoping Ancheer is listening because this would be a simple fix for them.Update 8/22/19 - The screw/bolt that was missing arrived by FedEx this morning. Pretty good support considering the stuff had to come from China. They sent me four by the way. I needed one. Pretty considerate I'd say. Now as to the ride. The wife and I took them out last Saturday. All told the ride was about 14 mies. We had done the same ride about a month before on the non-electric bikes and the difference this time was like night and day. Just a pleasure. Little incline coming up? No Problema! Just give them pedals a little push or thumb that throttle and off and up you go. Joyous! We both used about a quarter of the batteries for the 14 miles. So, there was PLENTY of juice left. In the review below, I suggested you might wanna invest in a more comfortable saddle. Here's another recommendation: think about a handlebar stem extender. What we found (both of us) was that we were pitched too far forward and by the end of the ride our hands and wrists (and my left shoulder) were hurting. Too much weight/pressure on the hands/wrists. I had noticed this in other reviews. I bought two extenders. Don't worry about installation. Just check on YouTube for instructions . It's idiot proof. The extenders make a BIG difference. You sit much more upright without stressing your hands/ wrists. Now, I can see people kvetching about having to buy a different saddle and handlebar extenders but hey, you wanna be comfortable? Well then spring for the $30-$40 extra or suffer. But don't complain. We're taking the bike out again this weekend for another 14-15 mile trip. If needed, I'll update again but I'm liking this bike so much already that I upgraded the review to 5 stars. I just noticed that these bike are currently unavailable. I'm guessin' that's because they're temporarily out of stock. (That's what happened to me when I tried to order our second one.) I'm also guessin' that they're out of stock because Ancheer can't keep up with the demand. So, snatch one of these babies up the next time they become available.So, I bought this bike for my wife. We live in Manhattan. Don’t let anyone tell you there are no hills in NYC. Believe me, there are. We were heading over the Queensboro bridge to Long Island City. I told her don’t leave me behind. The incline up and over the bridge is not all that steep but it’s pretty long. I hafta interject here that I’m 70+ years old and pushing my old fanny up that incline on my non powered bike was somewhat difficult. Not for my wife though. She just put that baby on the second level of power and BOOM she was gone. It was about then that the thought occurred to me that maybe I should get one on these for myself. So I did. Which leads me to this review. The bike arrived in about a week. It comes about 70% assembled. Yes, the instructions leave a little bit to be desired but truthfully you can probably put this thing together even without any instructions if you have the bare minimum of mechanical ability. They even give you all the tools you need to complete the assembly. The only trouble you might have is mounting the front wheel, getting the disk inside the disk brake. Plus, afterwards you’re gonna hafta adjust the brakes. There are no instructions that come with the bike on how to do this; but, with a little know how or looking on the interwebs you should be able to do this without too much problem. Which brings me to support. I didn’t need any when assembling my wife’s bike but when mine arrived, one of the screw/bolts that tighten the handle bars to the stem was missing (one of four). I checked the shipping box thoroughly but it was gone. Probably loosened up and fell out during shipping. I contacted Ancheer (through Amazon. It was a weekend so I wasn’t expecting an instantaneous response.) via email and on the next business day they got back me. Pretty good I thought. I explained about the missing screw/bolt and they were quick to tell me that they would send me a couple replacements. It’s been about a week now and although the screw/bolt hasn’t yet arrived, I’m willing to be patient as I understand that the part likely has to be sent from China. I’ll update this review in so far as support goes as needed. As to the bike: it’s a little heavy and its a little small. I’m about 5’ 10” and it’s OK for someone my size (and my wife who is shorter) but if you’re over 6’ tall this bike might be a tad small for you. I’m not an expert on how to size a bicycle; so, that’s something you need to consider. Weight - yeah, it’s pretty heavy. Off the top of my head, I think it weighs in around 54 pounds (that’s with the battery). We haven’t run these babies enough yet to make a honest assessment of them but I’ll adjust this review as we get more ride time. Oh, the saddle, you might wanna consider buying a different saddle. We did but then again we’re a couple of old timers who thought a nice padded seat was in order. Like I said, I’ll adjust this review as time goes by but for now with the little ride time we’ve had with them (and with the quick response we goy from support), I’m thinking this is a pretty good value. I’ll adjust as needs be.7/13/2020 Edit: OK, It’s been just about a year now since I bought two of these for myself and the spouse and we are totally satisfied with the bikes. I realize posting this edit might in fact be pointless as this particular model is no longer available but for anyone who stumbles across this review, I will say that the Ancheer products that we bought have been 5 stars (both the product & support). I did notice that Ancheer is offering other models now and for what it’s worth, I wouldn’t hesitate to purchase or recommend them. Yeah, there are better e-bikes available but not at this price point (IMHO).