Fiido C21 Pro Cycling review 

A comment on charging... In my last ride I drove the battery flat on purpose. First because I wanted to know what happened when the battery drains to "zero" in the middle of a ride, second because I wanted to ascertain the bike is fully rideable with a drained battery and third because I wanted to know how long it would take to charge the battery from "zero" to 100%. So, I used assist levels 4 and 5 for most of the time... I started with 40% of battery remaining and after 6.5 km que battery indicator started to flash and strangely the Fiido App started to show number "1" in the field where the remaining charge is shown. This stayed like this even after the battery was fully discharged. At some point after that the bike entered a form of battery saving mode and even at assist level 5 I didn't feel the motor helping much, but I could still feel it pushing me for another 3 km or so. There is no visible indicator that the battery is flat or that the motor is no longer working, so I cannot say precisely when the motor stopped to assist, but it was around that 3 to 3.5 km mark. The control panel and lights were still powered and I was able to use them throughout the ride even with no assistance, so some energy is left in the battery for these functions (probably the reason the indicator in the Fiido App shows "1"). As I arrived home I plugged the charger but as the bike was in a shed I could not see when the charger turned from red to green indicating the battery is fully charged... I guess if anyone wants to be precise it would be like watching paint dry as I can think of no way to precisely ascertain the charging time under these conditions. What I did was, I set a 30 min timer in my phone and every 30 min I went to the shed to see if the battery was fully charged, so there can be a about 15 min + or - in this metric. In my test I am confident to say that it took more than 4h to fully charge the battery under the test conditions, but less than 4.5h. The charger actually gets quite warm (but not super hot), so a well ventilated place is advisable. I hope this is useful.

With the second battery it has a cool range. By my experience, 50 km is enough for the body. Flat is boring, hills are tiring.😊 Since this is your first, you can't appreciate enough the extras it has. The hydraulic break. The ability of pedalling. Speed. And the torque sensor. It is exceptional, normally they drag you, even if you don't want to. Cool bike! .. and even the standard battery is replaceable while it is not removable. Fiido is quality low budget bike.

When you talk about range, don't forget your weight. When I have 70 km, my girlfriend has 120.

I worked for Ferranti in the late 70's. Bracknell was their place. I had never realised how beautiful it was. I have an arthritic knee and a sciatic hip but I think I will visit this place again on my C21 (when it arrives) :-) You do 20% an hour so 5 hours max there. I really enjoyed your video, it was a tad scary on times, vicarious, but I found it lovely that you have so much space. One of the best videos ever 🙂

As I mentioned in the blog post, the C21 comes with a 25 km/h (15.5 m/h) speed limit, after which it cuts the assistance and the motor does not provide any power again until the speed gets down to 25 km/h (or lower), but I just found out if you press the arrow down button (V) and hold it pressed for about 10 seconds, this either increases the limit or disables the restriction. I tested it and it works. The motor continued to provide power above the 25 km/h, but I think the limit is just increased to 35 km/h as per US regulations. When you do that a little icon of a "rocket" appears on the display of the control panel (meter). Its good to know, but I am trying to find out exactly what the setting does and if a restriction is still in place, what the new restriction is after you setup the bike this way.

To everyone watching this video and reading the comments, I have now received the range extender battery for this bike from Fiido. I have not had the time to install and test it. The installation appears to be less straight forward than I would have hoped. I will do my own review, but for those who cannot wait, there is an installation video in RU-vid ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-lbjlsyEmMHU.htmlsi=uWvElsSWEVOMKvSM

11:00 You are mixing support with the reality of gear change, it can never be the same. In a few rides you'll probably not even notice it 🙂 13:35 Most lycra clad hooligans go mental if a car passes that close :-) 17:50 The gear difficulty is probably down the the torque management system. Not sure how to get a firmware fix for that?

Hi i am planning to buy one for daily commute. Hows it on steep hills? I have couple of steep hills to climb daily. Thanks

how is the range with the battery? some folks say, only about 25km, in real.

hi if this is the size? and how tall are you? is it good for you well thank you

cool the farmers don't make fences and block the bike path