Fiido C21 Review: Is It a Gravel E-Bike or Hybrid? 

But the large chain plate can make it faster on flat roads, please remember that this is an e-gravel for leisure and commuting

@@kevenwang8454 it’s branded as a gravel bike, but can definitely be used for leisure and commuting as well. So far, it’s been a great all around bike for me.

One or two big niggles... for one the location of charging port and the non-removable aspect of the battery means you need to charge it where you store it, and that's combined with low capacity it's not as good for many city, as in multi-storey blocks of flats, dwellers... were it at least removable, it'd be far better an option. Once you do get it wet and dirty, the location of the charging port may make it quite dangerous or dirty... Bearing in mind L-Twoo also offers clutch dérailleur designs and 11-51T cassettes (46T or larger) or similar for only a tiny overall price increase, this really should've come with such better system from the get-go, especially with the nigh on 50T front ring. That would've given it both high top speed thanks to the smallest cog at the back and the big one at the front, but also better hill climbing with far larger rear plate... Furthermore, if they want a clutch-less design in the cheaper derailleur, why not strap extra chain guards, or better yet, chain tensioner(s) near the front ring... it'd make more sense if any off-roading is to be had. Then they're selling the idea that it's lockable/unlockable based on proximity of paired devices, but that's just the electronic stuff, it'd be better if they managed some physical lock integrated into it as well to truly lock the bike... Otherwise, it's kind of limited and still power hungry (always-on electronic proximity sensor needs to sip juice, but it's consuming it nonetheless). Funds spent here should've been used elsewhere, eg. for non-electric drivetrain. Also, one cannot forget their solution for HDI with centrally mounted UI with keys and still a "remote" near the grips. It'd be better to either have a bigger screen or have the centrally mounted part sleeker, and just use the remote for interacting, no point in having 2 at the same time. Are the lights synchronised with the computer and powered by the battery? Maybe the front one is, but the rear seems to be a completely separate solution. Again, it'd be better to offer these two powered from main battery or other shared energy source, with controls integrated into the computer for both, than to have smartwatch unlocking feature. Heck, maybe a dynamo on the front wheel to charge/power both lights would be a better non-standard/primitive differentiator... And then, the fact that it has a single water bottle holder point means if you want their extender, you're out of water, aren't you? This should've come with 3 mount points at least, since the battery is non-removable one should be there, another on the top tube and final on seat-post tube. It should've had the front rack mounting option similar to its C22 low-step brethren. Finally, many competitors chose to offer belt-drive on such models, I wonder if going with one instead of this base L-Twoo unit wouldn't improve overall product recipe...

Oh !! 😮 Thanks for the quick response and all the details!! 😊 my main use is the work bike which is 8km from my home with just a nice climb of 300m. I tell myself that the advantage of the C21 is that I can also use it on a bike without assistance from time to time. what scares me is the 50-tooth chainring!! which one would you take Fiido or EST100?

You can remove the battery from the bottom there’s 4 screws, they even sell replacement batteries

@@ebikechoices thank you! I still have to choose between the grey and the dark green one. Beautiful bike!