bafang bbs02 review

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E-bike conversion kits remain popular in 2023, and the Bafang BBS02 is still a favourite amongst DIY electric bike enthusiasts. This comprehensive review examines this popular option’s installation, motor performance, and potential problems. All the information in this Bafang BBS02 review has been gathered from 3 years of experience installing, servicing and test riding.

Skip to product specifications

Key features

  • 750w nominal power with 1200w peak power (48v battery)
  • Compatible with most frames (BSA threaded bottom bracket)
  • Kit includes all mounting accessories
  • It can be programmed with an optional USB cable and software.

What’s included in the kit?

The Bafang BBS02B comes as a kit with several accessories and fixings. The contents of the kit may vary between suppliers, as some will add extras like a lockring spanner and a gearshift sensor. Below is a list of what is usually included.

  • Bafang BBS02B motor
  • Display
  • Wiring Harness
  • Inner and outer lockrings
  • Mounting plate
  • Allen bolts and spacers
  • Speed sensor and wheel magnet
  • Brake cut-off sensors
Bafang BBS02 e-bike conversion kit with all accessories
The Bafang BBS02B conversion kit with included accessories


The Bafang BBS02B will only fit bicycles that use a BSA threaded bottom bracket. These measure 68 mm-73 mm across the frame and have an internal diameter of approximately 33.5mm. If your bike has a press-fit (see below) or another type of BB, then I would seriously consider a compatible donor bike, as it will make installation a lot more straightforward.

will the bafang bbs02 fit any bike

I would not attempt to install the BBS02B on a bike with a press-fit bottom bracket. Although, in some cases, this may be possible with a bit of ingenuity. A normal reducer shim may not be sufficient, as it’s unlikely there would be enough clearance between the motor axle and housing (to clear the BB shell). You would need to machine an eccentric shim for this to be possible.

Lots of modern mountain bikes (and some adventure bikes) have boost rear hub spacing (148mm) to accommodate the wider tyres commonly used. The problem with this is that the steep chainstay angle can prevent the motor axle from fitting in the bottom bracket shell. There’s no easy way around this, and I would stick with 135 mm-142 mm rear hub bikes.

I have installed both the BBS02 and BBSHD on carbon fibre frames before without any long-term issues. But, most modern carbon bikes have a press-fit bottom bracket or a beefed-up bottom bracket area. This may make installation very tricky. I wouldn’t advise this and would recommend finding a good aluminium framed donor bike.

The Bafang BBS02 is straightforward enough to install if you have the right tools and you’re comfortable working on a bicycle. The hardest part would be to remove the bottom bracket bearing. On older bikes, this can be very hard, and you will want a long breaker bar (and a lot of patience).

removing bottom bracket
Removing the bottom bracket usually requires a breaker bar

Once the bottom bracket has been removed, you should thoroughly clean the area, ready for fitting the motor shaft. Providing your bike is compatible, this should be fairly straightforward. You may need to remove the cable guide (if you have one) underneath the BB shell, as this might interfere with motor fitment. Also, in some cases, you may need to file down any burrs where the frame tubes meet the BB shell (internally).

bafang bbs02 installed in bottom bracket

When the motor is in place, and the lockrings tightened, then it’s just a case of fitting the display, speed sensor, battery and brake sensors (if needed). Finally, tidying up the excess cabling can take a bit of time, but it’s worth doing to give a professional finish to your e-bike. For more information on the process, I have included a Bafang BBS02 installation manual in my resources section.

Motor performance

The Bafang BBS02B 750w offers remarkable performance for the price. I’ve yet to come across one person who isn’t impressed by the level of power on offer. Depending on gearing, it’s possible to reach speeds of over 30 mph on the flat with electric assistance. Hill climbing is its forte – the BBS02 will eat 25% hills for breakfast!

The latest Bafang BBS02B is available in three different configurations: 36v 500w / 48v 500w and 48v 750w. The only difference between these variants is the controller (36v / 48v) and firmware settings. The 750w version is the most popular, as it offers the most bang for your buck! The motor itself is physically the same as the lower-powered BBS01 250w / 350w, the only difference being the internals and controller.

Bafang ModelBatteryPeak Power (Watts)
BBS02 500w 36v36v (42.2v x 25A)1055w
BBS02 500w 48v48v (54.4v x 18A)864w
BBS02 500w 52v52v (58.8v x 18A)1058w
BBS02 750w 48v48v (54.4v x 25A)1200w
BBS02 750w 52v52v (58.8v x 25A)1470w
The voltage figures in brackets are for a fully charged battery. Note: As the voltage drops, so will the power.

You can use a 52v battery with the Bafang BBS02B. But, there are pros and cons to going down this route. A 52v battery, when fully charged, is at 58.8v, this is very close to the motor controller’s maximum operating voltage of 60v. Below are some key facts to consider.

  • A higher maximum voltage equals a bit more peak power.
  • You can achieve the same power as a 48v battery but with a low current (amps). This is what I did with my Bafang conversion, and I had over 2000 miles of trouble-free use.
  • Because the start voltage is higher, the performance drop-off isn’t as noticeable as with a 48v.
  • Most of the controller failures I experienced were on bikes fitted with a 52v battery.

I would advise sticking with a 48v battery, which is 54.4v fully charged. I rarely had any issues with the motors that used 48v batteries. If you would prefer to fit a 52v battery, then I would lower the peak current to 22A. I had mine at 18A, and it still went very well.

boardman mtb fitted with bafang bbs02b

Bafang BBS02 common problems

Bafang motors are generally reliable. But, like any mass-produced electrical item, problems do occur from time to time. I have done Bafang conversions, which are still going strong after 4 years and over 5000 miles. The flip side to that, is I’ve also had a fair share of issues.

is the bafang bbs02 reliable

Below, I have listed some of the common faults experienced with the Bafang BBS02 over the last few years. Some of these problems seem to be the result of random manufacturing defects, and others may be caused by misuse.

Controller failure

This is one of the most common problems I’ve come across with the BBS02B 750w. It may be accompanied by an error code (see below). Sometimes, the motor will stop working but will still switch on. If you grab the rear wheel and spin it backwards, if there’s significant resistance, this can indicate a blown controller.

bafang bbs02b controller

Controller failure can happen for several reasons, and there are things you can do to prevent this from happening. In some instances, there may be a manufacturing defect which has been missed by quality control.

  1. Never pull away in top gear whilst in full power mode. You should always select a lower power setting and be in the lowest gear. Treat the same as you would a motorcycle or car, and always select a low gear for pulling away.
  2. Modify controller settings. You can dial back the start current and maximum peak current. I had mine set to 18A with a lower start current and never had a single problem in over 2000 miles of use.
  3. Don’t use a throttle. A throttle is okay to use when you’re already riding along at a few miles an hour. But treating it like an electric moped and using the throttle constantly without pedalling will lead to problems.
  4. Try to avoid water. Although the Bafang is water resistant to a point, it’s not waterproof. Any prolonged immersion in water or using a power wash to clean it is asking for trouble (I know this from personal experience). Even leaving it out in heavy rain can cause problems.
  5. Stick with a 48v battery. Fitting a 52v battery does have its benefits. But most of the controller failures I’ve dealt with were on bikes fitted with a 52v battery.

Replacement Bafang controllers are available from Amazon

Speed sensor problems

This is another common fault and is usually easy to rectify. You will likely get a 21 error code. Below, I’ve listed some of the causes of issues with the speed sensor.

bafang speed sensor
  1. Faulty or damaged sensor. The sensor is quite vulnerable to knocks and can be easily damaged. Replacements are very cheap and easily available.
  2. Bad connection. Check the connector plug, it should be screwed in firmly. Make sure the connector pins are not bent.
  3. Misalignment. Make sure the wheel magnet lines up with the arrow on the sensor.
  4. The gap between the sensor and magnet. Ideally, the gap should be between 2mm and 5mm; any more or less can cause problems.

Replacement Speed sensors are available from Amazon

Pedal sensor problems

If the pedal assist isn’t working, but the throttle is working fine, then that points to a problem with the pedal assist circuit. Unfortunately, as the PAS sensor is internal, it usually requires motor disassembly to fix. I have listed some of the possible causes below.

bafang pas magnet ring
  1. Controller connector plug. Sometimes, the plug that connects the controller to the PAS circuit is not properly connected. You will need to remove the controller and check the connection and connector pins.
  2. Faulty PAS circuit board. This may be a manufacturing defect like a poor solder. Replacements are very cheap, but you will need soldering skills.
  3. Broke PAS sensor magnet ring. It’s another fairly cheap fix, but you will need to disassemble the motor to do the job.

Hall sensor problems

A hall sensor provides rotor position feedback to the controller. If one or more hall sensors become defective, then it will affect the running of your motor. You may get an error code 08 on your display, and it is usually accompanied by a loss of power and a grumbling sound.

bafang hall sensor

You will need to disassemble the motor to visually inspect the sensors. Sometimes a poor solder can cause the problem, or they can just fail. Either way, you will need to be a competent solderer to repair yourself. The sensors themselves are very cheap and easy to get.

Wiring harness problems

This problem is often accompanied by an error code 30 and can be caused by a poor connection, damaged wiring harness or bent connector pins. It may result in complete loss of power or the malfunction of other components like the display or speed sensor.

Replacement Bafang wiring harness available from Amazon

bafang wiring harness

List of Bafang error codes

  • 05 Throttle abnormality
  • 06 Low voltage protection
  • 07 High voltage protection
  • 08 Hall sensor abnormality
  • 09 Phase line abnormality
  • 10 Controller overheating
  • 11 Temperature sensor abnormality (in the controller)
  • 12 Current sensor abnormality
  • 13 Stator overheating
  • 14 Temperature sensor abnormality (in motor)
  • 21 Speed sensor abnormality
  • 22 Communication abnormality in BMS (battery management system)
  • 23 Front light abnormality
  • 24 Front light sensor abnormality
  • 30 Communication in system abnormality (wiring harness or connections)

A bike converted to electric using a Bafang BBS02B, may not be legal to use on public roads in some countries. This depends on your local e-bike laws. If you’re not familiar with the e-bike law in your country, it’s advisable to check beforehand. In the US, federal law allows for 750w e-bikes. But, in the UK, EU and Australia, the maximum continuous power is limited to 250w (peak power can be higher, but it’s the continuous rating that’s important).

is the bafang bbs02 legal

A Bafang BBS02B 750w is rated to 750w continuous, with a peak power output of up to 1470w (with a 52v battery fitted). If you are in the UK, and planning on using this on private land, that is fine, but if you are going to use it on public roads, then you should be aware of the potential legal implications first. Please read my article on UK/EU electric bike law.

Which is the best Bafang display?

When the Bafang BBS02 was first released back in 2015, there were only a couple of displays to choose from. Nowadays, you are spoiled for choice. Below, I have listed the 5 best Bafang displays suitable for the BBS02B.

best bafang displays dp-c18 500c and c965
  • P850C  This colour 3.2″  display has been around for a few years now but has continued to be a popular option. It has great functionality and is one of the more affordable options.
  • 500c If you want a smaller display that can be mounted near the left-hand grip, the 500c ticks all the right boxes. It has most of the functionality of the P850c but in a more compact size.
  • SW102 The smallest of the available Bafang displays is ideal for riders who want a very small but functional display.
  • DP-C18 This display is made by Bafang and is used on a lot of factory e-bikes. It’s the most expensive of the bunch but is very high quality and has added functionality.
  • C965 is The oldest of the displays here. The C965 has been around since the beginning (2015) and is still quite popular due to its simplicity and minimalist design.

Bafang displays are available from Amazon

p850c display on boardman mtb bafang conversion

Programming the Bafang BBS02

One of the great things about the BBS02 is the ease by which it can be programmed. This doesn’t mean programming in the classic sense, more like re-configuring the controller parameters to better suit your needs and environment. Most e-bike controllers can be re-programmed, but none are as straightforward as the Bafang.

bafang usb programming lead
Bafang USB Programming Cable

It doesn’t cost a lot of money to get started. You’ll need a laptop or desktop PC, a USB programming lead and a copy of the free Bafang config tool. I won’t go into too much detail here as there’s enough info for a separate article. I’ll just cover the basics of what can be done.

  • Low Battery Protect (volts): This can be changed if you’re using a 52v battery. It shouldn’t be set too low, as although the battery BMS will override this, it’s not worth risking over-discharging the battery and potentially damaging the cells.
  • Limited Current (amps): On a stock motor, this is usually set to 25 amps and cannot be raised any higher. I usually lower this to 18A, which will reduce the peak power but can improve controller reliability.
  • Start Current (%): You should either leave this alone or lower it slightly. If set too high, you run the risk of blowing the controller. Setting this lower is great for a smoother start-up and particularly good if you’re using an internally geared hub.
  • Slow Start Mode (1-8): This setting determines how quickly the power ramps up on start-up. I would leave this, as being set too low can potentially blow the controller, and too high results in a jerky pedal assist (when starting pedalling).
  • Time of Stop (x10ms): This determines how quickly the motor shuts off after pedalling stops. I sometimes find out of the box this is set too high (25ms); I usually reduce this to 10ms, which means the motor shuts off instantly.
  • Keep Current (%): This setting reduces the current down to the set percentage of the current PAS level based on your pedalling cadence. You will get 100% at a lower cadence, but as your pedalling rpm increases, the power is backed off to the percentage set (e.g. 70%). I have found that this is set as low as 40% on some motors, which is way too low. I usually set this to 70%.
bafang programming screenshot

You can also set pedal assist speed and current for each possible assist level (up to nine). Plus, there are many more settings you can change. For more information, I can highly recommend the electricbike-blog for the most in-depth Bafang programming guide online.

Bafang USB programming cables are available from Amazon

Bafang BBS02 alternatives

For the price, there’s not much out there that can compare with the BBS02 when it comes to the sheer fun factor and versatility. It depends on what you’re looking for in an e-bike motor.

If you want an electric bike system that’s going to take you up the steepest hill and push you along at a swift pace without fuss, then the BBS02 is for you. If, however, you want a motor that’s going to amplify your effort and give you a bit of a workout at the same time. Then, the Tongsheng TSDZ2 is going to be a better option. Read the BBS02 vs TSDZ2 comparison article.

bafang bbs02 alternative

If you need a motor for real heavy-duty applications like carrying cargo or trailers, then it would be worth paying the extra and buying a BBSHD. It’s a real beast of a motor and is reliable to boot! More reliability, robust internals and bags of torque. Read my BBS02 vs BBSHD article.


Will the Bafang BBS02 fit any bike?

You can only use the BBS02 on a bike with a 68 mm-73 mm threaded bottom bracket.

Is the Bafang BBS02 waterproof?

It is not 100% waterproof. Riding in the rain is okay, but very heavy rain and deep puddles are best avoided.

How do I choose the right chainring size?

If you are riding off-road, regularly riding up steep hills or towing a trailer, a smaller chainring the better. If you are looking for better top speed, then you will want a larger chainring.

What is the top speed of a Bafang BBS02?

The maximum possible speed will vary depending on your bike’s gearing. Most users report a top-assisted speed of between 28-32 mph.

What battery should I use?

I would personally stick with a 48v, although there are benefits to using a 52v battery.

Can I use a BBS02 conversion off-road?

Yes, the BBS02 is suitable for off-road use, but you will need to watch out for rocks and other potential hazards that could damage the exposed motor.

Does the Bafang BBS02 come with a warranty?

Most re-sellers offer a 12-month warranty with the Bafang BBS02, but warranty claims can often be complicated and not straightforward. This varies greatly between suppliers, and you should always buy from a reputable source (always check customer reviews).

Are mid-drive motors better than hub motors?

No, they have different performance characteristics and may suit certain riding applications better. There are lots of pros and cons of hub motors vs mid-drive motors. It comes down to your budget and needs.

Pros and Cons


  • Great performance
  • Smooth and Quiet
  • Programmable
  • Compatible with most older bikes


  • Installation can be challenging
  • Potential long-term reliability issues
  • Not road legal in some countries (UK/EU)
  • Heavy
boardman mountain bike with bafang bbs02b conversion


Seven years after its launch, the Bafang BBS02B continues to be one of the best e-bike conversion kits available. For the price, there’s nothing to touch it. The nearest competitor is the Tongsheng TSDZ2, and that’s a pussycat in comparison!

You won’t find this much torque, power and versatility in any other conversion kit for the price. Sure, if you can stump up an extra couple of hundred, then I’d seriously consider the BBSHD. But, do you need that much power?

Despite some reliability problems, Bafang has been constantly making minor tweaks to this motor over the years. It’s possible to get very high mileage from the BBS02 with sensible use and periodic maintenance.

Apart from some of the electrical issues, my only other complaint would be the pedal assist. This can be fine-tuned using the software, but out of the box, it can have a very on/off feel to it. It’s a shame Bafang didn’t make an upgraded version with a torque sensor, as that would have taken the BBS02 to another level. To date, this feature is only available on their ‘M’ models, which require a special frame for fitment.

All in all, I still love the Bafang BBS02, and in 2022 / 2023, it’s still one of the best e-bike conversion options available and highly recommended!


  • Motor Position: Mid-Mounted (Bottom Bracket)
  • Motor Compatibility: 68-73mm BSA Threaded Bottom Bracket
  • Rated Motor Power: 500 watts to 750 watts
  • Motor Peak Power: 864 watts to 1470 watts
  • Max Torque: 120Nm
  • Rated Voltage: 36-volt or 48-volt (52v Battery Optional)
  • Controller Current: 18-25-amps
  • IP Rating: IP65
  • Price: $350 – $450

Thanks for reading my Bafang BBS02 review. If you have any questions about the Bafang motor, please feel free to leave a message in the comments section below. Or head on over to my BBS02 Forum, where there’s an archive of over 300 posts from the last 4-years.

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  1. I’m wanting to put this system on my boardman mtb, what size chain ring did you use, how many teeth on the boardman you put it on.

    1. Hi Tim,

      I used the 44t chainring on the Boardman. You will need to get a new chain as the existing one will be too short. If you’re doing a lot of off-road riding it would be worth going smaller, maybe a 36t Lekkie Bling ring. This will also improve the chainline a little and help with shifting.

      Let me know if you need any more assistance.


      1. Hiya Tony, thanks for quick reply, did it just bolt straight on with no issues, touching the frame etc was watching a YouTube vid where the fella said he had to fit spacers.

        1. It was a tight fit. The drive-side of the motor was tight up against the chainstay, and there was only enough axle thread on the non-drive side to fit the inner lockring. It did the job though, and didn’t cause any problems apart from occasionally needing to re-tighten the lockring. The gears didn’t shift very well once you got to the lowest two cogs on the cassette. The problem with the Bafang is it’s not really designed for modern MTB frames with boost rear hub spacing. It’s much better suited to older MTBs from the 90s and early 2000s.

          I hope this helps.


          1. Hiya Tony,me again,have found a kit on Ali with 42 tooth chain set and an offset of 18.5mm for a 11 speed sprocket, what are your thoughts on this, or a 36 tooth with no offset, tis quite confusing, I come from an off-road motorcycle background.

          2. Hi Tim,

            A 42t with 18.5mm offset would be good. Is it the kit from Deruiz? They have a good reputation and the chainrings are well-made. 42t would be good as it’s a 1:1 low gear ratio.


          3. Thanks for your help Tony, much appreciated, I’m going to go for it, if if works out I’ve got an old Kona I’ll do another for my son.

  2. Здравейте. Имам 750вата бафанг с 2 батерии по 20ah 48волта.купих си чисто нова карера най нисък клас от хал Форд-Великобритания и монтирах бафанг. 2 месеца каране всеки ден по минимум 100километра и сега започна да ми пада веригата. Мисля че се е разтегнала. Все още нищо не съм сменял по колелото. Утре ще отида да проверя веригата, ако не е от нея, незнам какво ще правя. Видно предавките на капелата са все още в приемливо състояние както и венеца на средното движение. Ако някой има такъв опит, моля да сподели. Веригата пада на всяка предавка. Колелото ми е с 8 венеца на капелата. Благодаря на всички ❤️

    1. You must be working Deliveroo or Ubereats? The Bafang will increase wear and tear on the chain and gear cassette. I would recommend getting an e-bike specific chain like a KMC X9E or a Connex for better chain life. But, even on a normal bike you should be changing you chain every 2500-3500 kms. I ride a regular road bike and usually change my chain every 2500 kms. It is also worth changing the gear cassette along with the chain for optimal shifting performance.

  3. Witam.
    Chciał bym się dowiedzieć, czy mogę jakoś rozwiązać problem terkotania na dwóch największych biegach?Powodem jest prawdopodobnie łańcuch, który na najlżejszych biegach jest za bardzo pod kątem.

    1. Cześć,
      Najlepszą rzeczą, jaką możesz zrobić, aby poprawić linię łańcucha, jest zamontowanie Lekkie Bling Ring, który jest wklęsły do ​​wewnątrz. Wypróbowałem to z MTB z 11-biegową kasetą 11-50 i poprawiło to wydajność przełożenia.

  4. Hi there Tony from a fellow Cornishman! (albeit one living in Yorkshire) First of all thanks for putting together a great website, there’s a wealth of information here.
    So I’m afraid I have another Tongsheng or Bafang question for you.. I’ve just bought a second hand voodoo bizango as a donor bike. Luckily a friend of mine has a tsdz2 motor that is off his bike at the moment and so I’ve installed it on mine to give it a go before I decide which motor to get. His is the 36v 500w version I believe. The main reason for wanting a kit is so I can continue to ride the steep hills around where I live with my 2 kids on the bike, so a fairly heavy load use, and in the future I might get a trailer to take them in and to use for going shopping. I have human powered mountain bikes for fun use and I can’t see me using this bike for proper mountain biking, more gravel roads and lanes. When I rode it today I really liked the feel of the tongsheng kit but I did feel like a bit more power would be great on the hills – we’re in the Pennines and it’s really steep. I only had one kid on today too. So do you think the 48v 500w version of te tsdz2 will feel much more powerful than the 36v or would it be best to just get the bafang bbs02 48v 750w? Whilst I liked the feel of the tongsheng I’m maybe not so worried about how intuitive the feel is and as I’m carrying a load the more power the better? I want to make it fairly easy so we get out as much as possible. Your opinion would be welcome.

    Thanks very much,


    1. Hi Richard,

      You can’t beat the BBS02 750w for hill climbing, it’s way better than the TSDZ2. There’s not a lot of difference in TSDZ2 performance-wise between 36v or 48v. You can easily reprogram the Bafang to make the assist smoother and a bit more intuitive. I always set peak current at 18A (as opposed to 25A standard) and dial back the PAS start current and power ramp-up. Gearing is another thing to consider. If you’ve got the newer Bizango, I think that’s got an 11-42 cassette. I would recommend an 11-46 which is the maximum the SRAM NX derailleur can handle. It will make those really steep sections a lot easier.

      Glad you like the website, if you have any more questions about the Bafang, let me know.


      1. Hi Tony, thanks for the reply. Yes I think you’ve cofirmed what I was already thinking, the Bafang is the way to go. I also took both kids out on the Tonsheng today and whilst I haven’t got my gearing right on the bike yet it did feel a bit weak on the hilly sections. Basically I want to make my life as easy as possible as we’ll get out more. But now I’m wondering BBS02 or BBSHD?

        1. Hi Richard,
          If you are happy paying the extra, it would be the BBSHD every time. It’s more robust, better heat dissipation, efficiency and torque. When I used to convert bikes I’d often fit BBSHDs and limit max speed and dial back the current to 18A, and they’d still pull like a train. Great torque and generally reliable. I have an old customer who is approaching 10’000 miles on his BBSHD conversion from 5 years ago (yellow Voodoo Bizango).

          Regarding battery, a 48v 17.5Ah would be a good choice. I used a Carrera Kraken with BBSHD for a while and would comfortably get 60-70 miles from a charge with sensible use (low assist and pedalling). I would recommend a battery with quality cells – something like Panasonic, Sony, Samsung or LG. For the best batteries, I’d contact Jimmy at – not the cheapest, but his batteries are hand assembled to the highest quality.

          I hope this helps.

          All the best,

          1. Hi Tony thanks for info. I’m thinking a bbs02 might be enough for my needs though the bbshd is very tempting mostly for the longevity of the motor. Do you have any other battery recommendations that are decent but a bit more budget than the one you linked above? Have you come across green cell before?

            Thanks again,


          2. Hi Richard,

            Yes, Greencell batteries are fine, I’ve fitted a few over the years no problems. Another good manufacturer is UnitPackPower – fitted over 100 of their batteries and only had a couple of isolated issues. Wallen Power on eBay are also good. They do a 48v 20Ah with Panasonic cells for around £375.

            All the best,

      2. Also on the battery side, I was thinking something like a 48v 17AH would be a good middle ground? It’ll be mostly used for local run arounds but it’d be good to have some distance capacity too…

  5. I have had this set on my bike for a few years now. I have read everything and I agree with everything. I would just add one more “defect”, which is actually not even a defect. I have also already installed several sets for friends and all of them showed this; Despite the strong tightening of the engine on the hub, after a certain period of time or kilometers driven, the engine loosened, which is manifested by a gentle knocking in one position when pedaling. Then it is necessary to pull down the left crank and tighten the motor in the hub strongly again. It’s been quiet since then. I might add one more thing, absolutely useless brake sensors. It’s logical that when I brake, I don’t pedal. And unnecessary 2 cables. Sure, it’s a safety feature, but not only in my opinion, unnecessary. Cut both cables and do not install them.

  6. Ciao tony ho un problema con il motore praticamente quando arriva a un picco di 1000 W e sui 20 km/h Siri azzera e non ho più assistenza sai darmi un consiglio o una spiegazione di ciò grazie

    1. Ciao,
      Qual è la classificazione BMS della batteria che stai utilizzando? Sembra che il motore si stia spegnendo vicino alla corrente di picco (ampere). Se la batteria BMS è classificata a 20 A continui, si spegnerebbe se l’assorbimento di corrente superasse tale valore. Se si dispone di un cavo di programmazione, potrebbe valere la pena limitare la corrente di picco a 18 A (sul motore) per vedere se fa la differenza.

  7. Bonjour
    Je suis en panne avec un bafang BB02, acheté chez Aliexpress en mai 2022, la prise en charge sous garantie est une galère, je n’arrive pas à avoir un interlocuteur, aliexpress renvoit sur le vendeur (revendeur ) qui ne répond pas, si vous avez un tuyau je suis preneur

    1. Bonjour,
      Pouvez-vous décrire le problème ? C’est peut-être quelque chose de facile à réparer. Certains vendeurs sont meilleurs que d’autres lorsqu’il s’agit de réclamations au titre de la garantie. Aliexpress devrait intervenir, car la plupart des revendeurs proposent désormais 12 mois sur le Bafang. Faites-moi savoir le nom du vendeur, je pourrai peut-être obtenir un autre e-mail de contact pour vous.


  8. Ich rate von Bafang ab, zumindest wenn der Verkäufer Junstar aus Polen ist. Wenn es ein Problem gibt rät man dort zu dubiosen Selbstversuchen und soll an seinen Anschlusskabeln selbst mit Multimetern Spannungen messen anstatt einfach die Artikel zurückzunehmen und selbst zu prüfen. Wenn man beim Messen einen Kurzschluss erzeugt ist der Controller defintiv kaputt. Jeder vernünftige Händler bietet Garantie und nimmt die Geräte zur Eigenprüfung zurück. Bei diesem Händler ist man verloren.

  9. Witam posiadam motor Bafang 48v 750w. Wcześniej posiadalem motor 1000w w tylnim kole.po zdemontowaniu starego osprzętu i podłączeniu Bafang i dokładnym zabezpieczeniu przewodow doszło do ciekawego zjawiska które nie ukrywam mnie zmartwilo.wszystko podłączone wsuwam baterie bidonowa i w motorze obrazu słychać trzas i zero reakcji zero jakichkolwiek symptomów. Czy posiada on jakieś zabezpieczenie w stylu bezpiecznika. Co mogę z tym zrobić i jak samemu sobie poradzić. Najlepsze rozwiązanie to zwrot lecz zapewne przy następnym zakupie może pojawiać się ten sam problem. Proszę o pomoc.

    1. Pod warunkiem, że akumulator został prawidłowo podłączony, wygląda to na problem z silnikiem. Prosiłbym o zwrot, jeśli to możliwe.

  10. Salve, ottimo articolo, complimenti.
    Ho una domanda da fare.
    Nel motore Bafang che ho acquistato,
    da 750 Watts, c’è la sigla del controller
    C 571-14-512, mentre ho letto che dovrebbe essere con la sigla C 571-30-512.
    Mi sapete dire le caratteristiche del mio e le varie differenze? Grazie Saluti

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