Bafang M500 and M600 motors
- Thread starter Rob Rides EMTB
- Start date
Waynemarlow
E*POWAH Elite
I think the poster was talking M600 rather than M500 ? My M600 motor running a 52 volt battery will give if the App data is correct just under 22 amps, which mine will momentarily pull. 58volts x 22 = 1276 Approx.
The display I have has the W’s display so small as to be useless from anything other than an elbow length, but the App will display as an analogue 1Kw and you can pull it into max readout pretty easily. You can also display amps from where I’m getting the 21.9A I have seen. Even at 20 amps is approximately just under 1.2Kw
So at a fully charged 48 volt battery ( 52.4 ) can we expect around 52.4 x 21.9 = 1150 W’s but that is so dependent on uncalibrated displays and firmwares. Next time I’m out I will put a reasonably accurate logger I have on it and report back.
M600 is 48V, its running on 18Amps, it means 54.6V (fully charged) * 18A = 983W.
For 43V its 20A and its mean 50.4V*20A=1008W
For 36V its 25A and its mean 42V*25A=1050W
M500 is different case, by the default 36V version is on 15 Amps and recent one on 17Amps. The 48V is by the default on 10A and we have version for 13A what means on fully charged:
for 36V: 42V*15A=630W or 42V*17A=714W
for 48V: 54.6V*10A=546W or 54.6*13A=710W
There is also 43V M500 but i do not know the Amperage for it.
For 43V its 20A and its mean 50.4V*20A=1008W
For 36V its 25A and its mean 42V*25A=1050W
M500 is different case, by the default 36V version is on 15 Amps and recent one on 17Amps. The 48V is by the default on 10A and we have version for 13A what means on fully charged:
for 36V: 42V*15A=630W or 42V*17A=714W
for 48V: 54.6V*10A=546W or 54.6*13A=710W
There is also 43V M500 but i do not know the Amperage for it.
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Eclipse MTB
Member
Can anyone with either of these motors tell me if you have pedal creep? I’m shocked when I noticed a couple of weeks back, that if I rest my foot on the pedal when it’s between 2-4 o’clock while at stop/standing still, the pedal moves down ever so slightly without the bike moving at all.
I’m not sure if there’s a problem with the torque sensor body. Anybody else have this issue?
I’m not sure if there’s a problem with the torque sensor body. Anybody else have this issue?
ornias
Member
You can run on 52v if you limit charge to 58v (on the top of my head), which is 58*22=1276 ;-)
Hi all,
Just an update on my situation and experience so far with the M600. I've had a problem where the display shows the incorrect speed. Mainly when pedalling up steep inclines, which leads to the motor showing that I'm riding at 60km/h (or similar) and the pedal assist cutting out. I sent my original message at the beginning of June, Melody got back to me and said Bafang had advised that I need a new motor and I would have to pay for shipping (circa 100$). I need to wait until Dengfu receive the motor and then they'll forward it to me.
On the 12th of August I got another message from Melody saying, Bafang have said I need a new controller (motherboard inside the motor type thing) and not a whole new motor. I no longer need to pay shipping.
The new controller arrived on the 18th of August and due to weather / lack of time I wasn't able to install the controller for a week or two. I installed the new controller and it's actually made the problem a lot worse. Not only does the pedal assist cut out more often, but there's also a very violent 'shuddering' that happens when I start to pedal or when I use the throttle. It's currently unusable and quite frankly dangerous. I also seem to notice the battery doesn't last as long, but I've only been out a couple of times so I may be imagining that.
I've message Melody again a couple of times and she's assured me that Bafang are analysing the issue and she'll get back to me.
The saga continues...
Funfunfun
Member
Had similar issue and simply moved the sensor detector which resolved that issue
I hv replaced the magnet with a cheap plastic type and works so much better. The original one is too close to the receiver. You need at least 10 to 14mm gap.
Funfunfun
Member
Also the position of the magnet receiver unit (on the frame)is critical and by just moving that unit a cm makes a massive differnce.
Dun think you can move it forward, aft, up or down..only rotate..as the bolt is in a fix position. But you are right it needs to be absolutely level.
Funfunfun
Member
You are right..i moved it slightly up and it fixed my issues as you described.
A few people have suggested this is the problem and I've spent hours trying different permutations of magnet placement, different screws, distance between sensor and magnet. I'm pretty certain the problem I have is deeper than this, but I'll try again. What do you mean by cheap plastic magnet? Could you send me a link to what you mean please. I'd be most grateful.
It also seems the violent shuddering is as was mentioned above, due to the lack of calibration after a controller change. I don't have the BESST tool or a login, so I'd need to send my motor to Poland for it to be calibrated. Does anyone know if I were to change the controller back to the original, would it still need calibrating?
the calibration need to be done with the controller installed on the motor. If you have a doubt on your initial controller, why you want to reinstall it ? May be the failure come from other items (sensor/wire/connectors ?). We are several to have had this false speed mesuring (with M600 only it seems ?), everybody have solve it with different action around sensor, may be it is only one more time one problem of connectors insertion ? may be it is your printed circuit who support the connectors in the motor ? If you return the complete motor to service center, they could solve your problem.
Thanks for the photo @dvng
Since this new controller has only made the problem worse, I figured I can install the original controller and hopefully get rid of the shuddering that occurs without having to calibrate. I have messed around with position of the magnet, sensor and types of screw for hours on end, which makes me think that my problem, although similar in symptom, is caused by something else. That said, I'm going to try the magnet that @dvng recommended above and see if that helps.
Perhaps, the solution is to send it to the service centre in Poland and see what they have to say.
Since this new controller has only made the problem worse, I figured I can install the original controller and hopefully get rid of the shuddering that occurs without having to calibrate. I have messed around with position of the magnet, sensor and types of screw for hours on end, which makes me think that my problem, although similar in symptom, is caused by something else. That said, I'm going to try the magnet that @dvng recommended above and see if that helps.
Perhaps, the solution is to send it to the service centre in Poland and see what they have to say.
You need little computer skill to set up a bafang BESST login. The BESST tool is +- 150 euro. From then it wil be possible to also alter max speed and update firmware yourself. But it wil be a qamble if calibration wil fix your problem.
If you ship it to Poland. Make sure you discuss the case clearly before you do. Bafang could say it’s no guarantee because you swapped the controller by yourself. Would not be nice if they charge you big money afterhand that you did not count on.
If you ship it to Poland. Make sure you discuss the case clearly before you do. Bafang could say it’s no guarantee because you swapped the controller by yourself. Would not be nice if they charge you big money afterhand that you did not count on.
RyeNiel
Member
Hi. How long does an average e-bike motor last? Is there a maintenance you need to do every so often? Thanks guys.
markvanhaze77
Member
I am having a weird issue on my M600 and before I take it apart, I just wanted to ask if anybody had a similar problem. Sometimes when switching from 0 to 1 or back on the power settings, I have no engagement of the pedals whatsoever. Its as if the clutch did not engage and im just spinning the cranks without any connection to the chain.
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I have two M600 controllers, and i like to have a M500 controller to have less power at PAS1, and it's only possible with M500.
It's possible someone wants more power than M500, It's a upgrade for them.
Or someone know where to buy the M500 controller at a good price?
Thanks
It's possible someone wants more power than M500, It's a upgrade for them.
Or someone know where to buy the M500 controller at a good price?
Thanks
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Řídící jednotka pro Bafang M500 – ELEKTROKOLA ZLÍN
Řídící jednotka pro Bafang M500
elektrokolazlin.cz
"We do not have the goods in stock. ".Řídící jednotka pro Bafang M500 – ELEKTROKOLA ZLÍN
Řídící jednotka pro Bafang M500
At this time, exept luna from US for M600 controler with very expensive shipping cost to EU. I have never finds supplier for controler. I'm curious to have a return of "real" purchaser of an spare controler of M500.
Waynemarlow
E*POWAH Elite
Running a 52 volt battery ( 58.4 volts fully charged ) and had been advised that the M600 would throw up an over volt error code if the voltage was over 58 volts. I had been simply discharging the battery for a couple of minutes and fitting it at or around 58 volts. Yesterday I forgot to discharge it and fitted it, no error codes and working as normal. I'll report back in a couple of weeks of fitting a fully charged battery. 
Running a 52 volt battery ( 58.4 volts fully charged ) and had been advised that the M600 would throw up an over volt error code if the voltage was over 58 volts. I had been simply discharging the battery for a couple of minutes and fitting it at or around 58 volts. Yesterday I forgot to discharge it and fitted it, no error codes and working as normal. I'll report back in a couple of weeks of fitting a fully charged battery.
I've had the same experience. No problems being slightly over 58v.
Baja Rick
New Member
So I just finished building and riding my new Cheeb withM600 motor. I have owned a Shimano E8000 for several years and I am right now disappointed with the M600 by comparison. The M600 seems to provide too much power when I do not want it , and not enough when I do. The Shimano and a Bosch I tested today both seem to respond to my pressure input and deliver back some extra power when I really load up the system with pedal pressure and slow down the cadence a bit. The M600 seems to rely primarily on cadence to deliver its power, so I need to get in a very low gear at times to maintain high cadence and then when I clear the tough spot, the motor surges and provides too much. Is there a way to modify the programming to help deal with this issue?
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