Bafang m820

Freda

Member
Feb 5, 2023
93
92
Vaasa
Will it fit to the frame?
Well it is probably maximum, but posted in other thread this: LCE930

Basically a tape wrapped battery without case, bms needs to go somewhere also. It needs to be a tight fit or have some kind of fastenings to stay in place. Your idea would probably be a more safe option and still lighter then oem battery.

I still don't undestand the can bus connection. If you make custom battery without that and it works, then why they use the can bus in the first place?
 

brbr

Active member
Dec 28, 2022
463
243
France
Hey Guys, the motor vendor proposed me the besst tool for 100usd, it seems to be a good price, what do you think?
 

LAnton

Active member
May 12, 2022
476
385
Russia
The second motor has a different firmware. What has changed?

М820 Зеелный .jpeg М820 - 2.jpeg
 

LAnton

Active member
May 12, 2022
476
385
Russia
If the 20% battery charge limit is removed there, then this is good. I will be able to check it after assembling the bike
 

mike_kelly

Well-known member
Subscriber
Aug 11, 2022
864
702
US
It is the point the BMS decides the battery is too low to continue without damaging the battery. So it turns it off.
 
Last edited:

LAnton

Active member
May 12, 2022
476
385
Russia
The motor reduces power by less than 20%. It seems to me up to 30-40% of the motor power. It is very annoying when there is a spare battery in the backpack.
 

brbr

Active member
Dec 28, 2022
463
243
France
I should finally receive my motor soon, custom clearance in progress! for the battery, I'm still waiting a date tho...
If it's in 2/3 weeks I can wait, if it's more, I'll go DIY
 



Dado

Active member
Jun 28, 2022
559
400
Bratislava
Guys, 1am I the only one with the direct mount and not the chainring spider?
View attachment 118210


Seems like steel teeth. :( Thats unlucky they do not sending spider, where u can mount good alu wide narrow chainring.

How is outer ring mounted to spider? Some screws from the back? Or just pressed?

Please put it on a scale. That spider seems to me quite massive.
 

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