What does BBSHD, BBS02 & BBS01 stand for?

[Jay91]

I've been trying to figure out what the Bafang drive system names actually mean. What does BBSHD and BBS02 & BBS01 actually stand for on the Bafang motors?

 

[Anton]

The Bafang BBS01 is a 500 watt bottom bracket motor system.

The Bafang BBS02 is a 750 watt bottom bracket motor system (the 2nd version after the BBS01).

The Bafang BBSHD is a 1000 watt bottom bracket motor system. It has a slightly different naming protocol. The "H" means High Torque and the "D" means 1000 Watts in this case (from Bafang's production label that is on all of the motors.)

 

[Bambiopensource]

Bottom Bracket Standard

HD stands for Heavy Duty is what I heard in some random yt video