My M820 motor was also bought as an 48V, it came as 36V, only the sticker said 48V.Hi I have a Cef-50
arrived in mid-December with the engine with the characteristics you see in the photo. In the engine you can only find the sticker you can see, no stamped number as in the previous engines. Someone recently received an engine with the same characteristics
I contacted Jean from SZZT to get some information on the speed and firmware since it's an e-road. She tells me that I can't change the firmware because my engine is a 48V and if I do it with Bafang Go+ it stops. I don't see any sticker or punch in the engine that says 48v, do you have any suggestions for me
In GO+ it was also 36V. Since I bought a light carbon frame, @JimLee-Lightcarbon sent my serial number to bafang. Now GO+ only checks for updates for 48V firmware. They must have some kind of register, what serial needs what kind of firmware.
My experience is 43V firmware available on this forum have looong overrun. 48V had much less, almost zero, feels more natural.
I have now gotten used to it, but would prefer less. I still use the 43V to get more out of the battery.
feel free to advise me given your experience is similar to mine
