Bbsxx controller markings, anyone able to decipher ?

[KirstinS]

Hi all

what do these markings mean on a bbs xx controller ?

Are you able to tell 250/500/750w etc ?

Many thanks

 

[Fordulike]

This may help:

https://electricbike.com/forum/forum/kits/bafang-mid-drives/62145-cr-r209-750

 

[KirstinS]

This may help:

https://electricbike.com/forum/forum/kits/bafang-mid-drives/62145-cr-r209-750

I found that thread too, doesn't help sadly as they just answer based on motor markings not the controller

Thanks for trying though

 

[Nealh]

The top number must denote wattage 750w.
Middle one proabably factory producer.
Bottom is date year 2018- month 03 - day 09, 9610 unit #/batch .

 

[KirstinS]

Ok, full disclosure

Purchased to replace a 36v 500w bbs02b controller

When fitted it behaved weakly, I hooked to a friends laptop via programme cable and it would only go to 20a max

It looks and behaves like a 250/350w controller in every way

the sitting proud of the potting capacitor also looks small compared to a 500w (no photo)

I just hoped this might be evidenced via the markings

 

[wheeliepete]

Just had a look at a spare BBS02 750w i have and the letters/numbers don't indicate wattage/amperage in any way. Does seem you have a 250/350 if the amperage won't go over 20.