Debbie B

Have another question about the Battery: There are three wires on the output side – please see the picture below I need to know the purpose of the thin white wire. Is it a heat sensor wire or a switch and is it necessary for the operation of the bike. If it is not necessary, then we can refurbish the bike using one of our standard PCM’s with just +ve and –ve outputs. Does it provide a constant voltage output? If so, what is the voltage and could we address the issue by installing a 36V to the appropriate voltage converter?

there is a component I think it's called a fet... been replaced on the board a couple of times but keeps fusing.

My bikes BMS has popped. Battery cells are fine. Anyone have a a solution re. Another BMS suitable for Yamaha motor. Or purchase a new battery- I need to find a supplier who has stock of both items.

Thank you

So the latest is there is a shortage of these batteries worldwide. I emailed Yamaha in Japan who forwarded me to South Africa Yamaha. They are unable to deal with the batteries as they do not have a dealership agreement with Haibike. Haibike still have not sent me any details of having a dealership agreement with any South African importer. So that is a dead end. The large ebike store in London has stock but refused to sell to a non"customer"...you didn't purchase your bike from us...we won't supply you. So the next best is to purchase a generic from France. Anyone tried these? Please comment your experience.

Ahh thanks for that. Will try find him. My husband has an electronic s background and repairs electronic circuits for machinery manufactured in the 80's and 90s...however the new PC board s are mounted differently so many of the chips are "computed" in newer ways which is not his area of expertise. He can manufacture boards with the circuit diagrams. I think he needs to up his game as spending the fortunes on these batteries is not funny. There is going to be plenty of work repairing the BMS systems going forward.

Possibly...however it doesn't make sense when building brands to ignore your customers...

Thank you for hat makes sense. I was wondering if there could be any damage done if the BMS was bypassed completely? There does seem to be a popped resistor on the board..it's now a case of finding the correct size and part to replace it.

I am still waiting for a response from Haibike - almost 10 days with no response. If they are the worlds best MTB as they state on their website one would expect a reply at the very least. At this stage I am prepared to purchase a similar product from China and get it repacked.

We have done all tests possible. It is definitely the BMS system. If someone has a circuit diagram it would really help getting it sorted out.

My bike won't switch on. No batteries available in South Africa. Found something on batteries4pro website. Has anyone used this site and was it legitimate?

Did you ever get a more satisfying response? I have the same problem with my sduro 9...being in South Africa there is no support on a Haibike. It is definitely the PC board attached to the battery pack. Perhaps someone has a diagram?