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Are speed sensors brand specific? Could I use a generic speed sensor on my Haibike hardseven or do I have to use the yamaha specific sensor. There doesn't seem to be much to them and I'd rather spend £10 than £30 if it just a matter of changing connectors on the generic one.

Desparately looking for a haibike yamaha battery and charger working or faulty.

It's shocking really considering what we pay for these bikes to start with. I've seen an ebay seller that sells generic charger and connector that they guarantee to work with the yamaha batteries. After hours of reading I've actually managed to source the connector they use but I just don't know...

Thank you for the reply. That's annoying. Do you know where I might be able to find a wiring diagram for the motor and battery. I intend to solder my own 4 pin yamaha compatible connector onto my generic charger. I don't like being ripped off by these companies.

I have just purchased a 2nd hand yamaha pw motor and I need to test it. I cannot afford to buy the over priced battery right now and I refuse to pay the asking price for a yamaha charger so I have bought a generic 42v 2amp charger and I just wanted to confirm the wire colours as I intend to...