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I have inherited a front 26inch wheel with hub motor (see pic). This weighs a little less than five kilos and has a set of three wires and a set of five wires. The hub bears no proud maker’s mark it is just marked CMA040138. Can someone please tell me what the hub is? The three wires are...

Thanks for the ideas on the battery with no voltage – it seems this is an automatic overload shutdown feature of the Battery Management System or Battery Protection System on some batteries and it is alarming. I found that the next day I could simply put the battery on charge which woke it up...

I inadvertently shorted (only for much less than a second) across the charging lines of a 24Volt Lithium battery. There was an impressive spark and I now have no volts across the output lines of the battery so I suppose the built-in BMS has shut me down. Can I reset the BMS? What can I do...