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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...

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...