Fan by itself is rated at 24-56VDC 0.46A. This fan is the type that can be taken apart and the circuit removed unlike most other DC fans. We were the first to show how to do this back in 2005.
You use the internal circuity of the fan and add two diodes and wires without doing anything else so that this motor will continue to run exactly the same as before, but now you charge up a second battery for free. The benefit is that you can show people this amazing thing with before and after measurements. Also the motor self-starts. You can have us assemble it this way for $40 more. Does not come with tools, glue, or solder. The supper lube is only added to the bearings of the assembled kits.
The second trigger coil option below is not available at this time.