Some motorcycles have alternators. Solid state components have a working range of voltage between the indeterminate condition and burn through. A small battery is used in a computer to maintain a voltage while the power supply is off. Dampening capacitors are used in circuits to prevent spikes in voltage or current. Regulators can control generator output by limiting current to the field windings. Old tractor generators had a cut out switch to do this. A heating element could be used with the LiFePo4 battery to bring it to temperature and act to limit current as well. Time to do some electrical engineering homework.
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