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by jakedata 1570 days ago
If I were to create such a system today I would take advantage of an inexpensive (~$10-$20) MPPT (maximum power point tracking) solar controller to regulate the unruly DC output of the generator or rectified alternator. It will sweep the input voltage/amperage to find the maximum power production for a given power source. These devices will automatically charge either a 12v or 24v battery and also provide several 2a USB ports for device charging.