This modular coil is intended to be used in motor and generator applications ... but is optimistic the current design could hit 1V/coil given a fully wound coil actually affixed to something ...

How to make 100w Generator from 6V Using motor magnet motor generator 100w 6v battery ...

The charger is based of a relatively simple design, employing a 5.2 HP Kubota 4 stroke motor and a 12v car alternator ... and [Glenn] says that the charger/generator only needs to run about ...