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Warpspeed Guru Joined: 09/08/2007 Location: AustraliaPosts: 4406
Posted: 02:31pm 11 Nov 2013
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Less than ideal....
But another completely different way to go about all this is to scrounge an old car alternator and a suitably large electric motor, perhaps from a washing machine, or even a Briggs petrol engine.
Pretty ugly, but it is an ultra cheap and simple way to make a reliable high current voltage regulated 12 volt battery charger.