Car Alternator used to charge batteries

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Subject Author Date Car Alternator used to charge batteries SteveC 03-03-2008  Re: Car Alternator used to charge batteries Morris Dovey 03-03-2008  Re: Car Alternator used to charge batteries Ray King 03-03-2008  Re: Car Alternator used to charge batteries Ulysses 03-03-2008  Re: Car Alternator used to charge batteries Todd 03-06-2008  Re: Car Alternator used to charge batteries markkate 03-06-2008  Re: Car Alternator used to charge batteries Todd 03-07-2008  Re: Car Alternator used to charge batteries Ulysses 03-07-2008  Re: Car Alternator used to charge batteries markkate 03-08-2008  Re: Car Alternator used to charge batteries Ulysses 03-10-2008  Re: Car Alternator used to charge batteries Ray King 03-06-2008  Re: Car Alternator used to charge batteries Ray King 03-06-2008  Re: Car Alternator used to charge batteries Todd 03-07-2008  Re: Car Alternator used to charge batteries Ray King 03-07-2008  Re: Car Alternator used to charge batteries Todd 03-08-2008  Re: Car Alternator used to charge batteries Ray King 03-12-2008  Re: Car Alternator used to charge batteries bealiba 03-03-2008  Re: Car Alternator used to charge batteries Ulysses 03-03-2008  Re: Car Alternator used to charge batteries Ulysses 03-04-2008  Re: Car Alternator used to charge batteries Eeyore 03-03-2008  Re: Car Alternator used to charge batteries s_sus 03-04-2008  Re: Car Alternator used to charge batteries z 03-04-2008  Re: Car Alternator used to charge batteries Ulysses 03-04-2008  Re: Car Alternator used to charge batteries Classic-Car-Wor... 03-05-2008  Re: Car Alternator used to charge batteries clare at snyder dot ontario do 03-05-2008  Re: Car Alternator used to charge batteries z 03-06-2008
Posted by SteveC on March 3, 2008, 10:25 am Please log in for more thread options if you could somehow power a car alternator to run, could you charge a bank of batteries somehow? Like using solar power to power an electric motor, which in turn, turns the alternator which charges up the batteries? Time to hit the junkyard for a couple of cheap alternators for an experiment!! Posted by Morris Dovey on March 3, 2008, 10:18 am Please log in for more thread options SteveC wrote: > > if you could somehow power a car alternator to run, could you charge a bank > of batteries somehow? Like using solar power to power an electric motor, > which in turn, turns the alternator which charges up the batteries? Eh? Too many steps! Just use your solar power to charge the batteries. > Time to hit the junkyard for a couple of cheap alternators for an > experiment!! Have fun! -- Morris Dovey DeSoto Solar DeSoto, Iowa USA http://www.iedu.com/DeSoto Posted by Ray King on March 3, 2008, 11:53 am Please log in for more thread options Steve, Car Alternators can be efficient but a major modification is needed first. The field is about 3 amps. 3 amps times 14 volts is 42 watts. You have 30-42 watts to satisfy before you can push any current into a battery, so replace the rotating field ( removing the brushes also ) and replacing the field with a donut magnet. You may not have quite as much current but you start off with a much more efficient generator. Ray > if you could somehow power a car alternator to run, could you charge a > bank of batteries somehow? Like using solar power to power an electric > motor, which in turn, turns the alternator which charges up the batteries? > > Time to hit the junkyard for a couple of cheap alternators for an > experiment!! > Posted by Ulysses on March 3, 2008, 4:11 pm Please log in for more thread options > Steve, > Car Alternators can be efficient but a major modification is needed first. > The field is about 3 amps. 3 amps times 14 volts is 42 watts. You have 30-42 > watts to satisfy before you can push any current into a battery, so replace > the rotating field ( removing the brushes also ) and replacing the field > with a donut magnet. You may not have quite as much current but you start > off with a much more efficient generator. > > Ray Do you have any sources for a donut maget that'll fit an alternator? I've had no luck while searching for one. > > > > > if you could somehow power a car alternator to run, could you charge a > > bank of batteries somehow? Like using solar power to power an electric > > motor, which in turn, turns the alternator which charges up the batteries? > > > > Time to hit the junkyard for a couple of cheap alternators for an > > experiment!! > > > > Posted by Todd on March 6, 2008, 1:40 pm Please log in for more thread options > Steve, > Car Alternators can be efficient but a major modification is needed first. > The field is about 3 amps. 3 amps times 14 volts is 42 watts. You have 30-42 > watts to satisfy before you can push any current into a battery, so replace > the rotating field ( removing the brushes also ) and replacing the field > with a donut magnet. You may not have quite as much current but you start > off with a much more efficient generator. > My mileage differs. For three years I've been charging a bank of 10 car batteries with a standard car alternator driven by a small (4KW) diesel burning waste vegetable oil. The armature current is .7A at 3.3V or a little over 2 watts. Rather than use the alternator's charge controller, I use my solar panel charge controller (both for my PV panel and my alternator ... against the controller manufacturer's guidance ... thus with a void warranty). I've done it for three years now. The batteries have a 6 year warranty and cost $64 each. The alternator came from a junk yard at $10. The charge controller cost about $175. Todd Marshall Plantersville, TX Similar Threads Posted 8 pv panels charge this car in a day September 12, 2008, 9:58 am Small homemade charge controller April 12, 2008, 3:52 pm NEWS: Stanford's nanowire battery holds 10 times the charge of existing ones January 4, 2008, 9:14 am Using an alternator as a motor September 2, 2008, 12:35 pm aux power alternator from steam from exhaust? April 17, 2007, 11:59 am Re: Car alternator wind mill generator? August 27, 2007, 8:38 am Re: Car alternator wind mill generator? August 27, 2007, 9:16 am Re: Car alternator wind mill generator? August 27, 2007, 1:24 pm Re: Car alternator wind mill generator? August 28, 2007, 2:45 pm Re: Car alternator wind mill generator? August 28, 2007, 8:42 pm