There are two problem with this: -It only charges while the engine is running and -The wire size really limits the charge rate.
If you want the charge the batteries fast and reliably, you need an appropriate sized DCDC converter with good voltage regulation and a remote voltage sense. I have been thinking of building something like this to recharge power wheels toys from the motorhome house battery while out camping. It have not been started since the user base has not been interested. How many watts do you want? I was thinking about 150 watts since that is what a cigarette lighter socket should provide. Joe Smalley Rural Kitsap County WA Fiesta 48 volts NEDRA 48 volt street conversion record holder [EMAIL PROTECTED] ----- Original Message ----- From: "Lee Hart" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, October 01, 2002 2:24 PM Subject: Re: charging 24 volts from 12 volts > [EMAIL PROTECTED] wrote: > > My idea was, does anyone make or sell a 24 volt charger for a 12 volt > > car? > > I don't know of one off-hand, but it is very straightforward to do. > > The easiest way would be to add a switch to the 24v electric wheelchair > etc. that rewires the two 12v batteries in parallel for charging. Then, > all you need to do is plug it directly into the car's 12v electrical > system, and the wheelchair's batteries will be charged right along with > the car's 12v battery. > -- > Lee A. Hart Ring the bells that still can ring > 814 8th Ave. N. Forget your perfect offering > Sartell, MN 56377 USA There is a crack in everything > leeahart_at_earthlink.net That's how the light gets in - Leonard Cohen >
