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Two batteries?
izac - February 3rd, 2009 at 05:50 PM

This might be a silly question but,

i have a 6v '65 type 3 and want to run a 12v radio, can I (is it practical) to run a 12v battery for the radio and the normal 6v for the rest of the car?

cheers

izac - February 5th, 2009 at 11:42 AM

anyone got any insight?

desh - February 5th, 2009 at 12:03 PM

Well....12 volt battery how are you going to charge it up?

Take it out once a week stick it on the bench and charge it?

Seems like a lot of bother just to get a radio,


why not use say an FM transmitter or a connector wired up for an Ipod?


My mk1 golf does not have a radio, so I just use a portable battery powered AM/FM radio,

mnsKmobi - February 5th, 2009 at 12:14 PM

The problem you would have is charging the 12v battery. You can get dc dc converters to step up the voltage from 6 to 12v. However most converters are to step down from 12v. I found one 6v to 12v but it was US$375! There are a number of simple circuits online that you could build or get someone to build for you.

desh - February 5th, 2009 at 01:44 PM

Another idea would be to use something like this to charge the battery up:


http://www.jaycar.com.au/productView.asp?ID=MB3501&CATID=18&keywords=...

alien8 - February 5th, 2009 at 04:05 PM

Maybe talk to a good auto electrician for some ideas. The step up transformer sounds simple but ,yeah, cost.

izac - February 5th, 2009 at 04:50 PM

thanks for the ideas guys. yeah i will have to have a talk to an auto electrician...

but in the meantime, i had another idea...

would it be possible to run 2 6v batteries connected together, one going to the engine and fuse board and the other going to the radio... would that make 12v's for the radio? would this work?

any other ideas ?

cheers

68AutoBug - February 5th, 2009 at 09:09 PM

Quote:
Originally posted by izac
This might be a silly question but,

i have a 6v '65 type 3 and want to run a 12v radio, can I (is it practical) to run a 12v battery for the radio and the normal 6v for the rest of the car?

cheers


I was told a few years ago, that a fellow with a 6v kombi had a 12v transistorised car radio and what He did..
was he bought a 6 volt lantern battery and used that to get the 12 volts for the radio... connected in series..
He said He sold the Kombi a few years later and the same lantern battery was still working.... lol

You would need to make sure the radio was NOT earthed.
not sure How he did that....
as earthing the antenna usually earths the radio too...
usually... maybe not all of them...

LEE



-6v +6v -6vL +6vL in series..

desh - February 8th, 2009 at 02:17 PM

Maybe something like this would be the best option?

http://www.thesamba.com/vw/classifieds/detail.php?id=572244