Is it possible to jump a 6 volt battery with a......

mr matt

12 volt battery ( you guessed it) - or will this be too much for the cars' electricals?

Unfortuantely I left my 55's light s on few a few hours and the battery drained. Was able to push start it, but was wondering if I could jump it with a 12 volt from another car - I had that option at the time, but decided to push the car to get it going.

Thanks

Matt

Riff Raff · Posted: Sun Sep 18, 2005 5:47 pm Post subject:

I may get jumped on for this, but yes, you can do it. Do it fast though as it may cause your battery to boil. Make sure nothing else is turned on in the car, you sit in the drivers seat and have a buddy hook up the cables. As soon as you have contact, crank that baby over and undo the cables!
12V sure makes the 6V starters come to life!

It's probably easier just to push start it though.
_________________
The greatest obstacle to discovery is not ignorance, but the illusion of knowledge
- Daniel Boorstin

'55oval · Posted: Sun Sep 18, 2005 6:30 pm Post subject:

Mr. Matt
I tried that once, 12 to 6v, and blew the side of the battery out. Not pretty.
Steve sjvwc Crying or Very sad

berniedd1 · Samba Member Joined: October 20, 2003 Posts: 155

That's a dangerous move. Don't do it.

EverettB · Posted: Mon Sep 19, 2005 8:28 am Post subject:

The only time I would do that is in an emergency and it won't push start.

If it's at home, put it on the battery charger. If you don't have one - buy one.

If you need to do it, use 2 people:
Hook up the jumper cables to the 12v battery and the other negative side.
Have a friend just touch the positive side to your 6v battery while you crank it.
As soon as the car starts, he should pull the cable away.

I have done it a few times using this method with no problems.
_________________
How to Post Photos
Everett Barnes - [email protected] | My wanted ads
"Water is the only drink for a wise man" | "Communication prevents complaints"
Stop dead photo links! Post your photos to The Samba Gallery!

mr matt · Posted: Mon Sep 19, 2005 9:05 am Post subject:

OK thanks, I was a little nervous about it - sounds like a last resort measure.
Matt

keifernet · Posted: Mon Sep 19, 2005 12:31 pm Post subject:

WM971252 · Posted: Mon Sep 19, 2005 3:58 pm Post subject:

Even better if you start cranking then connect your 12v source.

Rick · Posted: Tue Sep 20, 2005 7:25 am Post subject:

this brings up another question. Couldn't you make a device to step the voltage down from 12 to 6? You could carry it in the car for those situations on the road where the chance of finding another 6 volt car is about nil. Any electrical wizzes out there?

Riff Raff · Posted: Tue Sep 20, 2005 8:28 am Post subject:

No electrical whiz here, but you could use a second 6V battery.
Just have to hook up the 6V batteries in series.
(12V Positive lead hooked to Battery #1 Positive terminal, Battery #1 Negative terminal hooked to Battery #2 Positive terminal, Battery #2 Negative terminal hooked to 12V negative lead)
I had to do this to charge my 6V battery with a 12V only charger. I just hooked up two 6v batteries in series and charged them with 12V overnight.

Carrying around a spare 6V battery is hardly prudent though!

I don't know of any step down devices that could handle that level of current draw.
_________________
The greatest obstacle to discovery is not ignorance, but the illusion of knowledge
- Daniel Boorstin

mr matt · Posted: Tue Sep 20, 2005 5:46 pm Post subject:

Fortunately, I do have a charger that can charge 6 volt batteries. Does help to have one - jyust need to get the dead bug near an outlet Wink

matt

PEPPE · Posted: Wed Sep 21, 2005 1:26 pm Post subject: r

i have done but used to jump the cables in the moment the key is already in the cranking position. when the solenoid is on, there will be less overall voltage in the 6v battery.
use normal cheap cables, big copper cables can cause problems of excessive current

Rick · Posted: Thu Sep 22, 2005 8:09 pm Post subject: Re: r

53 0val · Posted: Thu Sep 22, 2005 8:22 pm Post subject:

Somebody help me out here..........I think you can charge a 6 volt battery with a 12 volt charge. Connect the batteries together start the 12 car......do not start the six volt car.......let the 12 volt battery charge the 6 volt for 5 minuets. Turn off the 12 volt source. d Disconnect the cables and start the 6 volt car. Enough charge should have been transferred to start the car but not ruin the battery. Anybody ever tried this..........or am I way out here? Confused

_________________
"What a fool believes he sees, no wise man has the power to reason away." Dobee, Dobee, Do

Mark Evans · Posted: Fri Sep 23, 2005 5:10 am Post subject:

Levonbenelli · Samba Member Joined: September 28, 2004 Posts: 1171

mr matt · Posted: Fri Sep 23, 2005 5:01 pm Post subject:

53 0val wrote:
Somebody help me out here..........I think you can charge a 6 volt battery with a 12 volt charge. Connect the batteries together start the 12 car......do not start the six volt car.......let the 12 volt battery charge the 6 volt for 5 minuets. Turn off the 12 volt source. d Disconnect the cables and start the 6 volt car. Enough charge should have been transferred to start the car but not ruin the battery. Anybody ever tried this..........or am I way out here?

I'd disconnect the cables to the 6 volt battery - isn't there current still going somewhere? - horn, starter switch...?

53 0val · Posted: Fri Sep 23, 2005 5:10 pm Post subject:

I don't think so, because the voltage regulator isn't working until generator turns over. Confused

_________________
"What a fool believes he sees, no wise man has the power to reason away." Dobee, Dobee, Do

EverettB · Posted: Fri Sep 23, 2005 10:01 pm Post subject:

I'm not sure I would try that but I would definitely disconnect the battery cable to the starter and the ground strap from the 6v battery first.
_________________
How to Post Photos
Everett Barnes - [email protected] | My wanted ads
"Water is the only drink for a wise man" | "Communication prevents complaints"
Stop dead photo links! Post your photos to The Samba Gallery!

maetl · Posted: Tue Nov 15, 2005 12:54 am Post subject:

One of my buddies and I were talking about this, and he said you simply switch the neg and pos connections. IE, pos to neg, and neg to pos.


Hello! Log in or Register \| Help \| Donate \| Buy Shirts	See all banner ads \| Advertise on TheSamba.com

Is it possible to jump a 6 volt battery with a......
Page: 1, 2 Next

Forum Index -> Beetle - Oval-Window - 1953-57		Share:
		Print View

	Forum Index -> Beetle - Oval-Window - 1953-57	All times are Mountain Standard Time/Pacific Daylight Savings Time Page: 1, 2 Next
Page 1 of 2