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12V to 18V quick connect diagram

Posted: Mon Dec 23, 2013 8:49 pm
by cwbman
Hi, I'm new to forum and its awesome. Do you see any fatal flaws with this diagram? (attached) I'm converting my kid's 12V 9.5ah F150 to 18V (three 6V 12ah) in series. I'm using a 7 pin trailer quick connect to allow charging in parallel at 6V.

Re: 12V to 18V quick connect diagram

Posted: Mon Dec 23, 2013 10:02 pm
by bruces_eviltwin
I think it looks good, NICE concept :!:

Re: 12V to 18V quick connect diagram

Posted: Mon Dec 23, 2013 11:03 pm
by 12vwiz
It looks good to me too.

But don't forget a set up like this will require you to install a fuse at each battery.

Re: 12V to 18V quick connect diagram

Posted: Mon Dec 23, 2013 11:34 pm
by cwbman
Thx for the reminder to add a fuse on each battery

Re: 12V to 18V quick connect diagram

Posted: Tue Dec 24, 2013 9:05 pm
by cwbman
I hooked it all up today. It worked great. My kid loves the 18v and grandma can connect the charger.

Re: 12V to 18V quick connect diagram

Posted: Wed Apr 30, 2014 5:06 pm
by ToXIc
cwbman wrote:Hi, I'm new to forum and its awesome. Do you see any fatal flaws with this diagram? (attached) I'm converting my kid's 12V 9.5ah F150 to 18V (three 6V 12ah) in series. I'm using a 7 pin trailer quick connect to allow charging in parallel at 6V.
how is this setup working for you?

its exactly what i'm looking for thanks for posting this up..

also what size fuses would each battery need?

Re: 12V to 18V quick connect diagram

Posted: Fri Jun 13, 2014 1:25 pm
by skoks21
Do all three 6v batteries need to be the same ah? I have a smaller 6 bolt out of a four wheeler but I don't know if I can wire it up in a series with the 2 6v 9.6ah batteries I have now

Re: 12V to 18V quick connect diagram

Posted: Sun Jun 15, 2014 10:41 am
by 12vwiz
@ skoks21
You should use the same age and ah batteries. A complete new set is best.

@ ToXIc
Using no less than 12gage wiring a minimum 30 to a maximum of 40 amp fuse on each

Re: 12V to 18V quick connect diagram

Posted: Wed Jul 02, 2014 12:25 pm
by Doublebase
Looks good. I will prob go this route.

When you connect the batteries all in parallel to charge do the aH add up? For example, if you have 3 7aH batteries do they now add up to 21aH and therefore a 1Amp charger would take 21 hours to charge all 3 batteries? Or does it stay at 7aH and take 7 hours to charge all 3? Again this is with using a 1Amp charger.

Re: 12V to 18V quick connect diagram

Posted: Fri Mar 20, 2015 1:11 pm
by jcrane82
When charged in parallel, the amp hours would add. So if you had three 6v 7aH batteries wired in parallel, it essentially makes a 6V 21aH battery.

Re: 12V to 18V quick connect diagram

Posted: Tue Jun 30, 2015 12:56 pm
by Dreamkreationz
That is awesome, what I was looking for, now is there a way to connect a High/low switch in there? For maybe 6v to 18v? And say if I wanted to make headlights, where could I connect them?

Re: 12V to 18V quick connect diagram

Posted: Wed Nov 18, 2015 3:30 pm
by brodieb666
Why would this setup require fuses on each battery, as opposed to any other 3- 6v setup?
The batteries are in series, with a total of 18 volts, and as far as I understand with a 3- 6v battery setup usually a fuse is put after the last battery. Why would connecting them through the connector change the need for fuses on each battery?

Re: 12V to 18V quick connect diagram

Posted: Thu Jun 16, 2016 11:00 am
by Csalemka
Very nice setup. Hoping to get this thread going. First time I've really seen a good charging port setup. Going along with the headlight/accessory question. Could an additional circuit be setup to put 2 of the batteries in series and then run those to accessory lighting?

Re: 12V to 18V quick connect diagram

Posted: Thu Jun 16, 2016 10:42 pm
by Suburbancharlie77
I too am saving for later, good find!