Originally Posted by ROBERT CROSS
Yes...but don't you need two 6v to make one 12v
it would suck for you to be me.
Batteries are made up of a series of 2 volt cells.
A 6 volt battery has 3 and a 12 volt
has 6 cells. There is nothing that can be done to alter that.
However, when you put batteries or lights as an example, in series, when one fails, they all fail, just like the old Christmas tree lights.
As an example, take 2 100 amp 6 volt batteries, 600 watts each and put them in series. You will have 12 volts at 100 amps, or 1200 watts.
Then take 2, 50 amp 12 volt batteries and put them in parallel. You will now have 12 volts at 100 amps, or 1200 watts.
The big draw back with the two 6 volt batteries in series is when one quits, your done. When batteries are in parallel, when one quits, you remove it, and you still have a source of power.
"IF" 2 six volt batteries was a better deal than two 12 volt batteries, Airstream would have switched to that many years ago.
The odds of power failure with 2 six volt batteries in series, is "TWICE" that of 12 volt batteries in parallel.
Twelve volt batteries are easily found, not so any more with 6 volt batteries.
Go to Costco, and see how many of each they have on display.
Lastly, more than likely a battery will fail when on a trip. With the 6 volts, your done, no matter what you do. Now your trip has a problem, because you will have to search for 2 batteries.
With the 12 volts, remove the bad one, and replace it when you get around to it, perhaps not until you get back home.
The only test equipment needed for the 12 volt battery setup, is a cheap volt meter.