TWO 4 THE ROAD wrote:
Hello:
I have two 6v batteries in my 5er that were installed a couple years ago. Yesterday while cleaning up the rig, I noticed that the batteries were connected in a strange way. the positive from on battery is connected to the negative of the second batteries and the neg of the 1st is connected to the pos of the 2nd. Does this seem right? I haven't had any electrical problems but it just seemed strange.
any comments?
Is this right: Absolutely
What is wrong is your thinking. You do not have "Two 6volt batteries IN the RV. I know that's what they are when you pull 'em out but when they are IN the RV you have two halves of a single 12 volt battery..
So they are wired as below (Equals signs represent wire)
Chassis/ground==== -{6V}+==-{6V}+=== 12 volt to motor home
How does this work.. 6+6 = 12
DO NOT ADD AMP HOURS.. These batteries are about 220 (Give or take a bit) amp hour DEEP CYCLES. but when you add them in this manner they are still 220 you can safely use about half that (a bit over 1KWH)
Now when you wire 12 volt "Jars" together You do it differently but I won't go into that to avoid confusion.
But what you have is a single 12 volt Battery... In two parts.
At least electrically.