DUAL 6 VOLT BATTERIES

2 x 6 volt batteries hooked in series = 12 Volt.

I use this setup with 220 A/Hr batteries.

Malcolm

I as well use 2 x 6v 220 amp hr Apollo's.....works well for my use with trailblaza fridge & lights etc.......charge via solar, vehicle or 15amp smart charger.


Cheers

It is rare to get two 12V batteries that are exactly equal and one will normally get to charge before the other with the potential of the weaker battery continaully suffering charge which has the potential to cause premature failure of the battery.

Using two 6 Volt batteries gives you smaller voltage working together to obtain the terminal voltage of 12V and is more efficent and gives you greater capacity.

The parallel syndrome and charging deficiency can now be overcome with the use of the new Pro Split R zero volt drop that takes the alternator power and supplies individual batteries or banks with individual charge and control and safeguards.

To get maximum efficiency it is better to buid to a terminal voltage with smaller voltage batteries than use equal termianl voltage batteries that fight each other for charge.

We use 2V 4V and 6V to build banks to a terminal voltage.

Ian

Hang on ..... am I missing something here?

Every lead acid battery is comprised of 2 volt cells connected in series (usually by the manufacturer). 3 cells for a 6 volt battery, 6 cells for a 12 volt battery etc.

So what is the difference between a 12v battery of 6 cells and a pair if 6v batteries of 6 cells. Both are 12 volts, charged together by a 12v alternator and consumed together by 12v loads. Put either arrangement inside a cardboard box out of sight and you could not detect an electrical difference.

So how do you connect these two 6 volt batteries to provide segregated 12v sources for cranking and auxiliary power? And if separated, how do you charge them from a 12 volt alternator source.

I really am confused. Please fill me in.

2 x 6V batteries would normally be better in a fixed environment where you can easily get repalcement batteries. However in Recreational / trailer applications if one battery fails and you are miles from anywhere then you have no 12v at all. If you have 2 x 12V batteries then you have redundancy built in and have half capacity left.

Also I have found that 12v batteries will be 10 - 30 % cheaper for the same watt - hour capacity.

"It all boils down to what can a person afford and are they happy with what they have.

Ian"

And that's the real answer. :)