Wiring 2 12 volt batteries in series

[tlhdoc]

To wire two twelve volt batteries together is it positive to positive and negative to negative?

[mike4947]

Yes and that is called parallel wiring.

For connecting two batteries together; parallel wiring keeps the voltage constant and doubles the amperage available.
Series wiring (positive to negative) doubles the voltage while keeping the amperage constant.

[Tim5055]

As Mike said, you want parallel (+ to + ; - to -)

Series would be + to -

And you didn't think to look on my web page  

Tis type wiring is not limited to 12v batteries.  Your flashlight probably has two "D" cell batteries.  Each battery is 1.5 volts, and end to end (series) they make 3 volts.  Check the bulb, it is a 3v bulb)

Many folks use golf cart batteries for their RVs.  A golf cart battery is 6 volts, so 2 wired in series would make the 12 volts we need.

[Gone-Camping]

Ditto Tim's advice above. If you wire two 12v batteries in series, you'll have a 24v output, which will likely fry everything that's hooked up to it. Wire them in parallel (pos to pos /// neg to neg)

[tlhdoc]

As Mike said, you want parallel (+ to + ; - to -)


And you didn't think to look on my web page  

Well I thought I had it right.  I just wanted to make sure.  

[chasd60]

Well I thought I had it right. I just wanted to make sure.

Might this be for Blackwoods in Acadia NP?? We will be there  on the 8th or 9th, see ya then!!
 
I bought two group 27 deep cycle batteries too. I plan to leave them in the back of my truck for this trip and just use a good set of jumper cables to hook to the camper.
I ordered a couple of 80W solar panels that won't be arrive til after the trip. I have a nice deep cycle battery charger that runs fine from the inverter in my truck, plan to charge the batteries whenever I am out driving the truck.
 
I have the original group 24 that came with the camper, I'll reattach that when I am gone with the truck.