Adding two new 6 volts to existing six volts

Dusty R wrote:
Our mh had 1-12 vlot battery maybe 2 years old. I added 1-12 volt battery but put a switch on each battery, then only used 1 battery at a time.

SoundGuy wrote:
Which can even more easily be accomplished with a dual battery switch such as this Blue Sea m-Series 6007 Battery Switch.

rjxj wrote:
Again, though wouldn't it be better in regard to the peukert effect to always run both batteries. While inverting it would be better to run both to minimize the peukert effect. Assuming you are inverting and that's where running 12's is better. But yes, a switch would let you run off one battery if you had a problem with the other.

In our case, we normally camp on electric sites and for that the single G27 I have has been more than adequate. However last year I added a 1000 watt inverter and occasionally use it those few times each season we may find ourselves without shore power to run a couple of 120 vac fans, a toaster, coffee maker, or even my wife's hair dryer. It works well enough but now that my G27 is ~ 8 yrs old it's likely time to replace it so considering my inverter upgrade it's probably now worth the expense to go with a pair of 12 volt G31s that will much more easily support inverter use without excessive voltage sag. Had I considered all this years ago I should have just installed a Blue Sea 6007 in the first place but now that I am planning on running with dual 12 volts it just makes sense to replace the 6006 with a 6007 so I can choose to run both batteries together for more effective support of the inverter or independently if we expect to camp several days without shore power and want to cautiously control our total battery reserve.