GordonThree wrote:
Matt_Colie wrote:
It is not a good idea to put 12V batteries in parallel - ever.
What is the reasoning behind this? Many coach are setup this way from the factory, as are boats and even some automobiles (some light trucks with snow plows have two batteries in parallel)
Those that are setup for it have matched batteries. The caution was to not go buy a battery and wire it to the existing battery. If that were going to be the choice the recommendation would be to go buy two exact matching 12v batteries but in that case you would be better off just going with two 6v because you would gain more for nearly the same cost.