"A-B" Battery Switch
A very specific objective here: A little discussion from folks who have asked themselves the same question. First, the context, we have had two batteries for ~20 years and dry camp from time to ti...
Forum Discussion
I could see using a battery switch if you could reasonably run down your battery(s) with no means to recharge when needed and wanted to preserve "emergency" power for those situations.
Otherwise it's commonplace to just plug em in in parallel and fuggetabouit. You said it yourself, you almost never isolated the batteries in 20 years, so unless the situation has changed, I don't see the need.
Example, I have our boat's house battery that runs the amps for the stereo isolated from the starting battery with an automatic relay to preserve that emergency power if needed to start the boat. Camper, if the batteries are run down, fire up the generator and charge em up. Or they get charged (somewhat) while driving as long as the burner in the fridge doesn't blow out.
Otherwise it's commonplace to just plug em in in parallel and fuggetabouit. You said it yourself, you almost never isolated the batteries in 20 years, so unless the situation has changed, I don't see the need.
Example, I have our boat's house battery that runs the amps for the stereo isolated from the starting battery with an automatic relay to preserve that emergency power if needed to start the boat. Camper, if the batteries are run down, fire up the generator and charge em up. Or they get charged (somewhat) while driving as long as the burner in the fridge doesn't blow out.
