69_Avion
Sep 20, 2013Explorer
Battery Switch
I only have two batteries currently and they are of different sizes. I use an old battery switch that allows me to choose "off", "battery 1", "battery 2", or "both". I suppose that you could hook up a switch like that and isolate your similar batteries to "battery 1" in parallel, and the Die Hard as "battery 2". I charge mine together, but have it set up that if I'm concerned about it I can isolate them for charging.