Hi
I have recently bought a 12v fridge for when I go camping (need to keep the beer cool), Rather than running it off the Landy battery, I would prefer to use one or two old batteries that I have lying around, which I would wish to charge whilst driving and then remove from the vehicle when setting up camp. I would be grateful for your advice on the following:
Where can I get a suitable diode to prevent the spare battery discharging into the vehicle electrical system, rather than the other way around?
If I connect the (discharged) spare battery to the (charged) vehicle battery and/or vehicle charging circuit, what sort of current will be drawn, and hence what thickness of wire should I use to connect the spare battery into the system?
Grateful for your thoughts.
Neil
1983 110V8 CSW