I'm confused. There seems different types of dual battery isolators available. Electronic, diode etc. Some only work with external sensed alternators. What does all this mean? I have a TD5 Discovery 2 and a second
100ah deep cycle battery. I would like to hook this second battery up to the alternator for charging when the vehicle is running and automatically switch to the 20 watt solar panel when stationery. I have a solar panel controller. Ideally, I would want the isolator to charge the main battery as a priority before charging the auxillery and prevent drain between the two batteries and then the solar charger to take over but only charge the auxillery when the motor is not running. If this all makes sense, anybody know a good place to start. Steve W (in Aus)- posted
15 years ago