Originally Posted by
drivesafe
Hi eddomak and my isolators do help to extend the operating life span of both the auxiliary battery and the cranking battery. The isolators not only share the load while you are camping and powering your accessories, but my isolators also work in reverse. All other isolators turn off when the motor is turned off ( or turn of shortly after ) but because my isolators are specifically designed to keep the cranking battery and the auxiliary batteries connected, when you start your motor, around 20% of the energy used to start your motor will come from the auxiliary battery. This gives a multitude of advantages. First off, your total available CCA while starting your motor is much higher and this means the voltage while starting is higher and this makes it easier for the starter motor to turn your motor over. ( better starts ). Once started, because your cranking battery has not had to provide as much energy to start your motor than it would need to if starting under the normal single battery setup, your starting battery will not be as low as it would be. Because the starting battery is not as low, means the used energy will e replaced in a shorter drive time, and this helps to reduce the problems caused by continual short trips around around town. Also because of the way my isolators work, your auxiliary battery is always going to be in a higher state of charge than the cranking battery and this has the advantage of when you turn your motor off, again, because my isolators do not turn off at this time, the higher charged auxiliary battery will slowly discharged back into the cranking battery. This one simple operating, over a period of time, progressively brings your cranking battery up to a far higher state of charge than it would normally be in and then keeps it there. All this works to help extend the operating life of your cranking battery. ALSO NOTE, my systems are ideal for use in new LRs with STOP/START operations. Again this is because my systems share the continual starting loads over two batteries.