Originally Posted by 97teg
Ok lets see. You have two batteries and one is isloated right? Ok well since one battery isnt being charged it will be drained relatively fast because there is not as much coming in as going out right? So the second battery dies. But you have another battery to start the car right? So you flip the switch and can still get the car started. Thats all well and good but as soon as the stereo turns on and and starts drawing more power then the alternator can supply it starts draining the starter battery correct? So soon you have two dead batteries and no way to keep them charged.
I am not trying to argue so please tell me if I am wrong or not.
I am going off the diagram found here:
http://www.bcae1.com/battiso.htm
Alright check it out,
When I take an optima battery put it in the trunk I don't connect it to the front. What ya do is get an battery isolator. This hooks up to your alt and splits the power in two balanced loads. One load is sent to the primary battery(front). The 2nd load is sent to the 2nd battery. Now both batteries are able to charge. The isolator will balance 14.4 volts two each battery. With this mod its not possible for the front battery to drain.
Last edited by mishqua; Aug 1, 2006 at 06:47 PM.