Have a 2012 Jeep Wrangler Rubicon with the Genesis dual battery system. I have two standard Walmart Everstart batteries that are about 2 and 1/2 years old (I know I should be getting something like the optima battery but I won the Genesis system and at the time I just couldn't afford it/I wasn't using it that often).
Over the last six months every so often the main battery will just not allow the vehicle to crank. Sometimes it is after sitting all night, sometimes it is after an hour. As soon as you put it on the charger it goes right to 12.7 volts/indicates good. I took it into Walmart they tested and said it was good. Usually I swap the batteries and then it'll work for a little while and then they'll do the same thing.
Any thoughts on what might be going on? Is there something wrong with the isolator? Both batteries charge, both batteries hold a charge, I've never depleted them so far down that they were completely dead and as soon as I apply a charger of any type they are at full voltage, in fact every time I try to test them I've never seen them below 12v. Is it the type of batteries?
Over the last six months every so often the main battery will just not allow the vehicle to crank. Sometimes it is after sitting all night, sometimes it is after an hour. As soon as you put it on the charger it goes right to 12.7 volts/indicates good. I took it into Walmart they tested and said it was good. Usually I swap the batteries and then it'll work for a little while and then they'll do the same thing.
Any thoughts on what might be going on? Is there something wrong with the isolator? Both batteries charge, both batteries hold a charge, I've never depleted them so far down that they were completely dead and as soon as I apply a charger of any type they are at full voltage, in fact every time I try to test them I've never seen them below 12v. Is it the type of batteries?