Originally Posted by Overland1
I wonder if, not being in the engine area, batteries in the JGC will (generally) last longer. I need to hang a temperature probe in the battery box of my 2014 to find out the difference in temperature, but I am sure it stays cooler than under the hood.
I was thinking about this as well, and I agree with you. The inside of my garage can easily got over 130 degrees in the dead of Summer. Especially when 2 hot cars are parked inside of it. During that time the under hood temperatures have to be even higher, (140F - 160F+). That's like storing your battery in an oven. It is rare out here to have a battery go over 2 Summers. They'll usually die during the third Summer. Also, out here it doesn't seem to matter what kind of battery you purchase either. A $200.00+ Optima won't last any longer than a Wal-Mart or Auto Zone special on sale.
With the battery under the seat, it has to be at least 30 degrees cooler. And with the A/C running, cool air sinks, helping to keep it even cooler. I can't help but think that will help with battery longevity.