Battery problems continued...

[Patriot]

Well, my H2 spent three nights on a test unit to see if any modules "woke up" and drained my battery. My HVAC module woke up once but did not drain my battery. Dealer is going to replace just in case...

It appears that H2's may have modules that can wake up and put a drain on batteries. Further, they can wake up and get "stuck on"...or they can get stuck when you stop the engine. No rhyme or reason either....

The GM spec says they should shut down w/in 25 minutes after shutting off engine.

So...GM and I can chase this problem for ever. I see it as a weakness of the design and NOT very reliable.

So I may be leaning to a dual battery set up.

Drty, I spoke with Wrangler NW and they say the install is straight forward. Have you had any problems???

Can I do the following???: Run both batteries when driving around to make sure they both stay charged. Then, when I park, shut off one battery as a reserve in case a module wakes up and drains battery "A"??? Once I get in, try to start on single battery...if dead, switch in second battery??