[somms]

Eric,

I believe the OP has a 12VDC compatible cooler so he would not necessarily require a DC to AC inverter.

But I would suggest the OP score a 12V battery jump pack as I think a flat 12V AGM is going to happen if the Volt is left powered off with the cooler sapping juice from the AGM all day in Arizona heat!

 

[somms]

Yeah, I have come to the same conclusion. I guess I'll just pick up a separate 12V AGM deep cycle battery to lug around with the cooler for the days I need it. Then I can recharge it once I get home again.

Wow...just googled the Engel cooler website and I had no idea 12VDC coolers could be so expensive but this makes sense since they are actually are just tiny refrigerators!

Although also not very cheap, Yeti or Grizzly are a couple of cooler brands that supposedly will keep ice for 5 days (maybe less than 3 in Az temps). You also wouldn't have to lug a full sized 12V AGM around or worry about recharging it...

 

[somms]

Why not just leave the car turned ON? You'd have to put a rubber band around the button on the shifter to full the car into thinking it was NOT in Park, or it would turn off after 1 1/2 hrs or so. This would be a lot easier; you could lock it and nobody would know it was running, and the the 12v would be kept charged by the DC-DC converter. The measly .3kWh would be negligible for the traction battery.

I have to agree especially since fuel is so damn cheap right now...

Yes, you would have to defeat this 2.5hr auto-off timer thru a simple rubber band or some 'other' method: Pushbutton Mods to Enable/Disable Triple-Honk Vehicle ON Warning and Auto-Off recall