I wonder if you could put one of these in the back and run it off the 110v outlet.
Soleus 7000BTU Portable A/C
Features And Specifications:
Programmable 24-hour Auto On/Off Timer
Adjustable Thermostat
Easy-To-Read Multi-Color Display
Programmable Remote Control
3 Speed Fan with Oscillation & Auto Restart
Loss of Power Protection
Auto Mode Chooses the Comfort Settings for you
Model: PE2-07R-62
Cooling Capacity: 7,000 BTU/Hr
Dehumidifying Capacity: 50 pts/day
Power Consumption: 910 W (Cooling)
Air Flow Volume: 285CFM
Power Source: 115 V / 60 HZ
Rated Current: 8.4 A (Cooling)
Sound Pressure Level: <40 db(A)
Weight: 62.8 lbs
Dimensions: 12.98” (W) x 22.17” (D) x 27.78” (H)
Refrigerant: R22
Recommended for rooms up to 200 sq. ft.
Of course we would have to take into consideration the increase in the amount of ICE run time to recharge the battery. It would be interesting to see the FE differences between using one of these units or the ICE A/C unit.