[johnkalajian]

I recently purchased an inverter and have used it without any problems. Most inverters I have seen recently have an auto shut off feature that turns the inverter off when the battery voltage reaches a low level so as to not completely drain the battery and leave you stranded.

 

[shindog]

Do I have to turn off the inverter about 1/2 hr from home so that the battery can recharge itself? That sounds odd though. Any ideas or suggestions??

That should not happen. Unless you have an alternator problem, your system should charge fine even with accessory usage (i.e.- inverter).
Did you leave any of your interior lights on? That is the most common reason for battery discharges like this.... It's happened to me, and lots of other folks!