No. Probably somewhere around 2 1/2 hours. Much depends on the true specs that are usually not given by the manufacturer.
You lose 5%-10% efficiency though the inverter and only get 75% efficiency from the battery. Then you have to figure the AH rate of the battery figured at a low of 11.8 volts. So, you need to know how many amp hours your battery can supply before if drops to 11.8 volts and your inverter shuts off.
The problem is, amp hour rates are not very useful unless more info is given, and it usually isn't. An AH is supposed to be expressed with the "rate of hours", and most companies leave that info out.
Some of the best power packs with built-in inverters have 28AH batteries that can run a 100 watt light bulb for 2 to 2 1/2 hours.
I have an exact formula for figured actual usefullness of inverters hooked to battery banks, but the formula only works with accurate data to input.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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