Ignore them, it will, for 90% of typical usage.
The catch is if you run it a really long time, like 2 hours. The small wire running from the lighter socket to the Thor can only supply about 4-6 amps from the car battery so some of Thor’s internal battery is being used at the same time. It will actually run forever, but get dimmer as time goes on until the only power to the lamp is supplied by the lighter socket wire.
You could get a heavier wire from the battery and a beefier connection and it would run at full output for as long as the car battery has juice or the car is running.
Again, unless you’re running it constant for about 2 hours I don't see any problem.