how much of a charge will it take to run a tv and xbox

A few hours realistically

 

Yoir truck should have a low voltage warning buzzer.

 

Well considering your break is only 10hrs you most likely won't play more than an hour, unless you want to be the guy that only gets 6 hours or less of sleep every day and swerves all over the road. I got a PS3 and the days I actually do decide to play a game, I only do so for 45 min or less. Your battery should be fine. You could just start the truck every hour or so and get a quick charge if your worried about it.

 

A few of us older GUYS function quite well on 6 hours sleep a night,not everyone needs 8 or 9 hours.

 

True. I feel like gold after about 5

 

Wow. Sorry tough guy. By older you mean 50? Cause I'm not exactly a kid here at 33. Are you putting guys in bold cause you're insinuating im a girl? How bout you go back and read the part about swerving all over the road! If you don't do that THEN I WASN'T TALKING TO YOU!!

 

LOL,tough guy?A little sensitive there.It was a general response to your comment.The bold is a response to your "unless you want to be the guy"portion of your statement.Could really care less what sex you are.

 

59 and wish i slept longer but never sleep more then 6 hours
fortunatly i have an apu now all i need is an xbox

 

I think the real determining factor in how long the batteries will last is dependent on how many batteries and what amperage and reserve capacity that they have and the wattage and duration of your use.

But I could be completely wrong in my assumption too.