Originally Posted by ScottBrownstein
Oops, that is pretty marginal. A CPAP with the humidifier turned off draws about 50 watts, which is maybe 4.5 amps at 12 volts. Throw in a hundred watts for the TV for or 4 hours and you are going to draw down pretty fast. No generator and only charging via the TV will have a hard time replacing that in a reasonable time. My rig is a class A with 4 12 volt deep cycles and a residential reefer. Most of the time I end up using the inverter for the CPAP and a satellite receiver and a TV. Of course, when driving on the road it really doesn't matter since my alternator supplies more than enough power to offset any inverter use.
I would consider adding another 12 volt battery when you install.
I'll run the CPAP without the humidifier, so that cuts 1/2 or more of the power consumption.
There's no satellite and hopefully the Rokus don't draw much.
We'll see. I'm not against another battery- I'm constrained on weight (I'm already running the camper overweight) and the space for it is a right pain in the butt!).
Originally Posted by WolfWhistle
eplenty, what's to scare? size the AC OUT breaker to limit the load if you need to ... the inverter will protect itself... that is not to say kids on gaming devices won't run the battery down. I can set my Magnum to cutoff at a predefined battery voltage to prevent that from happening. Then they sell batteries every day.
It's really a matter of running the battery down with random stuff being plugged in and used. Even before this, if we are actively using the camper- I don't get a ton of time in it. We have upgraded to LEDs all around and I'm hopeful that helps. I'll add a battery if I have to.