Sleeper power outlets shutting off

2014 Freightliner Cascadia.

I sent the truck to the shop several times on this issue. The power outlets in the sleeper and sometimes also in the front shut off after only a few minutes with the truck turned off. The shop adjusted the low voltage disconnect. They checked the battery. They charged the battery. I get it back from the shop, put the key in the off position, and 30 minutes later my sleeper outlets shut off.

The shop just told me that I am putting too much stress on the battery because I have a 130 watt inverter plugged in, and I am also charging my cell phone. It’s normal for the outlets to shut off after “a certain amount of time”

Other truckers tell me these outlets should never turn off no matter what position the key is in.

Can someone please confirm I am not crazy? How do drivers have refrigerators if this is normal?

 

Yes. Company shop. They told me to use optimized idle. Here’s what the truck is doing so far.

5 minutes truck turns off.
10 minutes. Console beeps 20 times.
23 minutes engine starts.
1 hour 17 minutes so far since I turned on optimized idle and the engine is still running.

Power outlets are working.

 

I really don’t think this is normal. All I have on is the bunk heater and my phone plugged in. The truck idles for hours every night. I’m not using the optimized idle control in the sleeper. I just have idle management turned on. It idles between 900 and 1200 rpm every night for at least 3 hours at a time before shutting off for an hour or two then turning back on for 3 hours.

It’s hard to imagine I need to burn 6 gallons of diesel every night to keep my phone charged.

 

Don’t know how old the battery is. It’s my first truck. Company mechanics said they tested the battery and it’s fine. The reason I think it’s not normal is the battery is 5 times bigger than a car battery and there’s no way I’d ever have to idle like this in my car.

I guess it’s not something I should worry about. Company tells me to use idle management; they pay for the fuel. Who gives a #### right? Lol. Don’t send me to California please.