Power outlets not working on battery power

Another alternative would be to carry a portable generator.

As stated, you need an inverter if not connected to 120v shore power. Inverters can be as small as 100 watts or up to several thousand watts. To run power hogs like a microwave or coffee maker, you need a large battery bank (4+ batteries) and large gauge cables to run from the batteries to the inverter. If you just want to run a small tv, you may get by with one battery and a small wattage inverter. Then you also need a way to charge the batteries (a generator or solar panels).

Cdaddy wrote:
Our 2016 heartland trailer plug outlets do not work when I'm on battery power only shore power. Is there anything I can do to change this?

If you are not plugged in to shore power, the 120vac outlets will not work unless you install an inverter, which "inverts" 12vdc to 120vac

You can add an inverter to use battery power.
Probably need more battery and a method to recharge such as solar panels.
Small 150 to 300 watts is fairly easy for small stuff. For high draw items you need closer to 2000 watts and increases the cost substantially.

They are for 120 volts and not 12 volts. When the trailer is plugged in then you can use the trailer plugs.