Any harm in leaving the TT plugged in all the time??

I have mine plugged in, fridge running on AC with beer, soft drinks, ice, condiments etc in it year round. It's my man cave next to the garage. I was out there cooking yesterday so not to heat up the house.

I have boiled out a battery on an old style converter years ago so I turn off the battery disconnect now. Turn it on Saturday morning to charge and turn it back off Sunday evening. I have been doing this since 1998.