I have yet to see any Apex TT with a factory installed battery disconnect switch.
Not sure why you've continued to put up with a dead battery when it's easily solved by either installing a switch or keep the trailer plugged in.
Allowing the battery to be depleted over and over, will permanently kill the battery.
My disconnect switch cost $6 from Walmart. Took about 15 minutes to install.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC