Battery drain overnight

[ATOD_16]

Hey all!
First time caller here lol. I actually have my 2021 Bronco at the dealer, still. I hiked out of the woods in the Daniel Boone National Forest to find my battery dead, and stranded 3 weeks ago.
I am getting a draw that is killing the battery overnight (guessing 3 to 4 hours). Dealer stated to unhook the non factory winch/Leds, even though they only tested at the battery (has a 30 mA draw) . I asked them to look into it further.
The winch and leds have been on for 6 months and never an issue, and the battery does not drain when Bronco is running.
Any thoughts?

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[Ogre]

Are the Winch and LEDs hooked to aux lights or directly to the battery? It could've slowly degraded the battery power over time if you didn't run long, but a decent drive would've taken care of that. You're sure you didn't leave any other lights on? This is why I keep a small jump pack in each car (NOCO boost). My kids have hit the overhead light a few times and not noticing it left us stranded in a hotel parking lot.

 

[ATOD_16]

Lights are on the factory aux switch, winch is direct to the battery. Unfortunately it wasn't the lights. I would have felt better about that easy fix.

 

[Ogre]

Lights are on the factory aux switch, winch is direct to the battery. Unfortunately it wasn't the lights. I would have felt better about that easy fix.

If they're on the aux there's almost zero chance, but even a Winch shouldn't draw if it's not turned on?? I've never had one but I would "assume" it's electronically a dead end unless you turn it on...

And BTW... no battery drains while the vehicle is running unless the alternator is bad, so that's kind of a misnomer.

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