Fuse 28 drains battery overnight

[bme30]

After reading Bentley service manual, it says fuse 28 is for cigarette lighter and power antenna.

Is it normal for cig lighter plug stays on (hot) at all time, even the ignition is off?

My power antenna is not working and unplugged.

What's the secret?

[kuantings]

Yes,
The cig lighter is "always" on even when the ignition is off.
Make sure you have no electronic plug-in draining battery power!

[Mikhail Bakunin]

Yea. My phone charger drains my battery eventually. They all do.

[StereoInstaller1]

After reading Bentley service manual, it says fuse 28 is for cigarette lighter and power antenna.

Is it normal for cig lighter plug stays on (hot) at all time, even the ignition is off?

My power antenna is not working and unplugged.

What's the secret?

You may want to actually unplug your lighter, see if really is the cause.

What have you done for diagnosis?

[Mikhail Bakunin]

Yo G. It's the charger. That's it. Plus I bet your battery was weak to begin with. I bet it's toast by now. Will it hold a charge?