Quick question about BATTERY VOLTAGE !!

[Nick_X5]

Does anyone know what the battery voltage should read once the e53 has been woken up?

For instance, let's say you have a fully charged battery and leave the car standing for 48 hours.

Then you unlock the car, open the rear door (turning off the interior lights immediately) and measure the voltage with a multimeter directly on the battery terminals (the spare and boot floor are already removed and the back seats are down for access)

If the battery is a brand new AGM (which mine is) and reads 12.77v-12.75v fully charged, is it normal to get an initial reading after waking the car up much lower than that - 12.60v?

Next you pop the rear door latch with a screwdriver (but leave it open) and wait 20 minutes then read the voltage again and get a reading of 12.67v. Another reading taken an hour later shows 12.72v.

My question is: Is it normal for the car to pull so much current from the battery when you unlock it? Has anyone measured voltage immediatly after waking the car up?

Thanks for the help guys hope this made sense!