No drop since 6pm yesterday till 8.30am today.
Great !.
I was just having trouble understanding why you thought by the installing the LED lamps in the interior light, how this would produce a condition where it produced a range reduction on your HV pack, that’s all ????.
The low powered LED lights ? consume their power from your 12 volt battery, that is located under the bonnet.
This 12 volt battery then in turn, receives it’s charge from the HV / traction battery located under the car WHEN the car is in the fully booted condition or when the car is placed on charge.
IF ! - anything was left switched on that could pull power from the 12 volt system, it would be this 12 volts battery that would be drained first and not your HV pack.
Let’s say for some weird reason, you had the car fully booted in the ready condition and the door was left open, then the interior lights would be consuming power from the 12 volt battery, correct.
But then this drain would then be having that loss of 12 volt power replaced, by the power in the traction battery.
This would see power / range then reduced from the HV / traction battery of course.
BUT - It would take years before that could resulted in the 12 volt battery becoming flat !.
So, unlikely it’s never going to happen ?.
However, leaving the interior lights switched on over night, will drain the 12 volt battery because the car is powered down and is not receiving any replacement charge from the traction battery.
Sorry, very long winded I know.
But does ANY of this make any sense at all

.
This is why ZS EV owners recommend that if you are sitting in the car with 12 volt electrics running, radio etc.
Then keep the car in the full booted “Ready” condition !.
Otherwise you run the risk of flattening the 12 volt battery and then it will NOT have enough power to boot up the car !.
Now, I hope what I have said above ? makes more sense.
A lot of ZS EV owners ( like myself ) carry a small booster pack for insurance purposes.
All this “Information” overload for the sake of two LED interior light lamps.
Bet your wishing you had never asked now !.