We are back from a weekend away, having driven the car about 200 miles. The battery us showing 12.9v, ignition off.
I've connected the charger, a "RING" brand device that charges, maintains, repairs and keeps a battery warm in very cold conditions. It is capable of charging at 12A in repair mode.
In maintenance mode it sarges at up to 0.5A.
The battery is new, a Yusa 60Amp device.
There is no tracker or other device and the USB adaptor is unplugged.
When the ignition is off the heated front screen with is partly illuminated for about 10 min before going out.
Also, as soon as the door is opened the footwell lights come on and the seatbelt, hazard flasher and heated screen come on.
The Radio is an Alpine device that does not have any ability to retain station information when disconnected.