As above, no battery management but I see you ignored the advice and went for the smaller battery.
If you have a Vogue or one with lot's of extra's fitted the 920a may struggle a little if it's not your daily driver and/or used for short trips.
Make sure the car shuts down properly before disconnecting, have a cuppa.
Make sure you know how to put the bonnet in service mode.
Oh and dont leave the battery in the boot when you disconnect the battery 🤔. Its not a problem it just means you...