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Please be mindful of the battery wear due to the repetitive engine-shutdown cooling power requirements.
Our batteries have a life of 200-400 capacity cycles, meaning that our main ~100 Ah battery has a total 20 to 40 kAh total battery life output before serious degradation. Any output amps at any time count for the total battery life.
An average cooling run after shutdown (fan + pumps) may be in the 7 to 15 Ah range. If you do this once a day for three years (~1000 days), you will use 7 to 15 kAh of the total battery life - then add to this all the other engine-off battery drains (alarm, BMW server communications, memory modules, etc.)
To mitigate this problem I do the following: every time, upon returning home, I attach a C-TEK 8 Amp battery tender to extend the battery life - and it is also a 30 second procedure preparing me for future EV ownership... ☹️
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