On a Mini4P Atti is only a mode that it goes into when GPS signal doesn't meet minimum requirements - AFAIK it is not manually selectable using the regular controller / software.
However that should not cause you great problems flying indoors IF...
I bet those 16 blinks means something specific, and these warnings are put there for our general safety and benefit, but I have never seen a published list of DJI battery error codes myself.
Personally I would have great difficulty trusting a...
Nice to see that DJI's newest flavour of obstacle avoidance technology is living up to its reputation 😬
Whenever I see a new DJI drone released, I have a three-way bet with myself as to when the first O/A related prang gets reported... sooner...