I have just done a cold IMU calibration and note that the P3A start up is significantly quicker - seconds rather than a minute or so. However, I have just had a battery error - on both original DJI batteries (in the house - not flying btw). It comes and goes immediately - and am thinking that this has something to do with the battery start up temperature - the room is about 12C. Am I correct - I checked also the DJI App and which said that the batteries were 'normal'. Thanks; just checking.