WARNING! PHANTOM 4 PRO LANDING WITHOUT WARNING!
WARNING! P4 PRO LANDING WITHOUT WARNING!
If you have just bought the latest Phantom 4 Pro and are using your old Phantom 4 batteries in it, there may be a bug! It may give you a critically low warning at the 30% mark and just land! Without warning and no fly home! My theory is that because the old batteries are 10 - 15% less in power, it has tricked the new unit into thinking that there should be more power and it goes into CRITICAL mode. I'm sure they will resolve this in time with updates....
So what to do?
Even though it goes into critical mode and WILL START TO LAND! You can hold it in the air (with your sticks) and fly home (All the way) It actually still has 30% power left! But it will try and land the whole time, if you let go of the controls. Funny thing is that once it gets past this critical stage, it resets and will give the final 30% reading back! Hope that helps!! Maybe consider a few spare batteries? See also Phantom 4 Pro reviews