Hi Rafał, just for your information, the operating temperature range is 32° to 104°F (0° to 40°C). Thus like 2# mentioned, 29 degrees Celsius is good.
A little off topic, we have a tutorial about how to fly in cold/hot weather for reference.
KedDK Posted at 2018-6-10 08:01
Just curious as i am, you have the Phantom 3 SE right?
If so i think your avatar has lost it's 3 digit.
The ideal battery storage temperature is 22℃ - 28℃. You can check the battery safety guide below.
BTW, I had forward the issue of the drone's name to the designated team, they will correct it soon.