DJI Phantom - Battery Temperature is Below 15 Degree Celsius Takeoff Error
The Error Warning
"Battery temperature is below 15 degree Celsius. Warm up the battery temperature to above 25 degree Celsius to ensure a safe flight."
The other day I was flying my DJI Phantom 4 Pro in January in Ohio, it was about 5ºF (-15ºC) and I got a error message that refused to let me take off. The batteries were stored in my car before use and was every bit of 5ºF (-15ºC).
After reading the error message, I put the batteries in my pocket for a while to let them warm up. Not sure what temperature they were after a few minutes, but I put them in my drone and the error message was gone. To be sure everything was alright, I let the drone hover in place for about a minute and sure enough no error came onto the screen.
I learned that the lower the temperature, the less 'strong' the battery becomes and can affect performance of the drone. While the cutoff is 15ºC and I let the battery warm up, I didn't notice any negative affect on performance. You may have different results at lower temperatures. If the battery can not maintain a normal operating temperature, it might be best to come back on a warmer day and not potentially crash your drone due to loss or reduction of power.
The Inspire 2 batteries have heaters on them. Inspire 1 batteries can be warmed with the DJI battery warmer.