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  1. Jayfdee

    Apr 22, 2015
    Likes Received:
    Morecambe Bay UK
    First time I have had this, and not too sure of the reason. I turned on my controller and it made a steady regular beeping noise, this continued even after turning on the P4, eventually I got a cold battery warning. After a few minutes and a complete restart the beeping stopped, and the cold battery warning stopped.
    I had stored the backpack in a cold car overnight. The beeping was even before I turned on the P4,is this a low temp warning for the controller?I have not read this in the manual.

    Any suggestions?

    After warming up I had a perfectly normal flight, hitting 30% battery after 21 mins.
  2. alokbhargava

    Sep 28, 2015
    Likes Received:
    San Francisco, CA
    Not sure if someone else had reported this issue earlier but it's good to know that even controllers battery temp is sensed.

    Sent from my iPhone using PhantomPilots
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