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Change of the voltage balance of each cell during the recallibration process

Discussion in 'Inspire 1 Discussion' started by Leszek Kedziora, Aug 11, 2015.

  1. Leszek Kedziora

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    Hi. During the recallibration of the TB47 battery all six cells were showing nearly even level of the voltage (the difference was 0.01V). Then when the voltage was about 3.6V at each cell the difference changed to 0.06V. My question is: Is it normal state?
    Another issue is the temperature. When the Pilot App showed about 32°C at the end of the recallibration the data from FLYTREX shows 57°C. My second question is: Why the App and the Flytrex show different temperature?
     

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  2. barnesois

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    Looking for the answer to this as well. My batteries are new (less than 3 charges) and the voltage drop issue has happened to me (although not in flight), so after the FW upgrade I am in the process of re-calibrating.

    After cycling I am also seeing a split. 4.31V lowest/ 4.36V highest.
    Scared to use these batteries until I see a definitive answer.
     
  3. familyman5821

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    Hi

    I'm having the same issue with a difference in the battery temp and the flytrex temp. I have another thread going because of my voltage changing from green to yellow after takeoff on three batteries. I have just installed the flytrex and am wondering if this might have something to do with it. I have attached some pictures. Did you ever get your issues resolved?
     

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  4. Scotflieger

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    I don't have Flytrex so I must ask if it is battery temperature that it is recording. 57C sounds excessive but what is your ambient air temperature? The GO app temperatures do look a little low if taken after the battery has been running. Even at an ambient temp of 15C I see battery temperature in the range 40-45C. Most cell voltages should be within 0.1V of each other although I have a weak cell in one battery that is 0.18v lower than the rest. I am monitoring that before and after every flight and if I see a decline in that cell voltage or battery performance then I will withdraw it.
     
  5. Leszek Kedziora

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    The difference in voltage is normal at low values. As to the temperature showed by Flytrex I think that it is overestimated by about 10°C.