Issues with 16,000mah battery

Discussion in 'Walkera QR X800' started by florin, Aug 4, 2017.

  1. florin
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    florin New Member

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    Hi ; i have a x800 and i put a 16 000 mah baterry on it. I don't know whi but after 1-2minutes of flight suddenly i loose altitude,despite the fact that my batterry is almost full.

     
  2. bjr981s
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    bjr981s Moderator Staff Member

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    Not surprising. You have 3 potential issues.

    1) Wrong Cell count.
    2) Way too damn heavy.
    3) C rating too low.

    Cheers Brian
     
  3. florin
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    florin New Member

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    I have a new battery tattu 16 000 mah, weight: 1940 g. Is too much load ?
    Thx
     
  4. bjr981s
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    bjr981s Moderator Staff Member

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    What is the cell count?
    What is recommended for the model for battery weight, battery C rating and mah?
     
  5. florin
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    florin New Member

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    i don't know. Walkera x 800 has no support, is a very poor sercices and product.
     
  6. bjr981s
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    bjr981s Moderator Staff Member

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    What is the spec of the tattoo battery you bought. Cell count (voltage) and C rating.

    I will research for you.

    Cheers
     
  7. florin
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    florin New Member

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    Voltage: 22.2 V Capacity: 16000 mA Download rate: 15 C Maximum charging current: 80 A (5 C) Recommended charging current: 16 - 45 A Maximum discharge current: 240 A Dimensions: 185 x 76 x 64 mm Weight: 1940 g
     
  8. bjr981s
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    The standard OEM battery is a 6S 22.2V 10,000mah 10C battery.

    So the Tattu should be close but just a little bit heavier.

    Are you relying on the Devo 10 / 12 etc to advise of low battery warnings Is that how you determine the flight time?

    What voltage have you set the alarm to on the radio?

    It should be 3.6V x 6 = Alarm Voltage of 21.6V the 22.2 Voltage spec of the battery is the nominal voltage. When the battery is fully charged it is at 4.2V x 6 = 25.2V

    Check your alarm voltage setting in the radio.

    Cheers Brian

    p.s. Make that a lot heavier.
     
  9. florin
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    florin New Member

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    Thanks a lot ! Limit alarm 21.6 .The drone fall to the ground at 24 ... i think is the firmware...But where can i find the firmware 1.3?
     
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