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P2 Battery Life drains from 60% to 4% rapidly with only 97 cycles.

Discussion in 'Phantom 2 Help' started by lsnook, Jul 10, 2015.

  1. lsnook

    Apr 7, 2015
    Likes Received:
    I have tried to take care of my batteries by, down to 8% every 20 cycles, storing at 50%, rarely ever flying below 30%.
    Today I had a new experience. Flying along as usual, battery life 60%, and the starts to decend. I was at about 200 ft so had time to react. Up throttle and landed it safely after maneuvering around pine trees and down a hill. Was in panic mode so didn't observe the battery life data during the descent. After landing, I caught the bird and looked at my fps data, battery at 4%!! This is the first battery purchased, 97 cycles, battery life 91%, (recharged to) charge 53%, 3.849, 3.852, 3.850V.
    I then though, maybe it is the P2 acting strange. Flew with another battery, went down to 15% and started to auto land as it should. I did this test twice, the second time with an older battery bought about the same time as the failed battery. This time I did notice that the older battery started to rapidly decline way before it reached 15%. So, with older batteries, I'm not going to take them to low or I might run out of juice fast.
  2. jason

    Oct 12, 2014
    Likes Received:
    Commerce Twp,MI
    I had the same problem with 2 batteries that had less then 30 cycles. When firmware v3.6 came out last Oct there was battery firmware update v2.6 and I updated all my batteries shortly after wards DJI shut that update down. Now i'm still flying with those 2 batteries but of course flight time is down to a little over 10 minutes and they autoland at 14% which is a far cry from 45% and it saved me from replacing them.
  3. robsquad

    Dec 4, 2014
    Likes Received:
    Wolverhampton, UK
    wow 97 ! i got one with 6 cycles and its scrap . correctly stored and looked after.
    2 of the 6 cycles are from trying to recover it.
    still shows 98% life but will only fly 3 mins on it
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