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Unbalanced battery after 01.00.0600 update
1057 8 2017-8-27
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Zirconn
lvl.2
Flight distance : 242920 ft
Romania
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Update all my five batteries Monday but flied only two of them. Friday went out to fly again and battery no. 3 was a no go. Red "Cannot take off band" and "Cannot take off due to large battery voltage difference among battery cells." warning. The battery wasn't charged after update so I went home, fully charged it and got the same. Fully discharged it (that took a while) and fully charged it and still stuck with a unbalanced battery.

This battery was not part of the original Fly More pack but it was bought from DJI Store.

Opinions & options ?

Thx
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Screenshot_20170827-175019.png
2017-8-27
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Matioupi
First Officer
Flight distance : 922569 ft
France
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I had the same right after updating to 1.00.600 on one of my 4 batteries :

http://forum.dji.com/forum.php?m ... 1831&fromuid=886782
http://forum.dji.com/forum.php?m ... 1858&fromuid=886782

I  dont know if this is related to new firmware (my guess is yes : they probably have set stricter thresholds... and some batteries just get deprecated from the fact)

I oppenned a case to support. They told me to try to first drain completely the batterie by letting the Spark powered On with this battery, and then recharge it , doing this twice in a row and see if that would solve the issue (hint : it did not).

Now they gave me a UPS return sticker and battery is on it's way. I hope they will exchange it (unless they have special better chargers that could solve this, I know it exists for some non DJI drones and batteries)

at least you not alone :-)
2017-8-27
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Zirconn
lvl.2
Flight distance : 242920 ft
Romania
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Already did the full discharge once and yes, it didn't help. I'll contact support too.

I think the batteries showing this kind of behavior would have caused a power-down and crash before the update. Lucky us.
2017-8-27
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Matioupi
First Officer
Flight distance : 922569 ft
France
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Zirconn Posted at 2017-8-27 07:38
Already did the full discharge once and yes, it didn't help. I'll contact support too.

I think the batteries showing this kind of behavior would have caused a power-down and crash before the update. Lucky us.

I rather believe that the crashs before update were due to some kind of overheating where the CPU/OS stack triggered a thermal safety shutdown.

If there is indeed a new stricter threshold, it's just that they are taking all safety measures they can think about...
2017-8-27
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Kyokushin
Captain
Flight distance : 296378 ft
Poland
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It seems it was the hardware defect of some batteries. Now instead of falling a spark cannot take off and DJI replace battery. Good.
2017-8-27
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DJI Diana
Administrator
Flight distance : 2408 ft

Online

Please try to restart the drone for several times, if it persists, please contact the Support to send the battery in for diagnosis. http://www.dji.com/support
2017-8-28
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Matioupi
First Officer
Flight distance : 922569 ft
France
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update to my similar case of unbalanced batteries :

I just received the confirmation that the battery will be swapped under warranty !
I must say that for once, I've been pleased by DJI support speed and efficiency. Thanks for that DJI !

In order not to let support team rest on it's laurels, I must add this kind of case is pretty simple...



2017-8-30
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TXspark512
lvl.1
United States
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Matioupi Posted at 2017-8-30 22:53
update to my similar case of unbalanced batteries :

I just received the confirmation that the battery will be swapped under warranty !

I just experienced the same after the upgrade.  Followed the instructions here to drain the battery completely and recharge.  Did that and got the same message "Cannot takeoff..."  Have a support ticket open hopefully will hear from them soon.
2017-11-26
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TexasAerials
First Officer
Flight distance : 566952 ft
United States
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I'm curious if people experiencing these unbalanced batteries are charging through the plug on the spark, or with the charge board that comes with the fly more combo.  
2017-11-26
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