I Have DJI Phantom 4 and purchased a month ago after I DJI Phantom 4 Firmware Update I I have problems on signal "Battery Error" on my P4, where before p4 take off all normal conditions and after the plane began to take off about 30 seconds on the screen DJI Go app shows "Battery Error" and the battery indicator N / A, and when My best best state surviving scaled back indicator Battery normal. I raise again the best "Battery Error" my best again lower the battery indicator in the normal App DJI go again and so on and I've tried 3 battery all the same. What happened ? Help

Hi topex.pex, please make sure you upgraded it successfully since you noticed that error after a firmware upgrading.
You could try to reset it to factory default through Assistant 2 and then upgrade it again.
And you could also try to fully-discharge it then fully-charge it to check whether it's improved.

I have the same error after updating to Version 01.02.0602 and Version 1.8.0 on the RC.
Now battery that was in aircraft during upgrade (lets call it Battery 1) gives me Battery Error (Battery Signal Error). If a change the battery to one of the other two that I have it has no problems. If I put back Battery 1 it starts ok but after 15 seconds it says "Cannot take off" and then changes to "Battery Error" and all four lights are solid red on aircraft. All four cell for Battery 1 are at 4.06V and total voltage is 16.3 and temperature 42C.
Battery 1 has only 18 charges cycles and I used this battery yesterday before upgrade without problems.   
One more thing: during upgrade I started with Assistant and failed twice, had to do it from DGI Go App to successfully complete the upgrade. Maybe those failed tries from Assistant felt battery in a bad condition/status?
Any ideas? Thanks!

I have exactly the same error after updating to Version 01.02.0602 and Version 1.8.0 on the RC. After downgrading to previous Firmware the Battery seems to be ok

Schubi Posted at 2016-11-28 00:56
I have exactly the same error after updating to Version 01.02.0602 and Version 1.8.0 on the RC. After downgrading to previous Firmware the Battery seems to be ok

I read your message and downgraded one version and now there is no battery error and I can fly my P4 Pro.

Glad to hear you got it sorted out by downgrading the firmware.
We're aware of this case as well and working on it now, we'll let you know for any news.
Thanks for you support again!

How soon are you going to release a new firmware? For some reason I can't downgrade, i get a upgrade failure everytime.

fanse9ac2261 Posted at 2017-1-29 03:19
How soon are you going to release a new firmware? For some reason I can't downgrade, i get a upgrade failure everytime.

Have you already tried restoring the unit to factory defaults?

DJI-Jamie Posted at 2017-1-29 23:18
Have you already tried restoring the unit to factory defaults?

no, how do i do that?

fanse9ac2261 Posted at 2017-1-30 00:41
no, how do i do that?

You should see a "Restore to Factory Defaults" button at the bottom of the Firmware section of the Assistant 2 software.

Hello
Problem with battery authentication following v01.02.0304 update of phantom 4 pro
I give the old version v01.01.0203 and I no longer have an error message

is it normal ?
The drone phanton 4 pro is new just 2 vol and the battery 4 charge

Hi, I have the same problem.
The Phantom 4 Pro is new, I had just few flights. After upgrading  v01.02.0304 I can't flight with the original battery that came with the drone  because I have an error.
I have a second new battery (older type 5350 mAh) that after the upgrade works perfectly. What should I do? Do I need to downgrade and wait for a new firmware update or my battery is faulty and I need to send it back?

dear friends please help to find the problem . I also have exactly this problem after upgrading . dji phantom 4. to get battery signal error . please help

DJI-Jamie Posted at 2017-1-30 11:27
You should see a "Restore to Factory Defaults" button at the bottom of the Firmware section of the Assistant 2 software.

ok so i did reset the factory defauts and it didnt change anything. Please advise, do i send the battery back?

fanse9ac2261 Posted at 2017-2-15 10:42
ok so i did reset the factory defauts and it didnt change anything. Please advise, do i send the battery back?

Just to clarify, is this the only battery you have or do you have other batteries that aren't demonstrating this issue?

Alexnef Posted at 2017-2-13 03:47
dear friends please help to find the problem . I also have exactly this problem after upgrading . dji phantom 4. to get battery signal error . please help

Could you answer post #15 as well?

Elanor Posted at 2017-2-8 05:16
Hi, I have the same problem.
The Phantom 4 Pro is new, I had just few flights. After upgrading  v01.02.0304 I can't flight with the original battery that came with the drone  because I have an error.
I have a second new battery (older type 5350 mAh) that after the upgrade works perfectly. What should I do? Do I need to downgrade and wait for a new firmware update or my battery is faulty and I need to send it back?

You could wait for another update to see if it brings back the first battery, but the fastest course of action would be to send the battery into DJI for a potential warranty replacement.

DJI-Jamie Posted at 2017-2-15 13:51
You could wait for another update to see if it brings back the first battery, but the fastest course of action would be to send the battery into DJI for a potential warranty replacement.

Thank you DJI_Jamie.  The battery is the original one shipped with the P4P. I bought it 3 week ago. What do I need to do to send the battery into DJI for replacement? Is there any link to compile a form or something like that? I'm from Italy

Elanor Posted at 2017-2-16 03:21
Thank you DJI_Jamie.  The battery is the original one shipped with the P4P. I bought it 3 week ago. What do I need to do to send the battery into DJI for replacement? Is there any link to compile a form or something like that? I'm from Italy

You should be able to acquire a repair form here:

http://www.dji.com/service/repair

Just to clarify, the battery is replaced via the Repair Center so it won't be 'repaired'. Alternatively, you can email the Europe Support team directly at support.eu@dji.com in order to get all the information you need for a battery replacement as well.

DJI-Jamie Posted at 2017-2-16 10:28
You should be able to acquire a repair form here:

http://www.dji.com/service/repair

I just sent my battery back, thanks

fanse9ac2261 Posted at 2017-3-8 08:24
I just sent my battery back, thanks

Good to hear, you will be up and running again in no time.