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DJI MAVIC PRO "Battery Authentication Failed"

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rvasud2
(@rvasud2)
Eminent Member Customer

Hi everybody,

I have a DJI Mavic Pro battery that otherwise checks OK but when I try to fly it gives me the message "Battery Authentication Failed" and I am unable to take off.

Any advice or help with this matter would be greatly appreciated.

Thank you in advance for your help!

ReplyQuote
Topic starter Posted : 27/10/2023 1:44 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

 Paste NLBA1 BatInfo picture. 

 

ReplyQuote
Posted : 27/10/2023 4:04 pm
rvasud2
(@rvasud2)
Eminent Member Customer

Hi,

I will do that but I have a question, is there a way to connect to the battery to get the information requested without opening the case again?

Also I do not have an NLBA1 I am reading the battery via EV2300.

Thank you!

ReplyQuote
Topic starter Posted : 02/11/2023 2:00 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

Do you have DJI License ?.. 

 

ReplyQuote
Posted : 03/11/2023 5:09 pm
rvasud2
(@rvasud2)
Eminent Member Customer

Yes I do.

 

ReplyQuote
Topic starter Posted : 04/11/2023 3:44 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

 Did you copied the very first initial eeprom ?.. 

 

ReplyQuote
Posted : 04/11/2023 8:33 pm
rvasud2
(@rvasud2)
Eminent Member Customer

No.

ReplyQuote
Topic starter Posted : 06/11/2023 2:08 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

 Read the battery and paste BatInfo page picture. 

 

ReplyQuote
Posted : 06/11/2023 8:52 pm
rvasud2
(@rvasud2)
Eminent Member Customer

Hi, 

Did you see my question above?

Is there a way to read the battery without opening the case of the battery? If not just let me know and I will open the battery again and give you the requested info.

Thank you!

ReplyQuote
Topic starter Posted : 06/11/2023 10:58 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

 Smbus interface located on the Pcb. On the battery connector UART interface is located. These are different ports. Yes, you need to access the pcb to connect NLBA1 device. 

 

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Posted : 06/11/2023 11:42 pm
rvasud2
(@rvasud2)
Eminent Member Customer

OK 

Thank you!

I will open the battery and post the requested screen shot.

 

ReplyQuote
Topic starter Posted : 08/11/2023 3:15 pm
rvasud2
(@rvasud2)
Eminent Member Customer

Hi,

Please find below the required information.

Thank you in advance for your support!

 

Capture
Capture1
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Topic starter Posted : 09/11/2023 5:53 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

Make sure battery is switched Off by push button and LEDs not lit. 

Then go to Smbus tab and send these commands with 5s interval 

Register 0x23 ReadBlock 

Register 0x23 ReadBlock 

Register 0x23 ReadBlock 

Register 0x00 WriteWord 0x0054

Register 0x23 ReadBlock 

Then paste snapshot of the log 

 

 

ReplyQuote
Posted : 10/11/2023 10:52 am
rvasud2
(@rvasud2)
Eminent Member Customer

Hi,

I hope this is the information that you need.

Capture2
Capture3

Thank you!

ReplyQuote
Topic starter Posted : 11/11/2023 2:23 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator
Posted by: @djibattworkshop

Register 0x00 WriteWord 0x0054

 This command was sent not correctly. 

WriteBlock was pressed instead of WriteWord button. 

 

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Posted : 11/11/2023 4:20 pm
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