Notifications
Clear all

Does anyone have information on DJI Inspire TB47, TB48 batteries?

Cire3
(@cire3iseric)
Eminent Member Customer

Does anyone have information on this ? I'm part of the SRT team here and I have a fleet of DJI Inspire 1 V2 Batteries and was wondering if anyone has tried this or knows how to setup ?  We are now adding Mavic and would be happy to post finds on them as well. I know a big part is the batteries getting out of balance. Can this fix this ?

 They are getting ready to discontinue the Inspire 1 V2 and we may have to pillage cells from batteries to make good sets.  It would be great to find this out, or I would be happy to post my information I have 🙂

 

We are now adding Mavic and would be happy to post finds on them as well.

Quote
Topic starter Posted : 04/02/2021 8:43 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

   Welcome to the forum!

This drone section is very new here so there is still no content available. But in future we plan to add some tutorials on how to balance, fix or even recell DJI drones batteries and produce double-capacity battery mods. Also in long perspective we plan to release software to reprogram DJI batteries management chips. So repacking works could be done properly and battery report correct SoC to the drone. All is step by step.

Posted by: @cire3iseric

I know a big part is the batteries getting out of balance. Can this fix this ?

Yes, while Dji Mavic Pro battery uses 3 cells, Dji Inspire one has 6, so unbalancing is a real issue there especially when battery is not new or was stored for a long time.

Luckily in some cases it could be rectified by opening top cover and individually balancing each cell with Lab Supply or RC-balancer.

 

 

ReplyQuote
Posted : 05/02/2021 12:16 am
Cire3
(@cire3iseric)
Eminent Member Customer

@djibattworkshop I'll try to get the information together I have so far on these batteries.   Do you have a source for the individual cells ?  I'm working with a company that works with companies in Japan to contact the manufacture in Japan in hopes of getting individual cells. What I have found is they have little to no interest in working with Americans....lol

 

 Hopefully we get this section rocking

ReplyQuote
Topic starter Posted : 05/02/2021 3:49 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

 The cells used in all DJI batteries are of custom design. Specifically produced for DJI by Chinese ATL Company. Some factory uses LGC or CosLight cells. Most of the batteries use LiPoHV cells with 4.35 and 4.40V at full charge. So they could not be one2one replaced with standard LiPo 4.2V cells even of similar size.

 There are although some Chinese factories that produce copy-cells for Dji drone batteries, but their performance not so good as authentic cells. You could find it on AliExpress or Taobao platforms.

 

 

ReplyQuote
Posted : 06/02/2021 12:24 pm
Cire3
(@cire3iseric)
Eminent Member Customer

@djibattworkshop

 I assume this company would not sell this configuration of battery now that DJI isn't manufacturing them ?  I have re-celled a couple with known good cells when I have a few go bad.

 

 Lots of cash invested in this bird 🙂

ReplyQuote
Topic starter Posted : 07/05/2021 3:46 pm
Cire3
(@cire3iseric)
Eminent Member Customer

 Ok, found replacement cells. Do we know how this hooks up to the NLBA1 ?  I also got a connector to plug right in the PCB of the TB47

This post was modified 1 week ago by Cire3
ReplyQuote
Topic starter Posted : 14/10/2021 6:59 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

TB47 battery communicates with drone using UART interface, it cant be connected to the NLBA directly.

Also this battery is of 6S configuration with 26.2 volts at full charge. NLBA1 does not support it for analyzing.

What you could do is to Unseal it using NLBA1 Reset plugin then connect to bqStudio to reprogram for new cells.

SMBUS port located on the PCB and marked as SMBC, SMBD, GND there.

DO NOT connect Vbat wire from Nlba1 to prevent damage to device!

Ensure battery is Off before connection to prevent interference from msp430 MCU which sits on the same bus.

 

ReplyQuote
Posted : 14/10/2021 8:21 pm
Cire3
(@cire3iseric)
Eminent Member Customer

Connect it with batteries disconnected? Or just turned off?  I know it doesn’t charge those cells 🙂

 

bqStudio is new to me, I’ll google it up.

ReplyQuote
Topic starter Posted : 16/10/2021 12:00 am
DjiBattWorkshop
(@djibattworkshop)
Member Moderator
Posted by: @cire3iseric

Or just turned off?

Just turned off by the button.

Cells should be connected.

After replacing the cells chip normally goes to Hibernation mode, so it first should be Waked Up.  This should be done by Dji Charger, not by NLBA1.

Posted by: @cire3iseric

bqStudio is new to me, I’ll google it up.

It requires special programming adapter EV2400 from Texas Instruments.

 

 

ReplyQuote
Posted : 16/10/2021 10:53 am
Cire3
(@cire3iseric)
Eminent Member Customer
Cire3
(@cire3iseric)
Eminent Member Customer

Also, I did re-cell a TB47 and fly's well without having to do anything with it.

 

 However I do have one with an error I would like to repair.

ReplyQuote
Topic starter Posted : 16/10/2021 4:07 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator
Posted by: @cire3iseric

Do the cheaper knock off's work as well ? 

Did not tried it but Looks like yes. On AliExpress it costs around 30 bucks.

Posted by: @cire3iseric

Also, I did re-cell a TB47 and fly's well without having to do anything with it.

Yes, it should work but few cycles could be required to relearn new capacity otherwise charge percentage in Dji Go app could be incorrect.

Posted by: @cire3iseric

However I do have one with an error I would like to repair

Paste snapshot of error type.

 

ReplyQuote
Posted : 16/10/2021 4:31 pm
Share: