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Id like to unlock and get rid of my pf error code on phantom 4 pro battery due to sitting so long. is it the same process? and can i get the code. liked and subscribed. thanks

great tutorial. Thanks to you I brought 2 batteries back to life. Thank you very much.

Hello quick question waht is the white board that the tp 4056 sits on?

How can I do it with Arduino Uno?

does this method work also with the battery of Mavic pro?

goofy ah intro

luv u bro ez unlock my mavic 1 bat

thanks a lot sir Easy way to unlocke Air Drone Battery sir Phantom 4 battery BQ30z55 ko unlock krny k liy bhi Aisa hi koi trik bta dain ya HEX file

I uploaded code correctly , pin connection are also right ,but the lcd only turning on it doesn't show any msg so what should I do

what happens if you use 5v phone charger with a TP4056 to charge the cells?? did I screw them up? because I got them up to 4v but the arduino IDE is stuck on Unseal/FAS ...

I would like to do the same but with MAVIC PRO 1 battery. Is there an .ino file ready to upload to arduino and use a software to unlock PF?

hi i am stuck in unseal fas even i chargfe the battery in 2nd step all cells is 4 vlots now why nothing happens if unsealing

Is circuischools website stil active, cant access it at the moment?

got scammed

Is there somewhere detailed instructions on how to proceed if you need to load the cells like in the last part of the video. Unfortunately, I am quite inexperienced here and would need help or guidance.

Hi, I have tried all the steps, however stops at loading the hex with xloader. (I have used it for other hex). Can the issue be that I have the Micro version? Different chip on it. Any tips for me would be great. 😀

Genial, me llego hoy un arduino nano supongo chino por mercado libre argentina, parecido a amazon o ebay de eeuu. y funciono al segundo intento, cambiando de puerto com e instalando los drivers ch340g.

I have charged the battery to 4.0 v each cell but i got stuck in Unseal/fas Please help 🥲

why does the music make the camera shake not so annoying?

Hi do you guys still exist?

Hi, i tried this past it works. Now i replace the cells and tried this again but now its stuck at unseal/FAS no blinking leds.😢 please help

Can you change battery capacity with this too or do I need cp2112 to change capacity values. I’m trying to make a Dji mini 2 battery with 3500mah lipo cells

Is this possible with the Dji Mini 2 battery?

Does someone have Arduino code password

Thanks

Thanks for the video ! I'm trying to repair my 3 DJI Mavic Air batteries, but i'm stucked on "Unseal/FAS". I've also bought a lipo charger and charged the cells to a correct voltage, but nothing changes. The thing I'm doing different from the video is using a "DCcduino" Arduino UNO Chinese clone, should this be a problem ?

With many thousands of Mavic Pro and Mavic Pro Platinum owners having the (now) very common 'Battery Error' in many of our original DJI batteries, have you given any consideration to creating a data upload file for both these Mavic batteries similar to what you have done for your Mavic Air battery so we can use your Arduino procedure? I for one, am very interested in obtaining such data file specifically for my Mavic Pro Platinum battery; even if you charged a (small?) fee for doing this for interested Mavic Pro / Pro Platinum owners! There is total confusion on what Pins 1 & 10 in this battery actually are; e.g., in the only "reliable" Mavic Pro / Pro Platinum complete pinout [[which are completely different for all other Mavic models battery pinouts]] I have come across on the Net, Pin 1 is shown as RXD (UART Receive) and TXD (UART Transmit), BUT do Pins 1 & 10 also actually correspond to the SCL & SDA pins respectively (or even vice versa), and if so, which is which?? I am not knowledgeable in UART understanding! I know there are SCL & SDA locations on these batteries internal circuit board however, you have to essentially destroy the battery casing in getting access to this board - also, it is a time-consuming exercise and one that carries a fairly high "danger risk" for the inexperienced (and experienced alike) to attempt dismantling the battery casing! I've tried the CP2112 board procedure which failed every time stating 'battery not connected or similar error message' and come to the conclusion Pins 1 & 10 (SCL & SDA) are NOT connected to these UART designated external pins???? Appreciate your (or any of your viewers) advice here, please. I have three Mavic Pro Platinum batteries and all three show absolutely no puffing or damage or other adverse observations and all three can be discharged (for the defective DJI battery via the USB - battery adapter) and charged fully! The only difference is that the defective battery shows the "Battery Error" fault which, therefore, prevents the drone from flying!!!! Clearly, IMO, the issue is solely that the PF Flag is blocking the battery from operating!!! Having received the "Over current flashing code" during charging this battery wherein the charger actually put out more current than it should have(??) and repeatedly does this for the few times I repeated this process, I no longer use this charger and am waiting on delivery of a new one! Greatly appreciate your help in resolving this wide-spread issue with Mavic Pro Platinum batteries, please. Cheers from Down Under and Seasons Greetings to all. [PS: I have subscribed to your site and sent you a shorter version of the above email].

First of all, I would like to express my gratitude to the developer who generously shared the Maverick Air battery recovery code and provided an easy-to-follow explanation. My battery had not been used for about 6 months, and one of the two batteries had low voltage, causing the battery management system (BMS) to lock the battery, preventing it from charging, and the green LED was not functioning, as described in the video. Following the instructions in the video, I purchased an Arduino Nano and the necessary cables to prepare for coding. Since one cell of the battery had dropped below 3 volts, I disassembled the battery and individually charged the three cells using the 1-cell lithium polymer battery charging function of an RC battery charger. After charging the 3 cells to the same level of 3.7 volts, I prepared the program and files as instructed in the video. There were many trials and errors in the process. Even though I followed the video, the file did not upload, and the red transmission LED on the Arduino Nano did not blink. Despite trying to change the transmission speed, as suggested in other comments, the file still did not transfer. Finally, changing the COM port from COM4, as mentioned in the video, to COM7 allowed the upload to succeed. After a successful upload, following the remaining steps outlined in the video resulted in the battery coming back to life perfectly. I then charged the recovered battery with a DJI charger and successfully completed a flight. Since the voltage of the three battery cells in my case did not drop significantly, there seemed to be no impact on the battery performance. If not using the battery, it seems advisable to charge it at least once every three months. Charging until the green LED shows two bars should be sufficient; it doesn't need to be fully charged. I hope everyone can successfully recover their batteries.

Very good my friend. It worked like a charm. I just had first charge the cells to at least 3.2V. Thank you so much for sharing this work with the community!

To have a good contact with the battery, use metal tape that we use to make lithium battery packs (this takes soldering very well) cover with a welding film on 8mm, solder one end of a strap wire above cut with scissors to have the pin of the strap like a flag (the flag being the ribbon). you now have a connector that ensures a good connection. I think it must be possible to do it with a piece of tin can (I haven't tried)

Hi, I also own a Mavic air battery with the usual problem. But I don't have arduino, how can I do to bring her back to life? Thank you

So I did everything perfectly but the battery light still didn't come on even when pressing the button. I had to take apart the battery. No need to drill holes or anything crazy. Using a pen knife you can carefully ubdo the back of the case by working near the connector. It will open like its on a hinge and you will see the BMS board at the top. There are three cells that each should be over 3 volts. There are 6 total pads. 3 on the right and 3 on the left. Each two pads should show you the voltage using a volt meter. Find the cell that is low. Usually one will be under 2 volts. Make sure to take note of the positive and negative side and take a 4 volt battery supply and connect Pos to pos and neg to neg. Do this for only a few seconds using some wires. No need to solder anything then check the voltage. Keep doing this until the voltage is over 3 volts. The program should now work and you can charge fully using the DJI charger.

Where is Arduino Code? Is encrypted?

Is the code work on mavic pro battery? Thanks

It would be good if you tried to open the battery of a Mavic Air 2 and transfer it to the battery of a Mavic Air 1 to increase its flight time, since one has more milliamps than the other. PD: Good video 🎉

Great program that has worked for me. Due to a lack of battery power, I also had to open battery case and manually charge each of the 3 Lipo batteries. The Ardunio UNO R3 (ATMEG328P) worked fine after trying the software on a NANO "every" ATMEGA4809 chip set.😅 Thank you, Circuitschool

Will this method work for the dji mavic pro. I work in a hospice and we were gifted one but the batteries are non responsive. We are going to use it to check the gutters and roof of our building, that is if I can get it working again - not sure if it works though so not wanting to buy a new battery etc.

What is the board that you're using Do I need that or can I just soldier the pins

Hi, How can I get the code for mavic 2 pro?

Thanks for this great instruction video. It felt like a miracle to see the green battery leads flash like in the old days. At first I encountered some trouble with Xloader, but uploading with a baudrate of 57600 instead of 115200 was the solution (took a while to find out 🙂). Also the use of TP4056 was a succes . I bought 2 for nearly 1 euro! Connected it to the usb out of the Mavic charger and within a few minutes I had charged the 3 cells from 2.40 -1.21-1.51 to 2.85-2.82 and 2.89. This was enough to properly run the HEX. Thanks a bunch ! While typing this the battery indicates it is fully charged. Greetz from the Netherlands.

If you get stuck keep retrying and or adjusting wires I Took some retrying multiple times but I finally got it to take. I had issues with the xloader device settings not seeing my device so I ahead to change it to the cc01 and not the cr03. Even though it said the 4854 bytes were uploaded.

Chief can you help me i’m using MAC OS. I can’t seem to run the XLOADER. Thank you

Thanks for sharing this! How long did it take you to charge the individual cells with TP4056?

Hello guy, can you please send the code to configure my arduino (nano) to a usb to a SMBUS ?

Hi, your codes work wonderfully I've tried resetting the cycle number and work perfectly. Is it possible to customize the cycle number to 7 or 10? Thanks

Does it also work on mavic pro batteries... ?

You're really awesome, thank you!👍You saved my Mavic Air 1 battery.🙂 I had to use the TP4056 charger, charged the battery's 3 cells up to about 3.6V, and after the script was also able to recognize and unseal the battery. Xloader wasn't working at 115200, so i just left it in 57600. I used an Arduino Nano clone (cheaper) and it was fine. Greetings from Hungary!

I have a DJI mavic air but xloader hé does not want IT upload file,more Than one hour I tried it,anyone help?,using a arduino nano v3

hello can i use this your work on dji mini 1 battery that hasn't been charged for 2 years?

Obrigado pelo vídeo tutorial de como restaurar. Comigo deu certo da seguinte maneira: Tinha a versão do arduino ide atual e não deu certo. Tive que baixar a versão 1.8.18 igual a do vídeo. Outro detalhe a taxa de transferência o baud comigo não deu certo o valor de 115200, funcionou com a taxa de 57600(xloader). Tive que alterar a taxa no arduino uno para 115200, pois de fabrica veio em 9600. E por último Tive que abrir a bateria e carregar cada célula até a voltagem de 3.85v ou superior para voltar a vida. Pois quando fiz o procedimento, não acendia igual a parte final do vídeo. E ao elevar a voltagem para os 3.85v, ao ligar novamente no computador, a bateria acendeu novamente e estou conseguindo carregar novamente. Obrigado🙂👍🏼