DJI Phantom 4 - Battery reset and what's inside the case

[@nedbaar]

I had a P4P battery which I had stored while inserted in my P4P for about 6 months. It had the same symptoms as you described. Using your method of resetting the battery, I had 100% success. I've looked at many other videos with different procedures but yours is the simplest of all. Thanks so much. You literally saved me the cost of a new battery which, as you must know, is very expensive. GREAT JOB!

[@adadroneops8478]

Thanks glad it helped you!

[@PANKAJMANHASX]

Man, same here left my p4p battery inside it for good 5 months now its not charging , no lights at all. Going to try this....

[@kayone8571]

@@adadroneops8478 I have a question first off I’ve subscribed I have one battery that flashes on one green led only now I’ve done the reset but seems to do the same I have a rc charger what would you recommend I do charge it with the rc charger and then try the reset

[@andywrob]

Great great video, and spot on with the close-up shots too, thank you so so much. I appreciate people, such as yourself, who help to make sure that the likes of DJI (who expect us to buy a new battery after already supporting them by purchasing an expensive drone from them), and you have made the process so good and straight forward. Thank you again. Sadly I made the mistake also of letting the batteries go flat (no lights at all), and this has given me re-assurance. Oh forgot to add, love the idea of drilling 3 holes in the case (while the battery is out), so that on the next occasion, the + - and reset are available, without having to remove the case again, which, as you can imagine, was harder than rebuliding a v12 engine (well not quite). Take care fella. Andy from Merseyside UK

[@adadroneops8478]

Your welcome Andy, glad it helped you

[@WALK-DAYS]

great job... Nice idea 💡. Sir. Do have an idea of mavic air bms... To unlock like this? Thank you.. I hope you help me.

[@182RG]

Thank you for your help. My Phantom 4 battery pack had no screws to open the pack, and rather than fight the glue and pry the case apart, I used a small diameter very thin dremel cut-off wheel to cut a 1 3/8" x 1/2" piece out of the back of the plastic case at the appropriate location (on the side where the push button is on front). I was able to easily access the main pack terminals and the reset button. All of which I needed and used as per your instructions. Piece of cake! Careful if you use this technique - do not let the cutoff wheel go any deeper than the plastic! Very carefully use an exacto knife in the corners of the cutout, and anywhere else as necessary to prevent damage to the circuit board. I left it open, but a piece of white duct tape might be called for to cover the access hole.

[@adadroneops8478]

your welcome

[@doug6885]

Got the P4P out to get ready for a trip. Found TWO batteries completely dead. The third seemed fine. Watched this video and the reset worked for one, the other lit up as soon as I applied power from an old automotive battery charger for a few seconds. Trying to see if they charge up now. Much thanks!

[@csabatrubjanszky8469]

Thanks! Based on your video I has been used to repair the battery. The video was a great help. Best regards

[@adadroneops8478]

Great new and glad to hear! Always glad to share what I have learned.

[@aubourgfritznor1043]

@@adadroneops8478 Bro i want to have contact with you, Give me your correspondance

[@daviddemaio64]

Thanks so much for keeping my batteries alive-- appreciate your sharing with us!!!

[@anajohnson8418]

thank you for the instructional video. i just used dremel and cut out a small square over the top of all of those so that I had a working window. i used 2 paper clips to short out the reset. i just counted 3rd node down from the top. its on the charger now. not sure if this method will work for me. but I wanted to share that making a window on the bottom of the battery gave me great access without destroying the case

[@jorgesolorzano2615]

Thank you! for the fantastic tutorial! I need to make holes at the back of my battery to try the reset! do you know the measurements at where the holes have to be made? thanks!

[@adadroneops8478]

I'll have to check and follow up

[@DatGuie]

I had a very similar issue but my PCB had an unlabeled green breakout board covering the reset pad. I found that the pad is still there but has a solder blob on it. After confirming that the solder blob had 3.3v logic on it(bat- to solder blob) i shorted it and it reset the battery and now it works again

[@mto_aerial]

You just saved me a chunk of money on a new battery. I like and subscribe!

[@adadroneops8478]

Glad to hear and thank you!

[@JoeSylve]

Would you be willing to do a continuity test to see if that reset test point is connected to any of the pins on the external connector? If so, we should be able to reset the batteries without opening them up.

[@adadroneops8478]

having 12 plus pins I imagine one might be that. Just need more time in my days......lol...

[@flyingskull]

2 of themare data pins the rest is plus and gnd

[@tonymcclendon-hobbytime7727]

I looked back at my Autel star battery. They have the same reset on the board too. I tried to reset it by making the 2 contact areas. The battery lights came on as to reset. This on a battery that has not been open until now. The others I have have been rebuilt and failed . Hopefully it worked. Will give a update when I try the drone on the app

[@tonymcclendon-hobbytime7727]

Same day follow-up. The old battery had no swelling. Was only giving 2 to 3 minutes flight time. After the reset. Full battery displayed 17 minutes. I flew for 11 minutes until the first low battery warning at 33% with 6 minutes left on flight time. I landed on first warning. Have to say, a success. Not sure if the reset will work on a battery with new cells. Will have to try.

[@republicansthatdidntvotefo1605]

Thank you for this video very helpful.... And don't be scared to take these apart, You can't break something that's broken....

[@DowntimeMedia]

Had a Phantom 4 battery that was not taking charge but would do the 13 blink routine when clicked on. Tore it apart to follow this guide but it still won’t reset. Am I doing something wrong? I left the positive and negative battery terminals on a 12V 1000mA trickle charger over night and tried to reset it again and it still won’t light up like yours did in this video.

[@wmschenck]

This is such an incredible video. I've got two P4 batteries that have been sitting for a long time that I tried your procedure on, but no joy. I did not see any green lights flashing. I checked the voltage on both of them and they are .05 or below. Do I need to charge them up a little in order for the work? If so, what is the minimum voltage that I will need to charge them up to? I was planning to modify a laptop charger with two alligator clips to place on the positive and negative solder connection to see if I could charge them up a little. Thanks for your help with this.

[@adadroneops8478]

I think roughly 3.5 to 5 volts was the low voltage cut off do get it up to that slowly

[@edendunes]

Thank you, first video to explain it correctly.

[@adadroneops8478]

Glad it helped!

[@melbacaniiii4870]

Hi, I had the same problem, can you give us some sort of a pattern to where exactly we can drill in at the bottom to revel the negative, positive and the reset button, so we can do away with the guesswork? I know this may be too much to ask but this would really help. Thank you.

[@melbacaniiii4870]

Thank you, I found a way to drill a hole based on your close ups. Appreciate it.

[@adadroneops8478]

Glad you were able to figure it out, I was away for a bit and getting back to some drone repairs again

[@andrewgriffin8313]

Can you provide some measurements for the drilling you did

[@MrSinghdds]

I did what exactly you showed annnnnnd it worked. wow. Thanks.

[@adadroneops8478]

Your Welcome

[@gamevichannel]

I just tried this with my P4P V2.0 battery...which was completely dead. No leds flashed before this...but I managed to reset it a few times and the leds started flashing for a bit...but then went to completely dead, again. Now it doesn’t do nothing anymore...should I let it to charge? Even tho, I have let it for like 2 days in the charger, but without any activity. It is possible that if it’s completely dead it won’t do anything forever again? Even tho, after a few resets, it started to flash a bit...the 3rd led for a few times, then it died completely. I’m so angry and frustrated :(( any help / ideas?

[@gidesp1]

Merci beaucoup Monsieur. Très bonne vidéo.

Goodnight I would like your help, I took the measurement and my battery was 2.34 Second test was the bridge at point 1 Bat and in the second test the lights gave no sign of life. do you know how to help me? thankful!

[@MrSKB69]

Thanks for that, do you know the settings for charging them back up with a Lipo charger?

[@MichaelLangdon-en5cw]

Informative practical video 👍👍👍

[@FernandoMartinLoriente]

Hola , tengo una batería del phanton 4 ,cuando la pongo a cargar se enciende el 1º led y se apaga y vuelve hacer lo mismo . puando le pulsas el botón solo sale un led y se apaga. la podéis reparar y cuando costaría

[@Beasteria]

Hello, are you selling the BMS Battery of DJI Phantom 4?

[@mqrone1555]

Hi im french my english is broken I have take off the case i need to use just the screw for put reser or i need to do like you with the other part connected in the same time if I dont have your matériel what can I use for do it an electric câble can do the connection?

[@camilo8cheryl]

Left my batt on the P4P for 5months and now battery has no led lights whatsoever.. will try these and hope it works..thanks

[@burtwonderstone5315]

Just curious to know if you had any luck trying this. I'm in the same boat. This is now my 2nd P4 battery to become a brick.

[@camilo8cheryl]

@@burtwonderstone5315 just send it to hyperflight drones they will fix it for $40 i think..already sold mine and upgraded to a mavic air 2s/RC pro combo months ago..

[@burtwonderstone5315]

@@camilo8cheryl Thanks, that is the plan at this point. Trying to decide whether to pull the trigger on the new Mini 3 Pro or wait to see what happens with the next gen. Air 2s.

[@JeremySimmons33]

What do you do if the battery is completely dead? I have no power at all so I can't even try the reset procedure.

[@PureDroning]

How is it called the thingy you use to reset it? Is that a simple cable with two tweezers/clips ??? Answer will be appreciated I need to try this on mine 🙏🏻🙏🏻🙏🏻

[@burtwonderstone5315]

Yes, I believe it's a simpler jumper wire - you can get them easily on Amazon etc.

[@ini-hobby-ku9245]

Terima kasih tutorialnya, sangat menginspirasi 👍 Selama ini, cara mereset batrei drone yang saya tonton selalu menggunakan alat. Tetapi anda hanya menggunakan kabel. Akan saya coba di batrei saya 🙏

[@wd-cr1nv]

Thank you thank you!!🎉🎉🎉🎉 I never comment on anything even if it helps me and I know I should but this time I'm going to.❤

[@MrCraeyon]

Does it really reset the cycle?

[@GavinTomlins]

Is it possible to get measurements from side and top of case to drill the holes please?

[@adadroneops8478]

I can follow up with that

[@CapsuleFilms]

@@adadroneops8478 hello is there any measurements for this?

[@fahrizalwahyu7765]

Halo pak Software nya pakai ev2300 apa ev2400? Terimakasih

[@alexanderbrick]

You are A GENIUS THANK YOU FOR THE GREST VIDEO

[@nightstringers]

You left out hot to open the battery. Thank you for this video btw

[@0525ohhwell]

So... I am guessing the single flashing light is actually a dead cell or something?

[@sandymcleod746]

This realy dose work thanks from australia

[@carlo_jacal]

Thanks for the vid. Did the steps but still no blinking or life from the battery. I have no I have no electricity measuring gadget. If I charge the battery the same time that I do the reset? Bad idea?😅

[@adadroneops8478]

Should still be ok, you are resetting it like a computer reset

[@carlo_jacal]

@@adadroneops8478 Nahh its dead. Doesn’t show any sign😓

[@jaylyly1180]

please show each voltage on dji go 4

[@dennisnomen.6285]

Hi , I did everything as in your video, but the drone does not turn on

[@adadroneops8478]

Does the battery turn on now but the drone does not turn on?

[@dennisnomen.6285]

@@adadroneops8478 The drone doesn't start, help , what to do ?

[@adadroneops8478]

Does the battery seat, or fit all of the way in the drone? I have heard of the connections loosing or shifting. If the battery turns on and the drone does not it is either not making contact with the connector inside of the drone or something else is wrong.

[@NMHC1978]

i have 2 P4 batteries and they do not wants to auto decharge, any idea. I've set the decharge on 3 days. But even after a week it does not decharge

[@adadroneops8478]

not sure why it wont. I have several that seem to just hold their charge

[@andrewgriffin8313]

Great video. Measurements would be handy

[@Shivakeshavacinematography]

Hello brother hope you are doing well... What happens when we do the same thing with power point ?

[@adadroneops8478]

Do mean trying it through the 12 pin connector?

[@zachstribling6502]

I think he means instead of taking the alligator clip and putting it on the negative battery terminal what happens if it goes on the positive

[@mihaigsm2003]

This method reset only mcu processor, not BMS.

[@adadroneops8478]

Correct, you need a batter interface to read the board and reset the BMS I believe

[@analogpunk-7743]

Hey there. Awesome Vid. What should I search to find the positive and negative wires?

[@joaovitorsantosgrigorio8133]

eu arrumo baterias do mavic 2 pro, phantom 4 e toda linha DJI com o uso de software para a ativação do chip.

[@joaovitorsantosgrigorio8133]

I fix batteries for the mavic 2 pro, phantom 4 and the whole DJI line using software for chip activation.

[@analogpunk-7743]

@@joaovitorsantosgrigorio8133 could you be a little more specific about what you mean?

[@joaovitorsantosgrigorio8133]

@@analogpunk-7743 I make repair in the DJI batteries, using a software that allows me to unlock the chip and fully activate the battery. The external load is not necessarily reactive to the battery, so I use the software to complete the process

[@analogpunk-7743]

@@joaovitorsantosgrigorio8133 what’s this software called?

[@form0013]

Any thoughts on how to handle a broken cell?

[@adadroneops8478]

you would have to replace the individual cell, a lot of work to do that.

[@ChristFollower-s5s]

Thanx bro, good guidance, succes always on you bro,,,

[@coura5127]

Hi, I did It all, but now the battery is fully charged and the drone doesnt start with the reseted battery. When I install the other battery the drone works normally. Is there any fix for that?

[@adadroneops8478]

sorry not 100% sure could be the software not liking something

[@juvillace22]

Good 👍🏻 really helps, thanks

[@adadroneops8478]

Glad it helped!

[@airabruzzo3839]

Video is clear, but I tried with 2 non responsive battery (hybernated) one of this is brand new, and nothing happen, no flash light, no signal...

[@oconnb910]

I have a Mavic Pro and this is old. Only 1 battery has failed due to puffy. The other 6 batts are still going strong. I also have a Mavic 2 Pro that is eating Batteries for Breakfast!!! 4 bad 3 good. I have a Phantom 4 Pro Obsidian that has been pretty good until recently. Now it is Eating Batteries also! in 2 weeks, 3 went bad. They also have some puffy! What is going on???? BTW-- I also have a Tello and it has also started eating batteries. Very short life on each of those now. It used to impress me, but now not so much! I know about charging correctly, but lately the batteries seem to not follow same program.

[@adadroneops8478]

I have always wondered if "software updates" could change the parameters and the batteries life goes the way of a inkjet cartridge.

[@bmoregta]

it's been almost 2 years since I used my phantom 4 and now, I will try this method on 3 batteries' that i have because 2 won't turn on at all and one did the one light, so now I will try this and if all is good, I will leave another comment thanks 👍

[@audiofra]

Did you fixed your batteries?

[@jeffmerrill7204]

What does multimeter need set on to do the reset

[@camilo8cheryl]

Meter is only for checking batt voltage.. you need a jumper wire from Batt(-) then connect to reset points on the board and wait for few seconds

[@elakeee2921]

@@camilo8cheryl Can you please tell me how much volt do we need to provide to the RST pin

[@andremartyns]

No meu caso o drone também não ligou infelizmente, bateria ligando e desligando normalmente

[@mt-broad]

conseguiu resolver?

[@ahmadsum1]

can anyone please provide exact distsnces from the edge of the battery case for drilling reference?

[@adadroneops8478]

Let me look at it and follow up

[@timothyeparsons]

Thank you! I was able to fix my battery after a lake dunk. Saved myself 1000k, but I really wanted that new drone lol.

[@johnmiller4553]

NICE.. THANKS BRO 🤙🤙🤙🤙🤙🤙

[@elakeee2921]

Can you please tell me how much volt do we need to provide to the RST pin?

[@adadroneops8478]

it is like a PC, connect the RST to the ground(-) hold and release.

[@budidayajamurtiram248]

Can i reset mavic 2 battery? It wont charges/dead

[@adadroneops8478]

The battery mother board has the same points of contact from what I have seen in other peoples videos. I do not have a mavic 2 battery to test and do a video on.

[@joaovitorsantosgrigorio8133]

I fix batteries for the mavic 2 pro, phantom 4 and the whole DJI line using software for chip activation.

[@oconnb910]

@@joaovitorsantosgrigorio8133 You have mentioned this twice. I am curious about mavic pro 2. can you give some info? I have 4 batts that are either swollen or just non responsive. Please Help! I am a Tech, but am fighting a losing battle on these. It is now costing a fortune to Fly my Drones!!!!

[@joaovitorsantosgrigorio8133]

@@oconnb910 in the case of a swollen battery, it is recommended to change the cell pack, because if the battery swells at one time or another it will damage the housing and run the risk of further damage.

[@joaovitorsantosgrigorio8133]

@@oconnb910 In my case, I activate DJI batteries that do not turn on or do not charge, in cases of being swollen, the recommended thing is to change the battery pack for a new one and this can be expensive.

[@authenticlore8124]

Can someone please help me here. This just happened to me. My battery for my Phantom 4 v2 is destroyed and I am hearing that its because I haven't used it in awhile and its therefore "below a certain voltage". So does this mean I need to spend $200 every time for a battery if I don't use it for awhile? How do you maintain batteries then?

[@ColinTalksCrypto]

Did you even watch the video? Watch it.

[@authenticlore8124]

@@ColinTalksCrypto you’re a crypto bro. Your opinion doesn’t matter

[@ColinTalksCrypto]

​@@authenticlore8124 Lol. The sole purpose of this video is answering your question. Therefore you didn't watch it and you must want people to just spoon-feed you the answers. Insult me if you wish, but your comprehension level, maturity and laziness is that of a child.

[@authenticlore8124]

@@ColinTalksCrypto no, I watched the video. I wasn’t going to break open my battery and mess with the wiring. Which is what the video was telling you to do. So I asked if there was another way or if I have to just get a new battery and make sure it’s always charged. My comprehension is fine crypto bro

[@bagiamin5289]

verg good , thank u very much , I have solved my problem

[@benjammin1001]

That didn't work for me. I had to manuall recharge the battery into operating range, snag onto the I2C bus to the Ti BQ30Z55 BMS and unseal, reset the undervoltage flag, re-seal the pack. Getting the pack apart was the harder part. not fun. DJI should have designed better for all the work they put into that battery controller.

[@philmtx3fr]

Very interesting. Thx for that

[@adadroneops8478]

Glad you enjoyed it, thanks

[@wingnut8466]

it work on 2 of the 3 batteries thank you

[@adadroneops8478]

Great to hear you were able to get a few of the going what is the 3rd doing?

[@wingnut8466]

@@adadroneops8478 it isnt doing anything

[@adadroneops8478]

try holding down the power button for atleast 10 seconds to get it ro reset and cycle it self. see if that helps.

[@ElectricosCosmos]

4:09

[@andreimitici8613]

Have anyone found a solution for the first led flashing ?

[@TheXugi]

no

[@adadroneops8478]

Software reset is the only way

[@newbiecam]

Excellent! Thanks!

[@pantausumbar645]

Thank you

[@user-dd7uc1oh5j]

То, что аккумулятор разблокировался и даже стал заряжаться, ни о чём не говорит! Когда вставишь его в квадрокоптер, он откажется взлетать!

[@adadroneops8478]

That has happened to me as well

[@arsyadtech]

Great job. Thanks for sharing

[@briandee98]

thanks

[@globalinfortech]

👏👏👏