Drone sat for a long while, and now batteries are in hibernation.  I was hoping that dji had fixed the issue with an update, but cannot update with dead batteries.
They are not 100% dead, but darn near.

I've read all the blogs about this, watched a few videos, and nobody says what to do with dead batteries and old firmware, so I'm baffled.

Saw one blog where a guy has you buying electronics, wires and this and that and putting it on a program to read its heartbeat and revive it.
That's too much, I'll sell it off prior to having to do that.

Thanks

Hi, hunterws. Thank you for reaching out. May we ask how did you charge the batteries? Are you using a charging hub or not?

Yes.  Three slot that came with the fly-more combo.
I've also tried with it in the quad.

hunterws Posted at 7-11 19:34
Yes.  Three slot that came with the fly-more combo.
I've also tried with it in the quad.

Thanks for the reply. Please try the following steps below:

① Ensure that the charging temperature range for the intelligent flight battery is within the required range；
② Change another port of the charging hub for charging. If the battery can be charged normally, it indicates that the battery port of the charging hub is abnormal. If the charging still fails, change the charging method, use a charger, and ensure that the battery is not in hibernation mode；
* The batteries of some products will enter hibernation mode when shipped out from the factory for long-term storage. A battery in hibernation mode can be woken up with a charger, but not with a charging hub. If the wake-up fails, please re-connect the charger until the battery wakes up.
③ Please check the battery LED status, comparing to the battery LED status to confirm if the battery protection information is triggered by abnormal charging；
④ Try to use another battery in the same charging port and observe whether the charging is abnormal. If it charges normally, it indicates that the first battery is abnormal. If the charging still fails, please use a charger for charging.

Moreover, here's the recommended maintenance for the long-term storage of batteries:

During storage, the battery will deplete at an extremely low speed as is normal for lithium batteries. When the battery level is extremely low, batteries may over-discharge.

To maintain battery activity and extend battery use life, it is recommended to discharge the battery to 40% - 65% when it will not be used for 10 days or longer and store it in a dry and cool place (22°C - 28 °C). Check the battery level every three months and then let the battery completely discharge and then recharge it. Pay attention to battery maintenance during daily use.

Change another port of the charging hub for charging. Not sure what you mean here.

I let the battery remain in the mini and charged it about 10hrs, same result, one lonely flashing LED.

All three batteries are doing the same thing, just one LED flashing.  Cannot test anything with a good battery as I have none.

hunterws Posted at 7-12 08:38
Change another port of the charging hub for charging.  Not sure what you mean here.

I let the battery remain in the mini and charged it about 10hrs, same result, one lonely flashing LED.

Sounds like the charger or cable is to blame...

Bashy Posted at 7-12 17:36
Sounds like the charger or cable is to blame...

You pegged it Bashy.  I'm now charging.

I had such confidence in genuine DJI equipment, I didn't even think to try another route.
After I saw your post,  I plugged an 8" cord into another adapter and tried it, and it started blinking & charging.  

Appreciate the post, thanks.

Not sure why people always bash on dji and theaten not to buy their products anymore cause it's trash when it's user error. Lmao. Dji losing 1 customer ain't gonna hurt them. Dji makes great product. I used to fly non brand drones from China and once i switch to dji, I never go back to those non brand drones. Dji products are on the high end when it comes to drones. Not many can even come close. So seeing how people get mad at a product when it's their own fault and then threaten the product is trash and they won't buy it anymore. It's just pathetic imo.

hunterws Posted at 7-12 17:55
You pegged it Bashy.  I'm now charging.

I had such confidence in genuine DJI equipment, I didn't even think to try another route.

No worries, glad ya got it sorted!

Can anyone help me I just bought the dji fpv an the batteries are not charging / not lighting up

I just got my DJI mini 2 SE and the led lights on the bottom of the drone light up and flash three times and it keeps repeating I know it is not the cable and I don't know what to do please help

djiuser_OyRqw6ZqL9eG Posted at 12-25 10:27
I just got my DJI mini 2 SE and the led lights on the bottom of the drone light up and flash three times and it keeps repeating I know it is not the cable and I don't know what to do please help

Hello there. Sorry about the trouble. Is it all four lights blinking three times? You can refer to this link: https://support.dji.com/help/con ... 2525253D%252525253D. Please keep us posted. Have a nice day.

Drone sat unused for many months. Phantom 4 batteries don’t seem to be charging. Initially had one blinking green light that would come on, but now both batteries don’t even light up. Thoughts?

djiuser_c171WuMBetZI Posted at 3-3 09:39
Drone sat unused for many months. Phantom 4 batteries don’t seem to be charging. Initially had one blinking green light that would come on, but now both batteries don’t even light up. Thoughts?

Hi there. Thank you for reaching out and we do apologize for the trouble. Please confirm if you are using the DJI Phantom 4 or the DJI Phantom 4 Pro. If you are using the DJI Phantom 4 Pro batteries, kindly please leave the batteries on the charger one by one for approximately 2-3 hours or more then check if the issue persists. Please keep us posted.

Bonjour j’ai un phantom 3 pro et je suis incapable de charger mes batteries il n’y a aucun lumière qui fonctionne complètement morte
Je ne me suis pas servi de mon drone depuis 3 ans
Est-il possible que mes batteries soit vraiment détruite?

fans26073105 Posted at 3-26 06:50
Bonjour j’ai un phantom 3 pro et je suis incapable de charger mes batteries il n’y a aucun lumière qui fonctionne complètement morte
Je ne me suis pas servi de mon drone depuis 3 ans
Est-il possible que mes batteries soit vraiment détruite?

Hi there. As electronic products are affected by technological developments and changes in usage requirements, each generation of products has a fixed life cycle. In order to continuously provide you with premium product and service experiences, DJI regularly optimizes resource allocations to promote the development and application of new products and technologies. Therefore, we have decided to stop providing support services for the Phantom 3 Series and its accessories starting on January 5, 2023. We're sorry that the services for this product have been suspended currently and relevant technical support and after-sales repair services cannot be provided.

We recommend that you upgrade to an alternative product of a new model so that you can enjoy our more recent, improved technologies, and then we can continue to provide you with efficient customer service.Thank you for your understanding.

I have the same issues and four led flashing
What should I do

djiuser_E0S1pZuIOgOW Posted at 4-7 09:07
I have the same issues and four led flashing
What should I do

Hi there. Thank you for reaching out and we do apologize for the trouble. Please confirm what specific DJI product you are using. You may upload a short video showing the issue via Google Drive so we can further investigate the issue. Please keep us posted.

My dji mavik was not used for a year . The battery was kept aside . Now I tried to plug in the drone and charge through cable, it showed light once and then since then it isn’t charging at all . All dead, no lights.   I have kept it plugged in for overnight . Any help ?

Syed Umair Posted at 4-15 07:31
My dji mavik was not used for a year . The battery was kept aside . Now I tried to plug in the drone and charge through cable, it showed light once and then since then it isn’t charging at all . All dead, no lights.   I have kept it plugged in for overnight . Any help ?

Hi there. When a battery is powered off and stored, it will deplete at a low speed, as is typical for lithium batteries. It may over-discharge when its battery is extremely low and remains idle in storage. To ensure that the active materials within your battery are in good condition and to extend battery life, it is recommended you discharge the battery to 40% - 65% in case it will not be used for 10 days or longer, and store it in a dry and cool place (22°C-28 °C). Charge and discharge the battery completely at least every three months. Have you already tried using a different cable or check your power outlet? Please keep us posted. Have a nice day. https://support.dji.com/help/con ... p;re=US&lang=en

I am very careful not to ground a drone for long periods of time for this exact reason.  I have three main outdoor drones that I rotate through to make sure all the batteries get flown on all the time.  As for the gentleman that has the Phantom 4, there is a charging bank you can get for it.  That you can put all your batteries on it.  When you're not using the batteries, it puts your batteries into storage stasis.  It is a DJI product, so I assume it is safe.  

Hello,
I got a problem with 2 of my 3 batteries from Mavic 3 FMC. I stored them for 3 month with 65-70% charge. Yesterday, I tryed to charge these batteries on the charge deck for a mission, but only à single batterie reached a 100% charge. I made my job and fly with 3 batteries, the first one with 100% charge and both the other with less than 70% charge.
Yesterday evening after the flight session, I plugged these 3 batteries on the deck, and let them charge whole the night. This morning a single battery was charged, both the other stayed bilinking (green) between first and second led. I tryed differents ports on the deck, different charger, and even charging a battery inside the Mavic, these batteries stay blinkink like if they were charging but without progressing after the second green led
Any ideas ?
Thanks for your help !

Arnaud ODS Posted at 5-4 06:36
Hello,
I got a problem with 2 of my 3 batteries from Mavic 3 FMC. I stored them for 3 month with 65-70% charge. Yesterday, I tryed to charge these batteries on the charge deck for a mission, but only à single batterie reached a 100% charge. I made my job and fly with 3 batteries, the first one with 100% charge and both the other with less than 70% charge.
Yesterday evening after the flight session, I plugged these 3 batteries on the deck, and let them charge whole the night. This morning a single battery was charged, both the other stayed bilinking (green) between first and second led. I tryed differents ports on the deck, different charger, and even charging a battery inside the Mavic, these batteries stay blinkink like if they were charging but without progressing after the second green led

The problem seems solved.
both problematic batteries are still charging, but very slowly, so I stopped the charge of one of them, put it in the mavic and started it. 40% charged, I let the mavic on few minutes and then stopped it and plugged it to charge. The charging speed is now correct and after almost two hours the batterie is almost full

Just started using my NEW DJI classic 3. Charging batteries for 3 hours,  only charge about 50% How long should it take. I’m using the charger that came with package

DJI Tony Posted at 4-15 22:30
Hi there. When a battery is powered off and stored, it will deplete at a low speed, as is typical for lithium batteries. It may over-discharge when its battery is extremely low and remains idle in storage. To ensure that the active materials within your battery are in good condition and to extend battery life, it is recommended you discharge the battery to 40% - 65% in case it will not be used for 10 days or longer, and store it in a dry and cool place (22°C-28 °C). Charge and discharge the battery completely at least every three months. Have you already tried using a different cable or check your power outlet? Please keep us posted. Have a nice day. https://support.dji.com/help/content?customId=en-us03400006549&spaceId=34&re=US&lang=en

I recently purchased a Mavic 2EA, slightly used, it came with 3 batteries, one was in the drone and had some flights on it, the other two were still brand new, in the box, factory sealed and everything.  One of them charged right up no problem, the other one won't charge at all.  Using the DJI single battery charging cable that came with the drone, not a hub.  I read somewhere, you should turn it on via short then long press, even though no lights come on, wait 5 min. then put it on the charger and don't touch it until it lights up.  I've tried that several times, still nothin, no lights or anything.   Would DJI still replace it since it was new in box, or do I just have dud??

SunshynFF Posted at 5-15 08:08
I recently purchased a Mavic 2EA, slightly used, it came with 3 batteries, one was in the drone and had some flights on it, the other two were still brand new, in the box, factory sealed and everything.  One of them charged right up no problem, the other one won't charge at all.  Using the DJI single battery charging cable that came with the drone, not a hub.  I read somewhere, you should turn it on via short then long press, even though no lights come on, wait 5 min. then put it on the charger and don't touch it until it lights up.  I've tried that several times, still nothin, no lights or anything.   Would DJI still replace it since it was new in box, or do I just have dud??

Hi there. Thank you for reaching out. The warranty period starts from the date when your product is received. If an Intelligent Battery has been stored for a long period without being charged or discharged, its protection board cannot balance the battery's cells sufficiently to avoid excessive voltage difference. When the voltage difference exceeds the safe threshold, the battery's cells are damaged.

djiuser_7H0JVv8GCzyL Posted at 5-12 10:05
Just started using my NEW DJI classic 3. Charging batteries for 3 hours,  only charge about 50% How long should it take. I’m using the charger that came with package

Hello there. Sorry about the trouble. Have you already tried using a different charger to confirm where the issue is coming from? We recommend using a charger that supports PD3.0 and PPS protocols.  Have a nice day.

and my fpv dronw not charging after o try one by one port charger.and i try direct still same not charging.a few comments from my friends say the head of battery have problem,is that right pr not

I bought my new mavic 3 pro June 20th. One of battery's won't charge.  I put it in the drone , it doesn't light up at all. I put it in the charging hub , the light on the hub instantly goes red.... help!!.

djiuser_qAWCFCfZLHpo Posted at 6-30 20:09
I bought my new mavic 3 pro June 20th. One of battery's won't charge.  I put it in the drone , it doesn't light up at all. I put it in the charging hub , the light on the hub instantly goes red.... help!!.

Hi there,
thank you for reaching out.

We are deeply sorry for the trouble. Could you please upload a short video showing the battery LED behavior so we can check it further?

Looking forward to your response. Thank you.

djiuser_LsvzirLMSVwq Posted at 6-30 06:54
and my fpv dronw not charging after o try one by one port charger.and i try direct still same not charging.a few comments from my friends say the head of battery have problem,is that right pr not

Hi there,
thank you for reaching out.

May we ask for a picture of the power supply ports you're referring to for confirmation?

We hope to hear an update from you. Thank you.

Purchased a Phantom 4 Pro 12/2017; used a few times. Drone and three fully charged batteries were unused for 6.5 years. Situation similar to OP. Quick press of power button shows flashing LED 1. Turing battery on, all four LEDs flash and power button is green but all immediately go dark (I assume battery is nearly completely discharged) Two batteries do this, the third battery does nothing.

Batteries do not charge; connected to the charger, the battery will flash LED1 and power button will be green for a few seconds and go out for a few seconds and this cycle continues to repeat.

djiuser_1r22wWBJxVaZ Posted at 7-5 12:27
Purchased a Phantom 4 Pro 12/2017; used a few times. Drone and three fully charged batteries were unused for 6.5 years. Situation similar to OP. Quick press of power button shows flashing LED 1. Turing battery on, all four LEDs flash and power button is green but all immediately go dark (I assume battery is nearly completely discharged) Two batteries do this, the third battery does nothing.

Batteries do not charge; connected to the charger, the battery will flash LED1 and power button will be green for a few seconds and go out for a few seconds and this cycle continues to repeat.

Hi there,

Battery Storage
1. Discharge the battery to 40-65% if it will NOT be used for 10 days or more. This can greatly extend the battery life.
2. The battery automatically discharges to below 65% when it is idle for more than 10 days to prevent it from swelling.
3. The battery will enter hibernation mode if depleted and stored for a long period. Recharge the battery to bring it out of hibernation.
4. Remove batteries from the aircraft when stored for an extended period.
5. DO NOT store the battery for an extended period after fully discharging it. Doing so may over discharge the battery and cause irreparable battery cell damage.

Note: Battery life may be reduced if not used for a long time.

I hope this information has helped to clarify your inquiries. If you have any other questions, kindly let us know. Thank You!

Hi there! Purchased a Mini 4 Pro last week. Fully charged  battery before first fly. Discharge it by flying. Now seems to be battery won't charge. Try to charge via station and drone - same situation: LED 2 and LED 3 are up without blinking. Please help.

djiuser_fSNhQnrCJoYK Posted at 7-7 03:34
Hi there! Purchased a Mini 4 Pro last week. Fully charged  battery before first fly. Discharge it by flying. Now seems to be battery won't charge. Try to charge via station and drone - same situation: LED 2 and LED 3 are up without blinking. Please help.

[view_image]

Hi there,
thank you for reaching out.

We are sorry for the inconvenience. Before we further assist you, can you please confirm if you have updated to the latest firmware?

Please keep us posted. Thank you.

DJI Natalia Posted at 7-7 04:00
Before we further assist you, can you please confirm if you have updated to the latest firmware?

No, I haven't

djiuser_fSNhQnrCJoYK Posted at 7-7 03:34
Hi there! Purchased a Mini 4 Pro last week. Fully charged  battery before first fly. Discharge it by flying. Now seems to be battery won't charge. Try to charge via station and drone - same situation: LED 2 and LED 3 are up without blinking. Please help.

[view_image]

Here's what I found out. There was failed attempt to update drone firmware. Friend got an error (can't give a code) on 55% progress. Battery level was 3/4. We think that the reason of fail was not empty inner memory (we took 2 short videos without external memory card earlier).

I connected to drone with DJI Fly, deleted videos and checked battery status. Each had ~3.7 V but version was N/A. I decided try again and finish the update. And it finished successfully.

I got a theory about situation. Update process has no check available memory before start. If it so its need to be fixed in future versions. And I didn't find any information for LED indication what I met when update drone's and RC's firmwares (LEDs 2 and 3 up with and without blinking). Please add description of that indications to manuals.

I hope my case will help someone.

nd spachead Posted at 7-8 02:20
Here's what I found out. There was failed attempt to update drone firmware. Friend got an error (can't give a code) on 55% progress. Battery level was 3/4. We think that the reason of fail was not empty inner memory (we took 2 short videos without external memory card earlier).

I connected to drone with DJI Fly, deleted videos and checked battery status. Each had ~3.7 V but version was N/A. I decided try again and finish the update. And it finished successfully.

Hi there,  I want to express my gratitude for sharing your experience and valuable information with our community of users. Your kindness and contribution are greatly appreciated by all of us.

Furthermore, I assure you that your suggestion will be taken into consideration. Your feedback is highly valuable, and we will promptly forward it to the appropriate team for a thorough evaluation. We are committed to providing the best possible user experience, and your continued support means a lot to us.

Thank you once again for your ongoing support.

Got new battery for djimini4k does not charge in drone. Why?

djiuser_oDvU5u7lCGto Posted at 7-23 17:15
Got new battery for djimini4k does not charge in drone. Why?

Hi there, thank you for reaching out and we do apologize for the trouble caused. Could you please check the following details and see if it works:
① Ensure that the charging temperature range for the intelligent flight battery is within the required range；
② Ensure that an official charging cable and power adapter are provided and that the external power supply is normal；
③ Check the battery LED status, comparing to the battery LED status to confirm if the battery protection information is triggered by abnormal charging;
④ Please replace the battery to see if the charger is working normally;
⑤ Please replace the charger if possible；

*After the above steps and found that using the same charger to charge multiple batteries, only one battery cannot be charged, the battery can be judged to be faulty, handled according to policy. If using the same charger, and found that all batteries cannot be charged, you can send back the battery and charger for diagnosis.

If the issue still persists, kindly share us a video showing the issue for us to forward it to our engineering team and check further.

Thank you for your understanding.