Unfortunately, out of my three batteries, today the second battery is found to be swollen! So I left only with one for the time being. And both swollen batteries have less than 25 flights, always kept under DJI user manual instructions.

Please DJI, do something for your customers. It is not possible to pay almost 7 Euros per flight with DJI Mvic 2 Pro. This is not fair!

The latest firmware update changes the self discharge time to help resolve this.

How long have you had the batteries?

A J Posted at 7-27 01:38
How long have you had the batteries?

They are 1 year old. One of them has 17 flights and the other one 23.

kykmavic Posted at 7-27 02:03
They are 1 year old. One of them has 17 flights and the other one 23.

The warranty on M2P batteries is six months but I have seen cases of DJI looking past that and replacing swollen ones for free. Perhaps contact your local DJI service centre and see what they can do.

kykmavic Posted at 7-27 02:03
They are 1 year old. One of them has 17 flights and the other one 23.

What is their date of manufacture. Mine are oct 2018 and i am having the swell issue.

RK7dronzy Posted at 7-27 02:07
What is their date of manufacture. Mine are oct 2018 and i am having the swell issue.

They have the month July 2018 as manufacturing date.

kykmavic Posted at 7-27 02:09
They have the month July 2018 as manufacturing date.

It seems that 2018 had lots of dodgy batteries. Pehaps quality control was not up to the job at the suppliers to dji. Dji seem to be very stum on this subject.

What percentage do you fly the batteries down to?

bjr981s Posted at 7-27 04:23
What percentage do you fly the batteries down to?

Usually down to 25%.

DAFlys Posted at 7-27 01:08
The latest firmware update changes the self discharge time to help resolve this.

That doesnt solve it.  If anything its an admission from DJI there is a problem they cant solve.

They've gone from 10 to 5 to 2 days in firmware updates now so they clearly know theirs a fault with the batteries.

I now have 7 swollen batteries. Every one under 30 flight cycles.  Those were an original batch, a year later and another only 7 months ago.

Ive started making holes in the case to stop swelling.  Its exactly what you're not supposed to do but has solved the issue.

gnirtS Posted at 7-27 07:43
That doesnt solve it.  If anything its an admission from DJI there is a problem they cant solve.

They've gone from 10 to 5 to 2 days in firmware updates now so they clearly know theirs a fault with the batteries.

Can you post some photos of these holes and describe how to do it?

Hi. I am sorry for the trouble this has caused. With regards to this concern. Kindly please contact our DJI support team to further investigate the cause of the issue and a proper resolution will be provided. Thank you.

kykmavic Posted at 7-27 08:59
Can you post some photos of these holes and describe how to do it?

I'd rather not as obviously its a really stupid thing to do.  However i had nothing to lose by doing it.
There IS someone on youtube with a video showing it.

But basically a safety pin, very carefully roughly in the middle.  But don't. You really shouldnt!  ITs a terrible idea for many reasons.

DJI Paladin Posted at 7-27 23:43
Hi. I am sorry for the trouble this has caused. With regards to this concern. Kindly please contact our DJI support team to further investigate the cause of the issue and a proper resolution will be provided. Thank you.

Thank you i will contact dji support but unless they are going to replace my batts free of charge it seem a waste of time. But you never know.

RK7dronzy Posted at 7-29 05:52
Thank you i will contact dji support but unless they are going to replace my batts free of charge it seem a waste of time. But you never know.

Thank you for the additional information and for contacting our DJI support team. Rest assured they will do their best to assists your regarding this matter. Thank you.

kykmavic Posted at 7-27 05:03
Usually down to 25%.

That should be fine. If you fly down to 5% regularly that would cause the bats to swell.

I have a mavic pro 2 battery that’s swollen with only 20 short flights, this is unbelievable and mavic 2 owners are owed restitution..

DJI Paladin Posted at 7-29 23:18
Thank you for the additional information and for contacting our DJI support team. Rest assured they will do their best to assists your regarding this matter. Thank you.

I have contacted 2 times the DJI support, BUT THEY DO NOT REPLY!!!!!!!