Battery bulge after 8 months on 3 M2P batteries

[Fleek]

Really disappointed to find a battery bulge on all 3 M2P batteries after just 8 months use. I fly about 10 times per month, rarely drain battery more than 60%, keep them at good temperature. Two of the 3 batteries are difficult to lock into place due to the bulge. The 3rd one has a slight bulge.
I had this on the Mavic Pro batteries, but after 2 or more years.
It is just too early for this to be happening on these M2P batteries. Sad the product is so fragile.

 

[THE CYBORG]

How long is the warranty on a battery ? I know they are classed as a disposable item but they should have some warranty.
I know you don't want to here this but your batteries are now dangerous.

 

[Doecliff]

That sucks especially due to how expensive they are.

 

[PHZ]

Can you liok at the battery information in DJI Go4 and see the number of cycles and the remaining capacity vs rated capacity.

Also, it is very important to let your batteries cool completely to room temp before recharging them. I have used many batteries in Inspire 1, 2, Mavic Pro and Mavic 2 and never had a bulged battery or any outright failure.

 

[RayOZ]

do you store them fully charged?

 

[silverdragon]

do you store them fully charged?

I thought the smart batteries are designed to discharge after several days or so?

 

[msinger]

I thought the smart batteries are designed to discharge after several days or so?

They start auto discharging after 10 days. It could take up to 3 more days beyond that point for them to discharge down to the ~60% storage level.

 

[silverdragon]

Ok, the 15th of April I charged 5 M2Z batteries, on the 16th I had to had emergency surgery, so if I dont get around to fly the 5 batteries down should I be concerned or just let the batteries manage themselfs?

 

[msinger]

Ok, the 15th of April I charged 5 M2Z batteries, on the 16th I had to had emergency surgery, so if I dont get around to fly the 5 batteries down should I be concerned or just let the batteries manage themselfs?

Just let them auto discharge down to the storage level. It won't be a problem unless you start making this a weekly habit.

 

[RayOZ]

The batteries shouldn't be kept fully charged, hence the auto discharge to protect it. But I am guessing if it's kept fully charged often, it might deteriorate the batteries overtime.

 

[gnirtS]

I have the same issue and started a thread:-

Swelling batteries

Has anyone else experienced swelling of their batteries with fairly little use? I bought the drone in September, standard fly more pack. Each battery has had between 18 and 22 charges according to the Go4 App, never run down below about 20%, usually 50% max. Charged with the standard DJI...

mavicpilots.com

Someone else started a post on them too but i cant find it. DJI forum has 2 other individuals posting the same issues (Bloated batteries ) .

In my case all 3 of my original batteries are swollen to the extent the slightest knock dislodges one side from the lock on the drone so its near unusable.
18-22 charges in total for each battery. Rarely if ever in sport mode, no high discharge rates, original DJI charger, batteries never run below 30% or so etc.

I live in the tropics where ambient air temperature is around 30-35c and its humid FWIW.

2 of my 3 mavic 1 batteries swelled albeit far less severely and over a much longer time period with significantly more use.

 

[¬Nomad]

I thought the smart batteries are designed to discharge after several days or so?

Yes but as I mentioned previously it is preset to discharge after 10 days, this too long to leave at 100%.
and if repeatedly relied on will shorten battery life

 

[BluffPark Drone]

Check out the Facebook Group DJI Mavic 2 Battery Problems. Apparently this is not uncommon.