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The Smart Battery Is Swollen
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9671 41 2014-10-21
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dekelkabeli
lvl.2

Israel
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Hey my name is Dekel and yesterday I bought a new battery, and i saw that my old battery is a little bit swollen and i only used the battery only 45 times. ( according to the PT2 Assistant) so can it damage or do something to the phantom ? and the dealer that i bought the Phantom 2 will replace the battery?
2014-10-21
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T J Gilbert
Second Officer
Flight distance : 74659 ft
United States
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Contact your dealer.
Maybe your lipo is still under warranty...
2014-10-21
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dekelkabeli
lvl.2

Israel
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T J Gilbert Posted at 2014-10-22 02:30
Contact your dealer.
Maybe your lipo is still under warranty...

Its 9:30 pm in my country so i'll contact him tomorrow. i bought the PT2 4 month ago so i think that it under warranty
2014-10-21
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T J Gilbert
Second Officer
Flight distance : 74659 ft
United States
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Send the dealer a picture of the swollen lipo...
2014-10-21
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dekelkabeli
lvl.2

Israel
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Here's the battery photos. i will send to him tomorrow
IMG_0602.JPG
IMG_0603.JPG
2014-10-21
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jfftorsrud
lvl.2
Flight distance : 9475 ft
United States
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IF the battery is more than 3 months old.  WARRANTY IS VOID!  DEALERS AND REPAIR FACILITIES WILL NOT REPLACE THEM, Including DJI!

Speaking from experience and trying to deal with a really BAD DJI Repair facility.  I'd say which one, but then this post will be removed.
2014-12-21
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kenargo
First Officer
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United States
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dekelkabeli Posted at 2014-10-22 03:17
Here's the battery photos. i will send to him tomorrow

That doesn't look like swelling to me; usually you will get a bubble-up near the center of the cell.  The edge being slightly off looks more like manufacturing and the way the cell/plastic are being held much more than a swollen cell.
2014-12-21
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tonyphantom147
lvl.4

United Kingdom
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I agree with kenargo. This photo is what swelling looks like. Nothing to worry about, unless it looks like my photo.
p2v 021.jpg
2014-12-22
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Daninho
Second Officer

Germany
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im not sure if that is a swollen battery but i think you can check the capacity of the battery in the assistant software, usually swollen batteries have lower capacities
2014-12-22
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pipegutierrez
New

Colombia
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it happened the same to my in december and the battery was still under warranty, when i contacted them they said the warranty expired then i have to buy a new one, its not fair my battery just did 32 cycles when it was supossed to last 300, this is a rip off
2015-1-5
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pipegutierrez
New

Colombia
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i have to say i contacted them 20 days after happend to me, my fault was i didnt know the warranty was just for 3 months, how did you guys deal with this problem.
2015-1-5
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Daninho
Second Officer

Germany
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Again, all of my batteries look like yours, i would say this is not a swollen battery. How much capacity it has?
2015-1-5
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kenargo
First Officer
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United States
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Agree, this is not swollen.  I describe a swollen battery as looking a little bit pregnant and it gives when you press the bulge like pressing on bread.
2015-1-5
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kjkisatsky
lvl.4

United States
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I was about to say, warranty on batteries is a lousy 3 months, but you guys beat me to punch.  Can you imagine if car batteries had such lousy warranties?
2015-1-5
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siweckipawel
lvl.4
Flight distance : 57070 ft
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Poland
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Nope it is not swollen battery, you probably bought the newest  battery version  which is marked as V2.0 version, battery itself is a bit smaller than its predessor. DJI probably changed their  supplier due to high RMA rate. From now on the new battery has no longer "DJI" in battery serial number, just the numbers.
2015-1-5
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acoop2901
New

United Kingdom
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Hi there

just looking for some input on one of my batteries. I noticed after discharge it looks a little puffy and dont know wether it is swollen and unsafe or just me being over critical. please look at my video. any comments would be greatly appreciated







2015-4-10
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Gerry1124
Captain

United States
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acoop2901 Posted at 2015-4-10 22:51
Hi there

just looking for some input on one of my batteries. I noticed after discharge it looks a l ...

That's not swollen,  I have 3 of them and they all look like that for 11 months now, and still have 98% capacity.
2015-4-10
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ianwood
lvl.4
Flight distance : 5236 ft
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United States
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This is typical slight puffing for a DJI battery that is about to go bad. It will likely start to suffer from voltage sags about 50% into the flight. Beware of early auto-land as a result. The battery will likely only be good for 6 or 7 minutes after that.
2015-4-10
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birdfolk5555
lvl.4

United States
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My battery got wet for a few moments. Dried it out as best I could (rice, blower, time), but it refuses to accept a recharge. No lights flash when I plug it in.  Lights do flash when I press the button, however. I guess I'll be tossing it at the nearest recycling center.
2015-4-10
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fhagan02
Second Officer
Flight distance : 1854908 ft
United States
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acoop2901 Posted at 2015-4-10 22:51
Hi there

just looking for some input on one of my batteries. I noticed after discharge it looks a l ...

2 of my bats have the same slight puffy tightness as the one in your video. (They have 50 and 57 cycles according to the PT2 software. Both have been depleted below 8% as recommended after 20 cycle increments) So what's the concensus? One reply says, "That's not swollen, I have 3 like this..." and one says, "This is typical slight puffing for a DJI battery that is about to go bad." Is this slight tightness or puffiness a huge warning flag or "normal" expansion for a LiPo battery.  Does anyone have a picture - as an example for comparison - of a true P2 Lipo swelling as it goes or has gone bad?

Any further advice would be welcome as I'm not sure if the two bats I have are safe for flight.

Thanks in advance.
2015-4-16
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Gerry1124
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United States
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fhagan02@me.com Posted at 2015-4-17 10:12
2 of my bats have the same slight puffy tightness as the one in your video. (They have 50 and 57 c ...

Photos tell a thousand words.
2015-4-16
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fhagan02
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United States
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Gerry1124 Posted at 2015-4-17 10:13
Photos tell a thousand words.

Hey Gerry1124,

The two bats that I have are literally just like the one of the video posted above...

Another example that illustrates the exact same puffiness as my 2 batteries.....


In both vids it's very slight. No more, no less than the videos above but definitely a little more "puffy" than my other 3 batts. I've only had my two Phanom 2's since October 2014 so I really have no experience with Lipo's other than these last 6 months. If it helps at all: The puffyness seems to slowly subside as the batt cools after flight or discharge. As far as I know this tiny bit of "expansion" is normal... perhaps it's a sign of doom to come. I have no idea.
2015-4-16
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Gerry1124
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United States
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fhagan02@me.com Posted at 2015-4-17 10:19
Hey Gerry1124,

The two bats that I have are literally just like the one of the video posted above. ...

I've had 4 batteries since April 2014 and they look the same as yours do now.  If it was swollen, you would not see any gap between the plastic frame and the side of the battery.  A swollen battery would look like Tony's picture under the others.
2015-4-16
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fhagan02
Second Officer
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United States
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Gerry1124 Posted at 2015-4-17 10:13
Photos tell a thousand words.

Here's a quick vid on one of my swollen bats. The one closest to the camera seems normal and there for comparison. Any advise would be appreciated.

http://youtu.be/t1XtyUSm0oM


Thanks all.
2015-4-16
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Gerry1124
Captain

United States
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fhagan02@me.com Posted at 2015-4-17 10:41
Here's a quick vid on one of my swollen bats. The one closest to the camera seems normal and there ...

ok, the battery in the back, check the numbers when you connect it to the PT2 program, it does look a little swollen compared to the front one.
2015-4-16
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fhagan02
Second Officer
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United States
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Gerry1124 Posted at 2015-4-17 10:25
I've had 4 batteries since April 2014 and they look the same as yours do now.  If it was swollen,  ...

Thanks Gerry1124,

Really appreciate your response. I've been lucky I guess. I've not had a single battery mishap/issue in the last 6 months of owning my 2 Phantom's and 5 batteries. But because of this I really don't know what to look for and how subtle the evidence would be if a battery was going bad.

Thanks again.
2015-4-16
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fhagan02
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United States
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Gerry1124 Posted at 2015-4-17 10:49
ok, the battery in the back, check the numbers when you connect it to the PT2 program, it does loo ...

Here's what the PT2 app says about the battery in question. (This battery was depleated by turning the Phantom on and letting it sit. Had just enough juice to boot up and get a reading in PT2) What do I look for?
Screen Shot 2015-04-16 at 11.07.20 PM.png
2015-4-16
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Gerry1124
Captain

United States
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fhagan02@me.com Posted at 2015-4-17 11:11
Here's what the PT2 app says about the battery in question. (This battery was depleated by turning  ...

Cell 2 and cell 3 have a big gap in voltage.  Not good to have that big of a gap.
2015-4-16
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fhagan02
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United States
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Gerry1124 Posted at 2015-4-17 11:23
Cell 2 and cell 3 have a big gap in voltage.  Not good to have that big of a gap.

Gotcha. Thanks a bunch.

2015-4-16
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Gerry1124
Captain

United States
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One of my batteries
battery 4 after charge.jpg
2015-4-16
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fhagan02
Second Officer
Flight distance : 1854908 ft
United States
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I see.

I'm not gonna hold anyone to any advise they give off of the limited amount of info I've been able to relay here.... BUT...with your knowledge would you try to fully charge this battery again and take another reading OR promptly trash it and buy a new one?

I'm assuming trash it and replace with new.
2015-4-16
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Gerry1124
Captain

United States
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fhagan02@me.com Posted at 2015-4-17 11:40
I see.

I'm not gonna hold anyone to any advise they give off of the limited amount of info I've b ...

Normally that gap will stay about the same spread all through the charging cycle.  You would still have that big gap on the full charge.
2015-4-16
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fhagan02
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United States
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Gerry1124 Posted at 2015-4-17 11:44
Normally that gap will stay about the same spread all through the charging cycle.  You would still ...

Good answer. Message received.

Thanks for taking the time to explain this to me.
Learned a lot from you tonight and I appreciate it.
2015-4-16
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Gerry1124
Captain

United States
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fhagan02@me.com Posted at 2015-4-17 11:50
Good answer. Message received.

Thanks for taking the time to explain this to me.

That is why we are all here,  many of us like to help.
2015-4-16
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yorlik
lvl.4

United States
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fhagan02 if you plan to throw that battery away, I would be happy to pay shipping if you would throw it away to me    I would like to do some testing with it - I think there may be an issue here that causes possible premature 'failure' like this.

birdfolk5555 ditto for you;  I would love to have your dead battery for some testing.
2015-4-17
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yorlik
lvl.4

United States
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anyone know how to send a PM to someone on here?
2015-4-18
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Gerry1124
Captain

United States
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yorlik Posted at 2015-4-19 07:15
anyone know how to send a PM to someone on here?

Unfortunately, that is impossible, their pm part isn't working.
2015-4-18
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fhagan02
Second Officer
Flight distance : 1854908 ft
United States
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yorlik Posted at 2015-4-18 01:09
fhagan02 if you plan to throw that battery away, I would be happy to pay shipping if you would throw ...

What do you think the issue maybe and how did you come to the conclusion? If you don't mind me asking of course.
2015-4-21
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yorlik
lvl.4

United States
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I don't have a specific idea at this point other than it seems wrong that these batteries have such short apparent life spans for the majority of users.  I would like to dissect the 3 cells and test each independently for capacity and internal resistance, and also see if perhaps the batt software  is maybe letting the voltage go too low or is simply misreporting capacity.  I would try to check the cells against other known similar size cells to try to determine the missing peak current rating not shared by dji with us;  these may simply not be capable of decent life with our 6x peak pull.  I know of no other testing like this that has been done and it may enlighten us of a way to make them go many more cycles.   It is the kind of engineering studies I do so thought it would be interesting and fun to test away and see if anything pops up.  Maybe nothing will, but who knows unless we do some studies?

To do so requires used batteries;  mine are approaching 20 cycles per assistance, and yet both show HIGHER capacity than new.  So I certainly do not want to run them thru any harsh cycles yet.    This is why I would like some batteries that have low cycles yet report as bad.  The more the better to test!  Anyone willing to send me their bad ones would help!
2015-4-22
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creative
lvl.1
United States
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I currently own three dji batteries for my phantom 2 with h3-3d setup. All three batteries looked slightly puffy and I was concerned. The assistant software showed the percentage of life at 99% on all three, and one has only been discharged 5 times. I put that battery on the door of the fridge for about 15 minutes, and voila! All the puff had dissipated. (see the bottom battery in the photo).


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2015-7-19
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