What happened to my battery?

[Ryedan]

I retired my MNKE batteries, one of which is which is shown in post #5. The discoloration has spread quite a bit since then. The batteries are about 1 1/2 year old and suffering from a lot of voltage drop. On a 0.6 ohm coil at very close to 4.2V, I was getting 3.2V under load. When they were new on the same mod and coil, they were making 3.8V.

A shot of them both with wrapper on:

And with a wrapper off:

There was nothing wet inside, the battery casing is intact and there is no discoloration on the wrapper. It is the way the wrapper sits on the casing

BTW, the Sony 18650VTC4 have less voltage drop than these did when new and after almost two months of use I think they are not degrading as fast, but it may be a bit early yet to tell for sure.

 

[emus]

I just ordered FT shrink wrap so I may have some pics this year too

 

[atomizer mizer]

Capillary action caused some VG to seep under my Sony batt shrink wrap.

Perhaps some other's batts got exposed to a drop of liquid?

Exactly my thoughts emus. It looks like liquid has seeped under the heat shrink. Most likely to occur at the bottom of a battery than the top depending on how it lays while being used and stored.

 

[Vaep]

I saw this thread a few days ago. The next day I accidentally sat on my mod and it was very hot when I found it.. Battery wasnt fully drained, coil was black, wicks were dark brown, switch insulator wasn't melted, but my mod was very hot top to bottom. I took out the battery and it looked normal, no dark spots....threw it on the charger...the next day I used it with no problems but when I went to switch it out, I found these spots... Notice the 'spikes' and weird pattern it made. Battery is a VTC4 that ive had for about a month.

 

[atomizer mizer]

I saw this thread a few days ago. The next day I accidentally sat on my mod and it was very hot when I found it.. Battery wasnt fully drained, coil was black, wicks were dark brown, switch insulator wasn't melted, but my mod was very hot top to bottom. I took out the battery and it looked normal, no dark spots....threw it on the charger...the next day I used it with no problems but when I went to switch it out, I found these spots... Notice the 'spikes' and weird pattern it made. Battery is a VTC4 that ive had for about a month.

Did you stand the battery up in the first picture before lying it down? It looks like a liquid has leaked onto the green cloth which appears to have left a stain the same diameter as the exposed metal on the negative or positive end of a battery. If it is still fresh, smelling it might give you an indication if it is eliquid?

 

[Vaep]

Did you stand the battery up in the first picture before lying it down? It looks like a liquid has leaked onto the green cloth which appears to have left a stain the same diameter as the exposed metal on the negative or positive end of a battery. If it is still fresh, smelling it might give you an indication if it is eliquid?

No smell.. And I doubt its eliquid because Im using a dripper with no holes on the bottom.

It's strange that the spotting didnt show up until the next day after I overheated the bat...

Also, everyones bats seem to be spotting on the negative end..

 

[patrao_n]

Just to rule something out. I use a reo grand. So its a top firing mod. I have the same discoloration. Battery has never heated up. So this can not be from having a bottom firing mod. Its probably just a thin wrap and its adhering much better to the metal casing in that area.

Sent from my SM-N900T

 

[MESAZAK]

Would be interesting to see the cause. I have this on two of my sony VCT4's and a VCT 5 that is starting to show discoloration. I've had it a couple weeks. I have a red LG in my rotation that is fine and has been in use a month and a half.

 

[Mikey-Mike]

I have the same issue with my VTC 5's. However i did thave a contact protection liquid on the bottom contact on the nemi, two got the same discoloration. One was new in the rotation after i took of the contact grease. The third one now has the same too. I vape .29-.42 in a dripper. i have no idea what it is.....

 

[Holer]

I've got 2 VTC5's that I bought less than a month ago, I have been using one everyday, the other used a few times. The every day battery
has the "watermark" on the negative end, the still new one does not.

 

[Switched]

Interesting read. There has to be a common denominator here. I have been vaping for 4.5 years + and have never seen anything of the sort on any of my batteries. The only thing I can think of, is that our batteries are wrapped in shrink wrap, and overheating the battery will cause it to shrink more perhaps thinning the wrap in that area. Hey, I am just guessing here.

 

[MESAZAK]

here's a shot of my affected batts


Sent from my iPhone using Tapatalk

 

[AmandaD]

I have three of the VTC5s, all purchased from RTD within the past couple of months, and they're all doing this. I use them exclusively in one Reo.

 

[casper22]

Interesting. Look at this. I have been having the same issue with my sonys but this is new. There looks almost to be mold or spores growing. They work great, dont get hot, and there is no cracking or smell

 

[Sgt.Rock]

Got it here too...My conclusion...It's from your switch lube!

 

[Sirius]

I had the same thing happen to a Sony 18650..I haven't used them since.

 

[AmandaD]

Mine have all been like that for months - still working fine!

 

[Sirius]

Mine have all been like that for months - still working fine!

The green was actually coming off of mine. I got those things off eBay and haven't bought a battery from eBay since. I don't trust that site anymore!

 

[mommabird62]

I order my batts from RTD most of the time and so far mine haven't done this. Will keep an eye on them tho.


Sent from my iPhone using Tapatalk with my paws

Mommabird62

 

[Ryedan]

The green was actually coming off of mine. I got those things off eBay and haven't bought a battery from eBay since. I don't trust that site anymore!

Do you mean the plastic wrapper was coming off?