Dark spot on battery, is it safe? more battery questions

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Marcus94

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Apr 15, 2018
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Alright sorry this might be a lengthy one but I posted something and got very good responses from the community so I figured I'd ask some more questions.
I took my 3 batteries out to charge them and noticed a rather large dark spot on the negative side (Samsung inr18650 30Q) There's 4 small creases or wrinkles that run along the battery(one runs from the positive to the dark spot on negative) so I put all the batteries in a case and am going to toss them and get some new ones. I've only charged them 5 times, always charging and discharging together. I got 2200 puffs out of them but I've only had them 3 weeks(batterys tends to last 3-4 days 2200puffs/21days=105puffs a day which would be about 420 puffs per charge, usually using in between 50-70W) is 105 puffs a day to much? Anybody else experience dark spots on batteries? I hate to think I'm doing something wrong somewhere and stressing the batteries...When I buy new batteries should I full charge them right away or discharge them first then full charge them? When using them should I run them down until my mod says low battery before charging or take them out earlier?(I never did let them get low enough for my mod to say low battery) Also I don't have a multimeter so I can't tell if I'm maybe overcharging them or over discharging them. So I'm going to buy 3 new batteries and a multimeter. So info and hypotheticals aside really my questions are, what can I do to keep my new batteries from doing this? Based on my info could I be making an error? Has anybody else had this problem? Another area I'm confused is in a 3 battery mod does that automatically mean I can use let's say as an example (3.0Vx3=9v 100W/9V=11.11Amps) I'm confused because somebody was telling me something about battery's running parallel or opposite and completely threw me off because if the equation is with say 6V (100W/6V=16.66) its past the safe discharge rate for my batteries. I can't figure it out, since there's 3 batteries, 2 run parallel to each other but there's also 2 that run opposite of each other. I can't seem to find anything on this other then info on 2 batteries which I can't seem to apply because it's both cases, 2 run parallel and 2 run opposite of each other. A little insight here would be great.
 

Izan

Vaping Master
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Jul 1, 2012
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Hi and welcome,
It's just arc marks from dirty contacts (finger oils, e liquid, dust, etc.)
Clean all contacts (battery +/- and mod contacts) (I use SS mesh) and then apply a bit of deoxit gold
https://www.amazon.com/DeoxITGOLD-L...e=UTF8&qid=1426258348&sr=8-11&keywords=deoxit

Quality, branded batteries; charged in a quality charger should be fine for 300-500 charge/discharge cycles before needing to be replaced.

New batteries should be fully charged before use.
The device will handle the heavy lifting.
If you know more than the device, then act accordingly.
If the device is designed for one purpose and has safety features incorporated...Perhaps trust the device. (it's not smok is it?... sorry, just kidding...kinda)


Cheers
I
 

Marcus94

Full Member
Apr 15, 2018
9
8
30
Hi and welcome,
It's just arc marks from dirty contacts (finger oils, e liquid, dust, etc.)
Clean all contacts (battery +/- and mod contacts) (I use SS mesh) and then apply a bit of deoxit gold
https://www.amazon.com/DeoxITGOLD-L...e=UTF8&qid=1426258348&sr=8-11&keywords=deoxit

Quality, branded batteries; charged in a quality charger should be fine for 300-500 charge/discharge cycles before needing to be replaced.

New batteries should be fully charged before use.
The device will handle the heavy lifting.
If you know more than the device, then act accordingly.
If the device is designed for one purpose and has safety features incorporated...Perhaps trust the device. (it's not smok is it?... sorry, just kidding...kinda)


Cheers
I

Right on good to know, and lol yes it's a tpriv3. Are smoks not trustworthy?
 
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Marcus94

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Apr 15, 2018
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when iv had dark spots it was moisture, it went away after a wipe and re-wrap, any chance its wet?

Could be, after inspecting the battery closely I noticed a tiny pinhole on the positive side (can't tell if it's just a dent in the wrap or If it's all the way through) where the wrap slightly sinks into the battery near the positive side and I have handled them very carefully so the hole only worries me. Definitely just going to be safe and pick up some new batteries.
 
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Marcus94

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Apr 15, 2018
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Bit hard to see but here's a pic.
 

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stols001

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May 30, 2017
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It looks like the possibility of some e-liquid seepage to me. I've had similar things happen to a battery and after wiping it down, I didn't worry too much about it (after being told I need not ditch the battery, but that's been accurate). The dimple (which I think I see, athough it's hard to see) might be a different matter. I'd follow Izan's recommendations re: arcing, too, but you may well be able to salvage your batteries or not, but if you are concerned (you are the person vaping) I also wouldn't hesitate to tell you to replace your batteries if you are concerned about them.

It's actually probably better for battery life if you don't discharge all the way to "low battery." I try to pay attention to that (I sometimes fail) and get the batteries out a bit sooner. It's my understanding with new batteries, if you plan on using them right away not storing them, that one should charge to full prior to use. Batteries come partially charged because they store better that way, so if you have some as backups, you may want to leave them in their partial charge state.

Best of luck,

Anna
 

Marcus94

Full Member
Apr 15, 2018
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@stols001 Right on thanks, think you covered it all. I hate to have to ask all these questions but I think I'm pretty much good now as far as batteries go (for regulated mods anyway)

Think I'm going to grab an RDA when I go pick up some batteries, It'll give me something else to figure out. Just out of curiosity, what batteries do you use?
 
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Baditude

ECF Guru
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img_0176-png.736617


I doubt that is a liquid mark or arcing. I would think e-liquid marks would be irregularly random shaped, that mark is completely straight. Arcing would most likely be just on the positive or negative metal ends of the battery.

It just looks like something on the metal can that is showing through the semi-transparent wrap. No idea what it could be. Could be an air pocket where adhesive from the wrap loosened up. It almost looks like something printed is showing through on the end of the battery. I wouldn't worry about it if it were me.

I use the same batteries (seven Samsung 30Q 3000mah 15A).

Charge batteries when you first get them. You don't have to drain them prior to recharging them; you're thinking of nickle cadium batteries which had memory.

Battery Basics for Mods: The Definative Battery Guide for Vaping
 
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