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Using parcel tape to cover batteries?

conanthewarrior

Gold Contributor
Member For 5 Years
Hi people. I removed the wrapper, made of plastic, to one of my 2900MAH Efests to see if it was a rewrap. It did not appear to be, so may be their first in house.

But, alas, in doing so I destroyed the casing. The casing is a plastic material, so is the parcel tape I own. I hae done 2 layers of it, and also left a few MM at bottom and top, nipped in to them so they would stick down flatly, and have rewrapped it. I attached the Efest scratch off sticker to the newly wrapped battery, but as it was wrapped in plastic before, and is again, I see there should be no issue?

What do people think, a complete cover of plastic is safe, or to just wait for shrink wrap.
 
Last edited:

Jon@LiionWholesale

Silver Contributor
Member For 4 Years
Unlisted Vendor
Good question. I wouldn't chance it. Not sure what happens when it gets warm...if it melts or peels off you could have a safety issue.
 

conanthewarrior

Gold Contributor
Member For 5 Years
I am using duct tape for now. Thick enough, and I have allowed 2-3 MM top and bottom over hang, I nipped into these with scissors all the way round so I could lay them flat. Looks quite cool, a silver battery.

I put the Efest scratch sticker on the battery so I do not confuse it with anything else, but I think the big permanent marker down the side saying "Efest" should do the trick too lol.

As soon as I can I will order a good few meters of 18650 heatshrink though.
 

BrattVapes

Silver Contributor
Member For 4 Years
Member For 3 Years
Member For 2 Years
How do you guys re wrap your batteries? I have a few that need some re wrapping done but I don't wanna go to the B&M and pay 3 times what it would cost for the material to do my own forever.

Thanks :)

Edit:

I just need to know where you guys get your wrap from... Ebay??
 
Be careful if you perform your own rewrap. YES, you can get some heat shrink and DIY, but unless you do a CAP and internal impedance check prior and post to rewrap you will not be able to tell if you caused any damage to the battery internally. Most vape shops I know, don't even know how to do these tests. However, for a few bucks you're trying to save, it may be better to buy new batteries and not worry about safety problems notorious to rewraps. Just my honest opinion.
 

conanthewarrior

Gold Contributor
Member For 5 Years
Be careful if you perform your own rewrap. YES, you can get some heat shrink and DIY, but unless you do a CAP and internal impedance check prior and post to rewrap you will not be able to tell if you caused any damage to the battery internally. Most vape shops I know, don't even know how to do these tests. However, for a few bucks you're trying to save, it may be better to buy new batteries and not worry about safety problems notorious to rewraps. Just my honest opinion.
But the batteries literally ripped on the day I got them, two tiny holes at the top of one. Its got electrical tape over it for now, but I thought a rewrap would be better? I've got more batteries on the way, but each cell I have previously unwrapped has nothing there, so I didn't see how rewrapping would be a problem? It was almost impossible to not get the rip in the mod I was using, so just thought it would be safer to re wrap than tape them, as another member advised (Electrical tape, not parcel).
 

art247

Member For 4 Years
we have a place here that is called
batteries plus ive not been there but other vapers say they can rewrap 18650s if you dont want to wait i dont know if its easy on the wallet they may be able to check it for free
 

Zamazam

Evil Vulcan's do it with Logic
VU Donator
Platinum Contributor
Member For 5 Years
Conan, use a length of heat shrink tubing suitable for batts, you can buy a 10 meter roll cheap from fasttech. Since you were a gaffer, you can use some of the vinyl gaffers tape as a hold over for a while. I have a big roll and have used it myself as a patch until I could get some heat shrink tubing.
 

conanthewarrior

Gold Contributor
Member For 5 Years
I always was under the assumption a rewrap was a regular thing to do? Like what could go wrong? I understand taking the wrapper off exposes the negative close to the positive, but this is where the small chips in the wrapper are.

I thought as long as you used just a hairdryer, and the shrinkwrap for batteries it would be OK to do yourself? A few vapers with lots of viewers even do tutorials on youtube on how to re wrap, thats why I thought it was safe, as a nick here or there on the battery is inevitable, and as the wrap was easy to buy in lengths I thought you just measured it out, allowing an exta 2-3 MM a side, then applied a hairdryer on hot and that was it?
 

conanthewarrior

Gold Contributor
Member For 5 Years
I thought rewrapping was fine, It was just a new member JJJaymans comment worried me, but I realise that it is not possible to cause damage or anything, the batteries are more dangerous If I do not rewrap them. I am going to order 10 meters of the stuff on Monday, should get it the next day or latest wednesday, its ebay so a few pounds more than fasttech, but I will get it quicker.

Like next saturday I am ordering a SMOK Xcube 2, I ordered 4 25R's from there(genuine ones, seems quite a few people use them) but also ordered a set of VTC4's incase they are not here in time for the Xcube 2.
 

conanthewarrior

Gold Contributor
Member For 5 Years
Be careful if you perform your own rewrap. YES, you can get some heat shrink and DIY, but unless you do a CAP and internal impedance check prior and post to rewrap you will not be able to tell if you caused any damage to the battery internally. Most vape shops I know, don't even know how to do these tests. However, for a few bucks you're trying to save, it may be better to buy new batteries and not worry about safety problems notorious to rewraps. Just my honest opinion.
Is there any truth to this? I will be applying less heat than the batteries experience in use, moving the hairdryer around just enough to get it to shrink in place.
 
So
I thought rewrapping was fine, It was just a new member JJJaymans comment worried me, but I realise that it is not possible to cause damage or anything, the batteries are more dangerous If I do not rewrap them. I am going to order 10 meters of the stuff on Monday, should get it the next day or latest wednesday, its ebay so a few pounds more than fasttech, but I will get it quicker.

Like next saturday I am ordering a SMOK Xcube 2, I ordered 4 25R's from there(genuine ones, seems quite a few people use them) but also ordered a set of VTC4's incase they are not here in time for the Xcube 2.
Sorry I have been busy and couldn't respond earlier. I didn't say you couldn't or shouldn't do a rewrap, I said "be careful". Yes, things can and have gone wrong, so NO its not 100% completely safe. As far as battery design and heating up, batteries are "cells" which by design heat from the the center out do to the speed of current (<-amps) generating the electrical DC power during the draw. There are way to many factors to go into details but this is in general. So, by heating the outside of the battery (during things like a rewrap) you can break down the internals of the battery, which can cause other issues. One, degraded capacity hence the reason for a CAP check; two, drastic increase of internal base RI (impedance/total resistance) of the battery change (which naturally occurs over time from recharging at a much slower rate); and three, venting a battery. Although venting/exploding a battery is unlikely to occur, does not mean it will not. Keep in mind there are proper tools design (not just a hair dryer) to perform this function of heat shrinking electrical components and batteries which deflect direct heat in other ways. These are just my opinions and I want people to be safe to eliminate someone from getting injured or worse (we have all seen pics of battery issues, we don't need another that will hurt the Vape community). **NOTE, Not everthing you see on youtube is correct or safe** My experience: 2 degrees, 20 years Air Force in electrical aviaton systems.
 

conanthewarrior

Gold Contributor
Member For 5 Years
Th
So

Sorry I have been busy and couldn't respond earlier. I didn't say you couldn't or shouldn't do a rewrap, I said "be careful". Yes, things can and have gone wrong, so NO its not 100% completely safe. As far as battery design and heating up, batteries are "cells" which by design heat from the the center out do to the speed of current (<-amps) generating the electrical DC power during the draw. There are way to many factors to go into details but this is in general. So, by heating the outside of the battery (during things like a rewrap) you can break down the internals of the battery, which can cause other issues. One, degraded capacity hence the reason for a CAP check; two, drastic increase of internal base RI (impedance/total resistance) of the battery change (which naturally occurs over time from recharging at a much slower rate); and three, venting a battery. Although venting/exploding a battery is unlikely to occur, does not mean it will not. Keep in mind there are proper tools design (not just a hair dryer) to perform this function of heat shrinking electrical components and batteries which deflect direct heat in other ways. These are just my opinions and I want people to be safe to eliminate someone from getting injured or worse (we have all seen pics of battery issues, we don't need another that will hurt the Vape community). **NOTE, Not everthing you see on youtube is correct or safe** My experience: 2 degrees, 20 years Air Force in electrical aviaton systems.
Ok, thanks JJJAYMAN. I will do the rewrap, as they are more dangerous in their current state, and it will be moving heat, less than the batteries get heated to in some of my mods. Some of my mods the Atty gets scorching, and travels down, and I get a TEMP HIGH warning, remove the atty it goes straight away, keep it connected it takes about a minute to cool down a bit.

I was thinking as it will be less heat than they are usually exposed to, it shouldn't be a problem.

BTW, when I said about your low post count it was not meant as an insult, I just did not know how much you knew about batteries/ electronics. I may type things that come across a bit wrong sometimes, this could be one of them. I am brain damaged, so tend to not think through properly before typing. It is not severe damage though, like I am safe enough to use a mech, just takes me a bit longer for things to sink in, and it affects decision making and actions E.G I will be quicker to anger, although I am getting better in that regard now.

Hope I didn't offend you in anyway, I find everyone to be a friendly bunch on here, hopefully myself included lol.

I just didn't know if you was a 15 year old who had heard from a friend it was unsafe, or like you said, an expert on electronics for 20 years.

Thanks for your advice :).
 

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