Rewrapping batteries

[zoiDman]

I have two batteries that have nicks in the wrappers. The one ecig store near me doesn't rewrap them or sell wrappers.
Are some wrappers better than others? If I'm going to attempt this I want to do it right. Is there some recognized method to do this so I don't mess it up? I know I need a hair dryer which I think I have and a Wrapper and battery and that's all I know about rewrapping. Should I admit I'm just too ignorant to do this and buy two new batteries? I have a feeling I'm making this more difficult than it needs to be. Thanks for any advice.

Re-Wrapping a Battery is pretty Simple. But it is kinda one of those things that can take a Few Tries to perfect. And once you have Perfected It, you probably won't do it again for a Long Time.

Unless you are into Changing the Colour of you Batteries often. LOL

Here is a Good Thread that has Lots of Tips on All Things Re-Wrapping...

Rewrapping 18650s hints and tips?

BTW - These little Stick-On Insulators are Cool. And stops you from having to Search the Bathroom Floor because the Blow Dryer blew off the Insulator.

18650 Battery Terminal Insulators - 20pcs - Matte White

 

[ames001]

Isopropyl alcohol would be better (because it's not 60% water) and don't wear rings/jewelry while the battery is unwrapped (generally make sure your working surface is free of metal and that they can't fall/roll down).

I've heard of fried electronics but I think that usually means they're broken, not breaded and dropped into sizzling oil

hahaha.
no jewelry for this one. I kinda wish coconut oil was stable for frying xD, sadly, i have coconut oil tubs everywhere because of all naturals. i'm a bit too much of a crazy chemist for my own good.

thank you,though i did end up using isopro.... waited for 2 minutes for everything to be super dry, re wrapped.... stuck in rice because the person who put the wrappers over the batteries thought they might have had sweaty hands (i only have one thats fully functional)

 

[Grimwald]

The first time I did a rewrap I was apprehensive. Got everything ready for a long process. It was all over in a few seconds. Amazing how easy it was.

 

[DaveP]

Usually, I overwrap with a clear wrap without removing the old wrap. That way the markings on the battery are visible through the new wrap. I just make a label showing the brand and type of cell and the purchase date to go under the clear overwrap.

If I have to remove the wrap, I just use the same color that was on the old one and install it, then make a label with the brand and model, make a label with my Brother labeler, and overwrap it with clear.

Some wraps are thicker than others. If your mods are a tight fit, then thin wraps are best for an overwrap.

 

[Hawise]

The resistivity of 99% isopropyl is around 166kΩ/m (6*10^6pS/m conductivity), I wouldn't call that a good conductor.
http://www.panachem.com/msds/iso_propyl_alcohol_IPA.pdf

No, neither would I now that I've become better informed on the subject. And that's what I get for assuming...

 

[englishmick]

Some tips based on my experience.

Firstly, do get new insulators. At least the ones I got had sticky backs so they stay in place. The originals weren't sticky so they are harder to hold in place while you put the wrap on.

For heating I tried a hair dryer and it didn't work. Not hot enough. I know a lot of people use them though so maybe different dryers have different temps. I use a paint stripper heat gun. That has a nozzle which makes it easier to direct the hot air and heat the wrap without heating your fingers.

I write the details on the new wrap with a Sharpie. The wraps are very shiny and the writing comes off, so I cover it with some transparent tape.

 

[untar]

maybe different dryers have different temps

That and also different materials shrink at different temps.

I use a paint stripper heat gun

Same. While my hairdryer works it is noticeably slower and produces more wind than heat.

 

[untar]

stuck in rice

I hope the day people stop putting electronics in rice comes soon, can't take much more of this...
It's a myth, rice doesn't help, it even slows evaporation. Don't do it.
Some electronics repair shops may even refuse service if you put your device into rice.