Re-wrapping batteries

[nehctik]

So I ordered some pvc shrink tubing from ebay today to rewrap some batteries, it looks as if I unwrap the batteries, keep the white circle insulator, stick the battery with the insulator on top in the tube of wrap and heat with a hair dryer, is it really this simple?

[mikedidthis]

Yep, I was surprised how simple it was. Do the end without the insulator, flip it over, do the end with the insulator. Done!

[igual]

Yep it is that simple, don't use a naked flame , if the insulator disk is torn,damaged you can replace with a bit of thin plastic cut from a milk bottle

[sydsut]

Yes it really is that simple. I use a heat gun as I don't have/need a hairdryer

[anon4]

Doing my first rewrap when the wraps arrive. X cube 2 ruined my 25rs with those stupid springs. They are well used but not ready to retire just yet and electrical tape is not a permanent solution!

[tim]

Just re-wrapped a dozen or so cells. It's easy, but does need a bit of practice. If you bought ready cut wraps, they may be too short/long for some makes. 18650's are not all 65mm tall. (Not sure about other sizes). Some are 0.5-1.5mm shorter/longer. I got some wrap on a roll, different colours too, so I wrapped them in order of age. Be careful to hold the positive insulator on or the heat gun (hair dryer) can blow it out.

[flavourtank]

Jul 8, 2016 23:08:41 GMT tim said:

Just re-wrapped a dozen or so cells. It's easy, but does need a bit of practice. If you bought ready cut wraps, they may be too short/long for some makes. 18650's are not all 65mm tall. (Not sure about other sizes). Some are 0.5-1.5mm shorter/longer. I got some wrap on a roll, different colours too, so I wrapped them in order of age. Be careful to hold the positive insulator on or the heat gun (hair dryer) can blow it out.

done a couple this morning and had the problem with insulator blowing about. But yes really easy, need to get some more shrink

[nehctik]

I kept blowing the insulator out too, and i found the hairdryer needed to be really hot, too hot for my fingers the the tubing i bought to work but all sorted now.

[phtumshk]

i use a dab of prit stick to hold the disc in place.
Its quite surprising to see how far the lil buggers can go on a warm breeze.

[anon4]

First rewrap job finished, my pair of 25rs look brand new. I just set the dryer to low and held the insulator down, once that side was done switched to high and blasted both sides. So easy. Want to do my 30qs next but the insulator is cracked on one of them, where can I get replacement in the uk?

[flavourtank]

Jul 12, 2016 11:51:05 GMT anon4 said:

First rewrap job finished, my pair of 25rs look brand new. I just set the dryer to low and held the insulator down, once that side was done switched to high and blasted both sides. So easy. Want to do my 30qs next but the insulator is cracked on one of them, where can I get replacement in the uk?

you can use a thick bit of card I.e cereal box. It's there to stop shorting. Ebay has loads on there and fasttech sell them

[Get Off My Cloud]

Just gonna say these clear wraps are a good idea.
www.fasttech.com/products/0/10012801/2155601-18650-battery-sleeve-pvc-heat-shrinkable-tube
You can either write the battery type right on the battery with a marker or slip a paper label inside, very useful if you have multiple battery brands and models or even to label pairs so they never get mixed up.
Being under the sleeve the labeling will never peel off or rub away.

[flavourtank]

Jul 12, 2016 11:51:05 GMT anon4 said:

First rewrap job finished, my pair of 25rs look brand new. I just set the dryer to low and held the insulator down, once that side was done switched to high and blasted both sides. So easy. Want to do my 30qs next but the insulator is cracked on one of them, where can I get replacement in the uk?

did you find any insulator rings from the UK?

[joeten]

Saw these on Ebay www.ebay.co.uk/itm/200pcs-cardboard-1x18650-battery-Insulators-Electrical-Insulating-Adhesive-Paper/331727859298?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D37432%26meid%3Da9ebf5645dd3489aaa83be8f175f2ade%26pid%3D100005%26rk%3D1%26rkt%3D5%26sd%3D321384842597 Appear to be cardboard.

[flavourtank]

Jul 19, 2016 20:10:17 GMT joeten said:

Saw these on Ebay www.ebay.co.uk/itm/200pcs-cardboard-1x18650-battery-Insulators-Electrical-Insulating-Adhesive-Paper/331727859298?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D37432%26meid%3Da9ebf5645dd3489aaa83be8f175f2ade%26pid%3D100005%26rk%3D1%26rkt%3D5%26sd%3D321384842597 Appear to be cardboard.

they come from China which is annoying