The larger the heatshrink, the thicker it will get. So for most flashlights its best to use a heatshrink that doesnt have to shrink very much.
Thanks for clearing that up guys. I didn’t want to end up picking up the wrong ones.
Thanks for the write up HKJ. Just broke the wrapping on one of my keeppower 18650 and was looking for the wrap to fix it.
That is actually easier than I thought.
nice crisp tutorial thanks!
;)
awesome tutorial
I agree.
Super job!
Thanks. An excellent write up.
Fine tutorial
Nice tutorial and thanks for all the extra info on supply and sizing. Really helpfull.
Thanks for posting this tutorial. Very Nice!
Great info, need to do this on 2 batteries and stop using tape on em. Didn’t think a hair dryer could manage. Now I know. Thanks
That was the reason I made this tutorial. It is easy and cheap to make a good repair, instead of doing a unsafe repair.
I did play a bit around with the hair dryer, coving part of the air intake with a hand, did increase the temperature and made it faster to shrink the heat shrink, but be careful with doing it, it can damage the hair dryer.
Does anyone have another source for different collars ? And I have some 18650 and I need button tops where can I buy them
excellent ! thanks Hkj
I’ve heatshrinked well over 1000 cells, I’m quite good at it now. 
I couple additional tips. Heatshrink the positive end of the cell first by rotating the cell 360 degrees in your hand. Then go to the bottom of the cell.
Secondly, heatshrink along the crease from end to end. Use a low enough temperature or point the heatgun at a distance so it shrinks slowly. This prevents a wavy effect.
After this is done, give the entire cell a quick pass over by the heatgun to shrink the rest.
how on earth did you manage to heat shrink a 1000 cells ? Do you work in a cell manufacturing factory???
I was wondering the very same thing, unless he owns and wraps every Redilast??? 
Or maybe has a severe addiction
:bigsmile:
When I first started Redilast, I would do a good part of the heatshrink work myself. Now days I just do it occasionally… Quality control.
On a side not if you plan to do heatshrinking make sure your heatgun has a low mode. And avoid harbor freight heatguns. I had 2 fail on me in a 2 month period. And not to mention when you first get them, they smell smoke and smell bad… My wagner brand one for $17 from home depot is holding up great and is used several times a week.
Cool beans.