I use a hair blow-dryer for the shrink ends and body, and afterwards use a lighter to remove or shrink the crease lines on both sides for a nice tight shrink. The flame from the lighter should touch in a buzz the crease to shrink it.
Is there a similar tutorial on installing cell protection PCBās. I got these cell protection PCBs and clear heatshrink from Fasttech and I intend to use it on my Samsung ICR18650-28As but Iāve no idea what to place in the positive end yet. :~
Some AA batteries have āremovableā button tops. āRemovableā because they are technically welded on with two tacks. Be careful unwrapping old AAs, an unwrapped cell is easier to short out in the trash bin than one with its wrapper intact.
You can make your own insulator rings with scissors and a paper holepunch.
I rewrapped my first cell a few weeks ago, using a method just like tatasal described in #76 a few posts up: Tutorial: Rewrapping a battery
hair dryer was enough to do most of it, used a lighter to tighten up the two creases down the side, and a few parts on the ends that didnāt shrink enough.
I used precut lengths of wrap from Illumination Supply (illumn.com) and hit one difficulty at first try. The groove behind the head of the unprotected pack pull batteries I was rewrapping is deep enough so if the shrink wrap is heated too much it shrinks excessively and splits when it shrinks into the groove. Very little shrinking is required which means minimal heat and taking care.
Thanks for the post. I just did a 12 pack of eneloops with a candle. Very easy to do.
The candle was nice because it is fairly consistent heat and I could hold the battery with both hands. Super easy and they came out nice. Just hold it above the flame a good distance and move the battery quickly.
Just a tip:
Iām using translucent shrinkwrap and put the label with brand/type/capacity underneath the wrap.
That way the label can never get loose or become unreadable through use.
One tip that may help save you some loss ā after wrapping and putting the identifier label on, add a label with your contact info (cellphone or email). The idea being, if you happen to lose your flashlight, you might get lucky with a good natured person finding it who, after opening it up to see whatās inside, would see your contact info on the battery.