Ah, I love my hex ohm 2.1 I do, but it has atendency to make wee nics in the wrapping of my batteries. This can be dangerous for reasons others explain far more eloquently on ECF. I recently made an order with, Battwrap, PVC Battery Wrap - which are run by Illumn.com - Flashlights, Batteries, Carry Gear, Intelligent LED Lighting, and More! and was very pleased with the product and results.
I got 120 wraps - various quantities of diff colors, sold in 10 packs - for 12 bucks including shipping. These are presized for 18650s. You do have to trim a wee bit off the top but if you are super lazy like me about this kind of thing, it is stil easier than sizing the whole thing out from scratch.
The wraps are good quality too. Of course you can get 20 miles of wrap from amazon for 6 bucks and size it yourself, but for me the laziness factor was more than worth it.
Here is how much I trimmed:
The originals in their bag:
Here is what I did:
1. Carefully took off the old wrapper by running scissors over the body of the battery - GENTLy - just enough to cut the wrapper, then I tore the rest off.
2. Trimmed the top off the new wrapper (without trimming it didn't completely shrink to fit)
3. Slid on the new wrapper, holding the top black plastic disc in place with 1 finger, then the bottom of the battery with another finger -- leaving about the same extra space at the top and bottom of battery.
4. Used a hairdryer to do the top most of the way first, so the black plastic thingie didn't go flying away.
5. Then just rolled the battery around on an office chair using the hairdryer to roll it back and forth a few times. (The desk is all used up with puter bits and scrawled to do lists for my job, the coffee table covered in mods and juice what you going to do?!) Then did the rest of the top and bottom, and main body again until it was all smooth.
When using the hairdryer don't scorch it just apply enough heat to make the wrap shrink to fit the battery. I found letting the hairdryer blow it around the chair also avoided scorching my fingers. Yes, laugh, go on... I'm comfortable with my manliness. I REWRAPPED A BATTERY FOOL! Anyways...
Now I don't have to worry about safety and the P3 seems to have confirmed success by no longer complaining about battery quality. (I think the nics were throwing it off).
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