Great batteries are dirt cheap these days. Use them, abuse them, replace them. In my old 'Evercool', a stacked mod, I'd often drag one cell down to ~2.2V.
Codling batteries in hopes of getting a few more cycles out of them is not for me.
Well I feel no kinship with the new breed of vapers.
A prime example:
These aren't the folks I'd choose to hang with, nor would I want any potential new vapers to see this. Obviously 'tons' of fun at the buffet though.
Even GrimmGreen. Ever seen his neck statement?
I don't know much about art, but this ain't it.
Fasttech has many well reviewed mechs for <$20 and atties at ~$10. And the #1 HD batteries in the world, with an unblemished safety record, are less than <$7.
There is also this reasonably priced alternative.
http://www.vaportekusa.com/hcigar-dna-40-authentic-evolv/
The advantages are a spring loaded 510 pin, inbuilt charging and venting. Note venting will help to keep the chip assembly running cooler.