Interesting concept, But I don't think it will last. Is it LI-ION ?
the first mod i made had a cell battery in it. the battery work a better than a 510 penstyle but not as good as an ego. i did fry the first battery i used because i knew nothing about charging circuits, the second was charged only with and ego charger. i made the mod over a year ago and used it for about 2 months before moving on to a better mod. the cell battery is still functioning and works in my phone. so as long as you charge it correctly and are not worried about battery protection it will work fine in mod.
Agree with BJ, MUCH Higher drain rate for what we use them for. Might get a few hits before it's dead, or blows up. Would not try it.
This battery is LiPo for Nokia. Its load capacity is normally no more than 1C, i.e. 850 ma. For vaping you need 2-3 times more. BJ43 is absolutely right: using this battery for vaping is dangerous.
If you want to make something with flat battery, seek for RC ones. There is a lot of them everywhere. They are cheap and have very good load parameters.