Thank gawd I can only post in the new members forum, since I'd be even more embarrassed to display my ignorance of voltages, mAhs, resistances, and the like elsewhere on this site! 
I'm using ego-C 650 mAh batteries (3.3V according to the user manual), and about to place an order for some Stardusts from GotVapes.com. I already have 3 of them that I've been using for a couple of weeks now -- they're working fine but I'm not clear about how long they'll last, or even how I'll know when they need to be replaced (I'll save that for another post), but figured they'll die eventually and I should have replacements on hand.
I'm noticing that there's two versions available from GotVapes: 2.5-2.8 ohm and 2.1-2.4 ohm. Either there weren't two options when I placed my original order, or I simply didn't notice. In any case, the ones I have now are 2.5-2.8 ohm.
Is this distinction related to the mysterious (to me) concept of low resistance vs. standard resistance? If so, I'm guessing 2.1-2.4 ohm would be low resistance?
Are both versions compatible with my 3.3V 650 mAh batteries? If so, what's the difference(s) between them?
Thanks for any enlightenment you can offer!
Jerry

I'm using ego-C 650 mAh batteries (3.3V according to the user manual), and about to place an order for some Stardusts from GotVapes.com. I already have 3 of them that I've been using for a couple of weeks now -- they're working fine but I'm not clear about how long they'll last, or even how I'll know when they need to be replaced (I'll save that for another post), but figured they'll die eventually and I should have replacements on hand.
I'm noticing that there's two versions available from GotVapes: 2.5-2.8 ohm and 2.1-2.4 ohm. Either there weren't two options when I placed my original order, or I simply didn't notice. In any case, the ones I have now are 2.5-2.8 ohm.
Is this distinction related to the mysterious (to me) concept of low resistance vs. standard resistance? If so, I'm guessing 2.1-2.4 ohm would be low resistance?
Are both versions compatible with my 3.3V 650 mAh batteries? If so, what's the difference(s) between them?
Thanks for any enlightenment you can offer!
Jerry