I'm not sure that the Eluma is the DSE902 model or that it is the same as the E9. The only reference I find to Eluma being the little known DSE902 is an
ECF blog post my cozzicon back in August of last year. [I respect Michael, but he is not infallible and was not quite as
vaping-savvy back then as he is today.]
I am not directly familiar with the Eluma, but based on what I see on
their website it appears to be the same as the original
blu and
Volcano, i.e., the L88 model, a mediocre performer. blu has since moved on to using cartomizers, but those male-connector cartomizers are
not E9/KR808D-2 cartos (which have a female connection).
Frankly, I recommend that you start from scratch with a
good model. If you like the super-mini size, I have been very impressed by the
Bloog Maxx Fusion and the virtually identical (and less expensive)
Smokeless Image VOLT. Their 65mm batteries yield a
relatively high-mAh* 103mm e-cig that produces great vapor, TH, and flavor.
* 220 mAh which doesn't compare to a 650+ mAh fat batt, but is higher than any other super-mini and even the 112mm Joye510 mini (180 mAh).