I searched the Segelei Corp website to see if they recommend a particular specification for batteries to use in this mod. I saw no such information.
Assuming this is a DNA device, Evolve the maker of the DNA chip, recommends an IMR battery with at least 12 amps continuous discharge rate. Going by this, the following IMR batteries apply:
AW
18650 1600mah 24A
LG
LG18650HE2 2500mah 20A
MNKE
18650 1500mah 20A
Orbtronic
Orbtronic 18650 SX22 2000mAh 22A
Orbtronic 18650 2500mAh 21A
Orbtronic 18650 SX30 2100mAh 30A
Samsung
INR18650-20R 2000mah 22A
INR18650-25R 2500mAh 20A
Sony
18650VTC3 1600mAh 30A
18650VTC4 2100mAh 30A
18650VTC5 2600mAh 30A
Efest IMR
red 18650 1600mAh 30A
purple 18650 2500mAh 35A* (rebranded LG18650HE2 2500mAh 20 amp*)
purple 18650 2100mAh 30A (rebranded Sony 18650VTC4)