But is it safe to use in an omega
Since i don't own a omega or do I don't to much about it, I can't really give a concrete answer for it.
but theoretically going off by its posted stats:
Capacity: 2600mAh
Nominal Voltage: 3.7V
Length: 65mm
Diameter: 18mm
Max Charging current: 2.6A
Max Discharging current: 5.2A
Size: 18650 (Cylindrical)
Yes it should be safe to use on a omega unless your omega requires a current draw higher then 5.2A.
I = V/R 5.2= 4.2/ R
R= . 807
Even at its top voltage ( 4.2v fully charged) it would require a 0.80 ohm atomizer to push it past its max discharge rate of 5.2A. Even then the protected circuit should kick in and prevent that ( i'm assuming its has a protected circuit, you need to contact the vendor to make sure)
So answer your questions, yes it should be safe to use on a omega since by its stats it pretty much the same size as the standard imr and its rated amp draw is more then enough the omega.