Just finished my 2nd full battery on the Koopor. Got 520 puffs and 1,600 seconds @ 450F on a 0.3Ω Ti coil. That's on a Samsung 30Q 3000mAh battery. This is 53% longer than what I got yesterday on my 25R (1,039 seconds on a similar Ti coil).
So, any rumor you hear about "bad battery life" does...