http://www.e-cigarette-forum.com/for...-question.html
According to this guy:
The critical factor for ecig mod use is the C rating (discharge current) in amps. The minimum possible value for safe and effective ecig use is 1 amp (= 1000mA) although ideally it needs to be higher. The ideal rating is 2 amps (2000mA) or better as an atomizer usually draws 1A to 2A.
1.5C for ultra/sure/trust/-fire Li-ion
8C for AW 14500 and 16340 IMR (Li-Mn)
10C for AW 18650 IMR (Li-Mn)
Max drain rate in amps is C in mAh / 1000 x C rating
Example: an AW IMR Li-Mn 14500 battery has a capacity of 600mAh. The C rating is 8C (it can supply 8 times the capacity). Therefore the max discharge current in amps is:
600 x 8 over 1000 (600 multiplied by 8 divided by 1000)
= 4800 / 1000
= 4.8 amps
I had no idea a single IMR 14500 was rated for ALMOST FIVE AMPS.. Jesus on the moon.. that means that the
IMR 14500 is actually rated what almost 25% higher than generic 18650s (I get 3.9A if I did the math right .. 2600x1.5C rating/1000=3.9).... that's surprising as hell, to me, that any 14500 would be rated as high or higher than any 18650