You are correct no battery Can handle 40 amps which would probably be y I run two Sony vct5 in parallel so that I'm not hard shorting anything and the voltage drop on my mod is only .2~.4 so if you wanna get really technical I'm pushing (at .8 ohms with freshly charged cells) about 200~180 watts and 50~47.5 amps but none of this even remotely answered my question thank you and have a nice day... now can anyone answer the question I accually asked
Well it would have been one answer to your first post, but it's only now that you've mention that you're actually using 2 batteries, which is a completely different answer.
The short answer is if you want to get the same vape with a regulated mod as with your dual battery mech, you obviously have to use at least a dual battery regulated mod.
If you believe you are using 200 watts then you'd need a 200 watt mod; that would be the smy 12 volt 3 battery mod.
but in the original post; if you are vaping on a 0.1 ohm coil and you have 0.1 ohm losses , at 4 volts, that's 160 watts total but you're really vaping at 80 watts and losing 80 watts to excess heat lost.
From your figures, sounds like your measurements are about 5%-10% losses, so your vape power would be about 140 - 150 watts.