Max battery wattage and amperage in a regulated device is not calculated using Ohms Law.
Try putting 3 amp batteries in your regulated mod and firing it at 150 watts.
Then tell me if you still agree with that statement.
The board does the calculations. I'm not really following what you mean by that, to be honest.
Read this and then you can tell me if you agree with the statement Calculating battery current draw for a regulated mod | E-Cigarette Forum
The board determines what goes to the coil NOT what is being drawn from the battery(s). Your wattage setting determines the demand on the battery(s)
The only difference between what I am saying and what he is saying is that he is solving for amperage given wattage and voltage.
which instead of I=v/r and IV=W, you get I = w/v.
It's still ohms law. I don't see how that refutes my point.
Your statement above says a 20 amp battery is good for 84 watts, that is NOT the case in a regulated device.
if it is safe in a mech mod, it's applicable to a regulated mod because of the internal resistance on the device is higher than a mechanical mod. I'm talking about purely theoretical limits.
In practice, it's actually going to be lower at the same resistance, because of the internal resistance.
I'm not saying that it's the exact same thing, but it's not irrelevant with regulated mods.
Dude, the highest demand on a battery in a mechanical device is at a full charge, the highest demand on a battery in a regulated device is at low battery cutoff, then add the inefficiency of the regulator. THEY ARE NOT THE SAME.
Okay, if that's true, it's possible that I'm missing an equation for the right calculations.
I'd like to see it if you could share it.
Dude, the highest demand on a battery in a mechanical device is at a full charge, the highest demand on a battery in a regulated device is at low battery cutoff, then add the inefficiency of the regulator. THEY ARE NOT THE SAME.
Here is an example of real world unregulated mod operation. The build is .47Ω and the batteries are VTC5A charged to a full 4.2V.
View attachment 722665
Across the coil 7.8V is being applied.
View attachment 722667
Across the batteries we see the same 7.8V being provided (+/_ 1% approx) You can see the batteries come under load in the circled area.
The pair of series VTC5A's are running at 7.8V under a load of .47Ω providing approx 16A continuous and developing just over 124W.
This is where Mooch's recommended are essential to most of us who don't do actual measurements. We can still be safe.
As far as published specs, give me a break. Two battery mods running at 225W and 18650 batteries putting out 40A? Not real world.
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What model oscilloscope are you using? I was looking at getting one.
I got the Siglent SDS 1202X-E. Sweet scope at a sweet price.