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The occuring power is split in any case.
Basically there is no difference between regulated and unregulated. Look at my example and change "atomizer" with "chip" for regulated...generally electrical load.
Basically there is no difference between regulated and unregulated. Look at my example and change "atomizer" with "chip" for regulated...generally electrical load.
Unregulated mech mod governed by Ohms law
2, 4V batteries (4V supplied) with a 0.2 ohm load in parallel provides 20A in current
2, 4V batteries (8V supplied) with a 0.2 ohm load in series provides 40A in current
Considering this thread was started by the OP asking about a regulated power device, the cross pollination of mechanical / unregulated serves only to confuse.
When using a regulated power device (what this thread is about) it is quite simple.
In regulated devices it makes no difference whether the battery arrangement is in series or parallel.
The 'chip' controls input & output, most if not all decent regulated power devices have both input & output amp limits.
Input from the battery(s) to the chip.
Output, from the chip to delivery device.
The chip draws whatever is necessary from the cell(s) to provide the set power range, that is draws whatever is within the chips input amp limit.
The buck/boost converter, chip, regulator, magic gizmo board (whatever you want to call it) in combo with the power devices saftey features regulates both input & output.
For regulated power devices;
Watts / volts = amps.
Using a regulated device amp demand will be highest at the low voltage cutoff.
Everyone has to set their own saftey limits, even using regulated devices.
The first wattage number is my personal maximum, the second watt number is maximum at a 3v low voltage cutoff.
50w - max 60w per 20a CDR cell
65w - max 75w per 25a CDR cell
80w - max 90w per 30a CDR cell
Per each individual cell.
Why do I use 3v when most of my devices cutoff at 3.2+v?
Added saftey margin, vaping isn't a hobby or competitive sport to me, I want the piece of mind.
@Eskie I know how Ohm's law works. What I did not know was how do regulated mods behave with parallel batteries. After heaps of false info, I'll take @Joergl100 's word.
Actually, after giving it some thought, the absence of load split in parallel builds would be illogical. Well, at least in high power applications.
Thank you all for your insights, I'll make sure to update the thread when I get my Sony VTC5s and El Diablo RTA's clone.
Actually, after giving it some thought, the absence of load split in parallel builds would be illogical. Well, at least in high power applications.
Thank you all for your insights, I'll make sure to update the thread when I get my Sony VTC5s and El Diablo RTA's clone.
@Eskie, post #24:
Sure! Doubling the voltage at the same resistance multiplies the occuring power by four!
4V at .2 ohms results in 80 watts. 8V at .2 ohms results in 320 watts.
@Unnatural wrote: "...the absence of load split in parallel builds would be illogical. Well, at least in high power applications."
In every application.
I do not really like that mAh-thing...i prefer calculating in Wh, because that is the real available energy!
Sure! Doubling the voltage at the same resistance multiplies the occuring power by four!
4V at .2 ohms results in 80 watts. 8V at .2 ohms results in 320 watts.
@Unnatural wrote: "...the absence of load split in parallel builds would be illogical. Well, at least in high power applications."
In every application.
I do not really like that mAh-thing...i prefer calculating in Wh, because that is the real available energy!
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It really is a shame that folks seem to need to debate series / parallel for mechanical / unregulated in a thread specifically about regulated power devices.
No matter which way you try to slice the mustard, in a regulated device the cells share the load, but 2 25a cells do not = 50 available amps because most if not all have input amp limits.
The chip has a maximum set amount of amps it will draw from the power source / battery(s).
There is always a chance of a battery sled / mount / wiring going wonky & pulling from one cell more than another.
Parallel, 2 cells at 3.2v at 100w = 31.25a (aka 15.625a each)
Series, 2 cells at 6.4v at 100w = 15.625a (or, 31.25a shared)
Regulated power devices;
W/V=A ~ per number of cells.
No matter which way you try to slice the mustard, in a regulated device the cells share the load, but 2 25a cells do not = 50 available amps because most if not all have input amp limits.
The chip has a maximum set amount of amps it will draw from the power source / battery(s).
There is always a chance of a battery sled / mount / wiring going wonky & pulling from one cell more than another.
Parallel, 2 cells at 3.2v at 100w = 31.25a (aka 15.625a each)
Series, 2 cells at 6.4v at 100w = 15.625a (or, 31.25a shared)
Regulated power devices;
W/V=A ~ per number of cells.
It was my fault for bringing in unregulated mod behavior in first place in error thanks to my misreading/skimming. You'll be fine with your setup and the information provided has been accurate, if not necessarily relevant regarding the introduction of a mech by me.
I think it's a question of keeping things "simple" , otherwise, you(we)'d have to start considering the impact of actual battery voltage as no longer a constant of a fully charged 18650 at 4.2V (or whatever number you want to start with) with the moment that you hit that button, then the variation in resistance due to heat, chemical age of each batteries, and so on.
The difference in behavior and load handling between a mech and a regulated mod is also very different, and efficiency can be as low as 80%, but can be up to 95%.
Not sure where that Amp differential comes from. I'm sure that we do get some lower percentages of the total Amps., but that 50% thing, I'd be curious to the source of that figure is.
BatteryStuff Articles | Understanding Series and Parallel Battery Configurations
Serial and Parallel Battery Configurations and Information
Series and parallel circuits - Wikipedia
And considering that there's been multiple threads on here about the same thing, it can be extremely confusing for some: (example) Confusion about dual Batt Box mods and Amps
But even then, one would have to be reckless to be trying to see how far he can push his batteries and mod, I've never known anyone that would even come close to it, unless they do it by accident, don't know what they're doing, or testing purposes.
I find this an odd statement.
As it's just a calculated figure (voltage * Amp-hours) it's not really a "real available energy", at least nothing exactly different from using mAh.
Should the draw on the battery be different than the rated output, you'd still have to do calculations, same as using mAh.
But if it works better for you, it's all good.
I would think that it depends how you learned it, like the metric or imperial system...
I don't see it as vague at all, if anything Wh would be to me, except for AC power.
https://www.quora.com/What-does-mAh-mean
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