Nobody recommends these batteries?

[Mikey6]

What ends up happening is that 30 watts with a 0.1 ohm atty takes pretty close to the same battery amp draw as 30 watts with a 2 ohm atty even though the regulator output voltages are quite different in the two scenarios.

I might be completely misunderstanding this but I'm pretty sure there is a MASSIVE amp draw difference between these two scenarios.

Thumb smashed on my Galaxy Note 4

 

[Hobbs]

Samsung 25R (2500mah/20 amp)
LG HE2 (2500mah/20amp)
LG HE4 (2500mah/20amp)
LG HG2 (3000mah/20amp)
Sony VTC3 (1600mah/30amp)
Sony VTC4 (2100mah/30amp)
Sony VTC5 (2600mah/20amp)

I'm doing okay with the LG HG2's ... and an xtar charger

 

[beckdg]

I might be completely misunderstanding this but I'm pretty sure there is a MASSIVE amp draw difference between these two scenarios.

Thumb smashed on my Galaxy Note 4

It's 30 watts at battery voltage for battery draw.

30 watts at coil resistance for what happens at the atty.

Tapatyped

 

[Mikey6]

It's 30 watts at battery voltage for battery draw.

30 watts at coil resistance for what happens at the atty.

Tapatyped

Not 100% sure I follow, but I'll trust you on it. Seems like you have more knowledge on the subject than I do.

Thumb smashed on my Galaxy Note 4

 

[beckdg]

Not 100% sure I follow, but I'll trust you on it. Seems like you have more knowledge on the subject than I do.

Thumb smashed on my Galaxy Note 4

The regulator doesn't change battery voltage so the battery has to supply that 30 watts with its available voltage.

The regulator does set the voltage going to the atty. So the atty resistance and set wattage will dictate the voltage the regulator has to supply.

So at the atty you calculate your setting and atty resistance for output.

Tapatyped

 

[Mikey6]

The regulator doesn't change battery voltage so the battery has to supply that 30 watts with its available voltage.

The regulator does set the voltage going to the atty. So the atty resistance and set wattage will dictate the voltage the regulator has to supply.

So at the atty you calculate your setting and atty resistance for output.

Tapatyped

OK thanks. I was kind of thinking along that line with your first response but wasn't sure and didn't want to sound like an idiot.

Thumb smashed on my Galaxy Note 4

 

[beckdg]

OK thanks. I was kind of thinking along that line with your first response but wasn't sure and didn't want to sound like an idiot.

Thumb smashed on my Galaxy Note 4

Welcome.

Don't worry about getting everything right away. The subject can be complicated at times.

You're doing just fine.

Tapatyped

 

[Ryedan]

I might be completely misunderstanding this but I'm pretty sure there is a MASSIVE amp draw difference between these two scenarios.

Thumb smashed on my Galaxy Note 4

Yes there is, but those amp and voltage numbers are what the regulator puts out, not the battery . Remember, battery voltage is set at what it is at its current state of charge. Fully charged it will be close to 4.2V, when the mod decides to stop working due to low battery volts it's around 3.3V.

Here is the Steam Engine battery drain calculator. This is a much easier tool to demonstrate with than getting into the math calcs.

Have a look at "Atomizer - what hits your topper (atty)" and compare it to "Battery drain - what taxes your battery". When I open that page it defaults to 'Regulated VW', 1.9 ohms, 100 watts, 'Battery voltage = 6V (a dual battery mod with almost depleted batts)'. Battery drain amps is 18.52A from each, battery voltage is 3V from each and wattage drawn from the two batteries is 111.11 watts because of regulator inefficiency loss. Atty voltage is what the regulator puts out in that scenario, 13.78V, 7.25 amps and watts are 100 as set on the mod.

Change the resistance to 0.1 ohms and the numbers for "Battery drain - what taxes your batteries" are the same, but the atty sees 3.16V and 31.62A.

There will be some difference in battery drain that the calculator doesn't show because "APV efficiency (the regulator)" will be different for different voltage outputs, but that is typically +- a few percent so not really significant.

 

[Mikey6]

Welcome.

Don't worry about getting everything right away. The subject can be complicated at times.

You're doing just fine.

Tapatyped

Right away? I've been doing this vaping thing for 2 years, thought I knew a bit about it and some of the basic math. Never really got too into the pre and post regulator math though, so that's my defense (although I think I need to change that defense because of this thread now).

Thumb smashed on my Galaxy Note 4

 

[Spencer87]

Well thankfully it looks like this thread is back on track. If it stays that way, it stays open.

Remember to attack the post. Not the poster!　

 

[beckdg]

Right away? I've been doing this vaping thing for 2 years, thought I knew a bit about it and some of the basic math. Never really got too into the pre and post regulator math though, so that's my defense (although I think I need to change that defense because of this thread now).

Thumb smashed on my Galaxy Note 4

You'll be fine.

Consider that "right away" to apply to each new step. Some you may "get" right away. Others, you may never. And that's fine also.

Tapatyped

 

[beckdg]

Well thankfully it looks like this thread is back on track. If it stays that way, it stays open.

Remember to attack the post. Not the poster!　

Thank you sir.

Tapatyped