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But for peeps like ME ... Who rarely go over 7.0 - 8.0 W ... Set BB at 4.75 and 3.0 ohms is just right!
AND maximizes batt life! ;-) Need 10 W then crank BB up to 5.50 ... But 4.75 - 5.00 with 3.0 ohms is perfect for some! ;-)
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Just wait till you get the book I sent..... Electricity for Dummies.....haha.
Man, this is awesome, I am getting ejuice left and right this week as Big Screen D sent some too. And I ordered from Alien Vapor along with Heathers heavenly vapors. Gonna be vaping with three or four devices all at once. Cool, just had a new idea, a dual rba device that goes into one tip.
LOL, "smells like fish you left out in the sun to dry" Ahggggg Ahggg owwww lmao... to funny!
Dan
Omg, I gotta get me some tuna ejuice. I mean who TF comes up with that. ....nice.
But for peeps like ME ... Who rarely go over 7.0 - 8.0 W ... Set BB at 4.75 and 3.0 ohms is just right!
And that's awesome! The point I'm trying to make, however, is that if you like a certain power, the ohms will not affect battery life. Obviously the BB has an upper and lower limit.
Lol. Well, I'm not trying to start an argument. This is just what I know. I'm an EE, and I can demonstrate math to prove this. But no one likes math, not even me!
I guess I'm not following you. (And I'm not trying to be a smarta$$! LOL!) I remember Mr. DD saying that he designed the BB with a SR (approx. 3.0 ohms) carto in mind. Many asked about using LR cartos in the BB (lower ohms) and his response was that yes they would work, but would also affect the battery life. He also stated that a SR carto with voltage set around 4.75 (or 7 W of power) would maximize the battery life. So how can the ohms not affect the battery life?? I think several have seen this already in using the lower ohm dual coil Aspire heads and the BB Bridge. The batteries drain much faster, even when they turned the BB voltage down. Hmmmmmmm ... ????
It's quite alright. And it's not something terribly easy to wrap your head around. But I'll use an example. a 3 Ohm and a 2 Ohm carto.
We'll use this tool as a simple calculator. Steam Engine | free calculators for your vaping endeavors
3 Ohm carto, let's say you like 8 Watts normally.
From the calculator, we want to set the BB at 4.9 Volts
2 Ohm carto, at 8 Watts
From the calculator, we want to set the BB at 4 Volts
You'll notice the amps (current delivered to the carto) are HIGHER with the 2 Ohm carto than the 3 Ohm carto.
BUT. What we're not taking into account is that the batteries (which are wired in series) are not putting out 4.9 or 4 volts in the respective scenarios. They ALWAYS AND FOREVER are only putting out 7.4 Volts (2 3.7 Volt batteries in series).
So you have to take the power delivered using this 7.4 Volts to find the current. As you see, the 7.4 Volts does NOT ever change. The current actually drawn from the batteries are 1.08 amps in both the 2 Ohm and 3 Ohm scenarios above.
I hate to bring math into a forum, but I hope that's easy enough to follow.
Oh perfect. On that same site is a battery drain calculator. Steam Engine | free calculators for your vaping endeavors
I urge you to use this to verify what I've stated. Tick the box for Regulated (APV), then tick the box for Voltage Regulation (VV).
Now set the atomizer resistance to 2, and voltage to 4.0. Then Efficiency to 100% (for assuming), and BATTERY voltage to 7.4. You'll see 1.08 Amps as I've stated above.
Now change the atomizer resistance to 3, and the voltage to 4.9. Be amazed at the results.
I urge you to use this to verify what I've stated. Tick the box for Regulated (APV), then tick the box for Voltage Regulation (VV).
Now set the atomizer resistance to 2, and voltage to 4.0. Then Efficiency to 100% (for assuming), and BATTERY voltage to 7.4. You'll see 1.08 Amps as I've stated above.
Now change the atomizer resistance to 3, and the voltage to 4.9. Be amazed at the results.
Ok lets try this test, different ohm resistance attys supplied with voltage to equal 20watts of power. Interestingly enough, the 1.8ohm atty batteries will only last .42 hours of continuous use whereas the 3.0 ohm atty's battery power last .54 hours of continuous use. Even though they are producing the same watts, the lower ohms use will affect the battery life.
Example...
That is if you do not take into account a constant delivery of a certain voltage that must be stepped down.
Dan
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MY FAV subject MATH!! NOT! Hahaha!! OK this is ALL very interesting!! Thank you 69 (another ##'s person) ... LOL! Just as soon as I finish wrapping my head around this tax prep appointment @ 4:00 (Ha! I changed it DP! I beat ya! ) ... I'm gonna see if my head will wrap around your info! ;-)
) ... I'm gonna see if my head will wrap around your info! ;-)
Ok lets try this test, different ohm resistance attys supplied with voltage to equal 20watts of power. Interestingly enough, the 1.8ohm atty batteries will only last .42 hours of continuous use whereas the 3.0 ohm atty's battery power last .54 hours of continuous use. Even though they are producing the same watts, the lower ohms use will affect the battery life.
Example...
That is if you do not take into account a constant delivery of a certain voltage that must be stepped down.
Dan
That's not quite right. The battery voltage is 7.4V end of story. That will never change. Obviously the voltage lowers the more you use it, but the calcs will still be the same for both of those scenarios.
With the case of a 1.8 Ohm load, like an Aspire head; This Will deplete faster than a 3 Ohm carto set at 4.9V or a 2 Ohm carto set at 4V. Why? Because 4V is the lowest the BB can go. At it's lowest, the BB will be delivering more than 8 Watts to a 1.8 Ohm Aspire head. THAT is why people are getting less battery life. Also, it makes the comparisons not like for like.
Like a latter-day Pontius Pilate, I am frantically scrubbing my hands with Purell at this time.
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