100 mAh = 1 hour vape time?
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See also:
http://www.e-cigarette-forum.com/fo...-discussion/447350-1hr-100mah-rule-thumb.html
The rule of thumb seems fairly useful for 3.7V batteries, atomizers between 2-3 ohms resistance and moderate frequency of vaping. Outside of those parameters, it needs to be adjusted.
http://www.e-cigarette-forum.com/fo...-discussion/447350-1hr-100mah-rule-thumb.html
The rule of thumb seems fairly useful for 3.7V batteries, atomizers between 2-3 ohms resistance and moderate frequency of vaping. Outside of those parameters, it needs to be adjusted.
how about some actual math?
Lets say an average vaper with a flat regulated ego stick and a 2.2 ohm whatever clearo -> 3.5^2/2.2 = 6.2W
0.1Ah * 3.5v = 0.35Wh
0.35Wh/6.2W*3600sh = 203 seconds of holding down the button*, however fast you use that up is anyones guess. How much juice that is also varies with coil and wick design and power applied to it and vg/pg ratio. Theoretically 0.35Wh could vaporize 25ml of room temperature vg under perfect conditions, in reality though the current coil/wick designs are very inefficient so i'd say closer to 0.3ml-0.5ml.
*assuming the 100mAh is in the usable capacity range of the battery, an actual 100mAh battery would last a lot less. For reference the usable capacity range for a 1000mAh battery is around** 800mAh and for 2000mAh around 1700mAh
**varies somewhat with cell type
Lets say an average vaper with a flat regulated ego stick and a 2.2 ohm whatever clearo -> 3.5^2/2.2 = 6.2W
0.1Ah * 3.5v = 0.35Wh
0.35Wh/6.2W*3600sh = 203 seconds of holding down the button*, however fast you use that up is anyones guess. How much juice that is also varies with coil and wick design and power applied to it and vg/pg ratio. Theoretically 0.35Wh could vaporize 25ml of room temperature vg under perfect conditions, in reality though the current coil/wick designs are very inefficient so i'd say closer to 0.3ml-0.5ml.
*assuming the 100mAh is in the usable capacity range of the battery, an actual 100mAh battery would last a lot less. For reference the usable capacity range for a 1000mAh battery is around** 800mAh and for 2000mAh around 1700mAh
**varies somewhat with cell type
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Just keep it simple:we all know a batt listed 1000 mah is spose too last 10 hours ,it wont unless you are a very light vaper,if you chain vape you will get 5 -6 hours,about half,a moderate vaper will get about 7 hours,3/4 life.
A different method of arriving at the same result: you can also calculate the total "button down" (atomizer energized) time simply by dividing the battery mAh by the load current in mA.
Using your example of 3.5V across a 2.2-ohm atomizer: I = E/R = 3.5/2.2 = 1.59A, or 1590mA
100mAh/1590mA = 0.0628 hours. As you say, usable capacity is usually somewhat less than rated capacity.
Using your example of 3.5V across a 2.2-ohm atomizer: I = E/R = 3.5/2.2 = 1.59A, or 1590mA
100mAh/1590mA = 0.0628 hours. As you say, usable capacity is usually somewhat less than rated capacity.
I have not read this entire thread, but I can put it into a mathematical form that would tell you with greater precision how much time you would have. I will not consider Peukert exponent or capacity considering the size of the battery and the normal loading nature in this analysis. This is a simple analysis.
Say we have a 1100mAh (1.1Ah) 3.6V nominal battery (4.2V to 2.6V) on a 2.5 ohm nominal coil(Resistance varies as a function of the coil temperature, but we're going to say it's 2.5ohm regardless of temperature for the sake of simplicity). From our battery we can get a more useful and commonly understood rating of Wh by multiplying the voltage times the current capacity.
3.6V*1.1Ah=3.96Wh to a safe full depth of discharge
Edit: Which is actually to 2.6V, so we're going to multiply the capacity ratio I pulled from one of my favorite batteries, the Panasonic NRC18650B http://e-motion.lt/wp-content/uploads/2013/07/NCR18650B1S.pdf
According to the curve chart on page 2, following the 2C curve, the capacity is 1850mAh out of 3300mAh at 3.2V
1850Ah/3300Ah=0.561ul
3.96Wh*0.561ul=2.22Wh
1 Wh mean you can supply 1 Watt for one hour. Now, understand that this one hour is actual firing time. We now have to determine how many watts our coil will take. With the assumption that this is a constant voltage supply at 3.6V, this makes things much simpler in calculating our load. V^2/R=P
3.6V^2/2.5ohm = 5.184W
Now that we know our load, we can compare it to our Wh capacity. By quick observation we know the answer will be less than an hour.
2.22Wh / 5.184W = 0.4282 hours or 1542 seconds
Now remember, that is actual firing time. Say you are firing 4 seconds per vape, every minute.
1542 seconds / (4 seconds/minute) = 385.5 minutes or 6 hours 25 minutes 30 seconds
Now, this answer means that if you took one puff for 4 seconds every minute your battery will last ~6.5 hours assuming you were able to squeeze every bit of juice out of your battery until your device cut you off.
Say we have a 1100mAh (1.1Ah) 3.6V nominal battery (4.2V to 2.6V) on a 2.5 ohm nominal coil(Resistance varies as a function of the coil temperature, but we're going to say it's 2.5ohm regardless of temperature for the sake of simplicity). From our battery we can get a more useful and commonly understood rating of Wh by multiplying the voltage times the current capacity.
3.6V*1.1Ah=3.96Wh to a safe full depth of discharge
Edit: Which is actually to 2.6V, so we're going to multiply the capacity ratio I pulled from one of my favorite batteries, the Panasonic NRC18650B http://e-motion.lt/wp-content/uploads/2013/07/NCR18650B1S.pdf
According to the curve chart on page 2, following the 2C curve, the capacity is 1850mAh out of 3300mAh at 3.2V
1850Ah/3300Ah=0.561ul
3.96Wh*0.561ul=2.22Wh
1 Wh mean you can supply 1 Watt for one hour. Now, understand that this one hour is actual firing time. We now have to determine how many watts our coil will take. With the assumption that this is a constant voltage supply at 3.6V, this makes things much simpler in calculating our load. V^2/R=P
3.6V^2/2.5ohm = 5.184W
Now that we know our load, we can compare it to our Wh capacity. By quick observation we know the answer will be less than an hour.
2.22Wh / 5.184W = 0.4282 hours or 1542 seconds
Now remember, that is actual firing time. Say you are firing 4 seconds per vape, every minute.
1542 seconds / (4 seconds/minute) = 385.5 minutes or 6 hours 25 minutes 30 seconds
Now, this answer means that if you took one puff for 4 seconds every minute your battery will last ~6.5 hours assuming you were able to squeeze every bit of juice out of your battery until your device cut you off.
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Wow, if you substituted the word "Welfare" for "Ecig/E-Juice" in this post...eh, nevermind.
Well, BTU/h is another unit for Watts. 1 watt is approximately 3.4 BTU/h.
So what's the BTU rating of a #2 pencil? If it isn't at least 20 or so, it won't even be good for one draw, no matter the resistance of the paper... 
My thoughts exactly.... Sad really how "men", and even women, in America have become so lazy and complacent that most of us won't put forth the effort to try anything. Esp if it means we have to use our brain for something. Cause everyone knows that brains are for losers...
I'll avoid that rant though as it'll go on for-absolutely-ever.
The 100mah=1hr is...subjective at best. Ironically, I have a 650mah and a 1100mah (both egos on low res. 1.8 attys) and they last about the same amount of time. I think this is because my 650 doesn't produce a very heavy hit, but it's fairly consistent. On the other hand, my 1100 is very inconsistent and pumps out really high power for about 40% of the hits which makes it drain more battery life. Both of them however will last me almost a day and a half of fairly heavy vaping because on my 650 I take much smaller toots as taking a long pull doesn't amp up the vape very much on that one.
I've been a Mac geek since the 521K in, like, '87 or there abouts. Keyboard shortcuts started out as nice, simple, helpful things like command-v or command-z. They have gone completely whacky over the years. Then came unicode and aaAAIIIIIEEEEEEEEEEEEEE!!!!
(I get the need for it. It's just the sheer volume of code sets out there and the UTF-8 and the UTF-16 and the UTF-4,890,623... anybody got any Advil?)
"Ohm" should be option-z.
But I hear you on the symbols for the keys. Why is an caret = "control key"? And what is that thing for "option key" anyway? A staircase maybe???
You may actually have a forward delete. Try the "del" key. Not "delete" but the little one that is often grouped with "ins", "home", "end", "page up", etc. I think there's another one out there that looks like some crazy "cheat code" in a video game but I don't remember it.
What drives me absolutely bonkers (being basically a Unix guy) is they moved to *Nix base but "home" and "end" still don't work the way they should. Unless they do. 'Cause some programs remap the keyboard so sometimes they work the Mac way, sometimes the Unix way.
Somebody make it stop!!!!
<whimper>
That's so easy to do. Open terminal on the MAC and type from root: rm -rf
Once the command has finished, install your preferred Linux version (I prefer Slackware derivatives myself.)
Well, the thought of programming in the Windows world makes me want to stick my head in an oven. Linux is an absolute blast but all back end stuff (which I enjoy but that's not where the cash is, there's a limited number of back end jobs). And when it comes to inconsistency in keyboard short cuts in the Windows world it ain't better, it's worse. Plus, Unicode is what it is and it don't matter which platform you're on. It's big and confusing.
I'm not gonna get drawn into any kinda "platform war" or anything (my first programming job was in 1981... I've heard it all and am so bored with it all
) but Apple's approach actually still is the better one for the consumer. Flawed but better done. Don't mean I won't razz them to no end for their foibles. They are a for profit corporation after all. They are capable of Very Dumb Things much as any. And I've been around so long (in computer years, I'm a withered old fossil
), I remember the absolutely beautifully done Toolbox. It was just genius. I know why they switched to NeXT. I don't know they had any other viable choice. But they're having to work back toward what the Toolbox was. Anyway, my "equation" is pretty simple. My previous income stream was primarily out of Spain. Spain went flat into a depression. That blew up.
iOS apps make money. I need money.
Therefore...
That's so easy to do. Open terminal on the MAC and type from root: rm -rf
Once the command has finished, install your preferred Linux version (I prefer Slackware derivatives myself.)
Me, it was Gentoo. It just don't get better in performance than being able to compile from the ground up...
Long aside:
Platform wars just annoy me to no end. I'll be a "fanboi" of a for profit corporation only if they give me big wads of stock options. Otherwise, they're on their own. I will never get the "fanboi" phenomena. What do they get out of it anyway? Do they think Apple or Microsoft or Samsung will send them checks?
Computers is tools. So is software. You use what works in whatever the context is. I am also not deeply in love with my drill bits. I just use them to do stuff.
I have always agreed with Apple's general approach in the context of ordinary folk having computers to get done whatever is important to them. The computer as consumer product. Where you don't have to care what's under the hood. You just drive it to your destination.
I have never liked the fact that Gates was a marketing geek far more than a tech geek. I have entire rants about how MS is a marketing machine, not a tech company. But I'm just not vested in what other people use. If Windows is the best for them, great. Fine. Who cares? Whatever floats your boat and other cliches.
I thought the Mac's descendents would be the front end to *Nix systems and that's where we'd end up more or less at this stage of the game. We seem headed that way now but it took way longer than I expected. Pretty much everybody but MS is running a *Nix. OS X runs on BSD. So does iOS. Android runs on Linux. Etc. And while Apple did not pioneer the entire GUI (as some seem to want to believe... it was Xerox PARC and others actually), they did bring it to market and I hate to tell Android fans but Android really is a "follower".
(Which isn't actually a bad thing. The entire industry is built on what came before. There's no shame in that. Why everything has to be An! Innovation! We! And! We! Only! Did! is beyond me. For crying out loud, the mouse is older than I am. Thing was invented in the 40s or 50s!)
The current Mac set up is my personal ideal (your mileage may vary) for some very simple reasons. The "user friendly" GUI aspect lets me do non-computer stuff (like make f*rt jokes online) without worrying about what's going on under the hood. But it's *Nix based and, yeah, I can do CLI in my sleep. When the GUI is being annoying, I can pop open a terminal window and go around it.
So, for myself, it's a damn good compromise. I get the GUI for playing around on FB or ECF. I have access to the *Nix if I need.
Not to mention, much as I sometimes want to beat my head against the wall over Objective C (why, oh why couldn't they go maybe Ruby?), the iOS system is quite endlessly fascinating.
Since the direction I was going with the work with that university in Spain fell apart (it was such great stuff... sigh), if I'm stuck doing iPad games (yeah, working on one, hope to release first quarter 2014)... well... there are worse ways to make a living...
Platform wars just annoy me to no end. I'll be a "fanboi" of a for profit corporation only if they give me big wads of stock options. Otherwise, they're on their own. I will never get the "fanboi" phenomena. What do they get out of it anyway? Do they think Apple or Microsoft or Samsung will send them checks?
Computers is tools. So is software. You use what works in whatever the context is. I am also not deeply in love with my drill bits. I just use them to do stuff.
I have always agreed with Apple's general approach in the context of ordinary folk having computers to get done whatever is important to them. The computer as consumer product. Where you don't have to care what's under the hood. You just drive it to your destination.
I have never liked the fact that Gates was a marketing geek far more than a tech geek. I have entire rants about how MS is a marketing machine, not a tech company. But I'm just not vested in what other people use. If Windows is the best for them, great. Fine. Who cares? Whatever floats your boat and other cliches.
I thought the Mac's descendents would be the front end to *Nix systems and that's where we'd end up more or less at this stage of the game. We seem headed that way now but it took way longer than I expected. Pretty much everybody but MS is running a *Nix. OS X runs on BSD. So does iOS. Android runs on Linux. Etc. And while Apple did not pioneer the entire GUI (as some seem to want to believe... it was Xerox PARC and others actually), they did bring it to market and I hate to tell Android fans but Android really is a "follower".
(Which isn't actually a bad thing. The entire industry is built on what came before. There's no shame in that. Why everything has to be An! Innovation! We! And! We! Only! Did! is beyond me. For crying out loud, the mouse is older than I am. Thing was invented in the 40s or 50s!)
The current Mac set up is my personal ideal (your mileage may vary) for some very simple reasons. The "user friendly" GUI aspect lets me do non-computer stuff (like make f*rt jokes online) without worrying about what's going on under the hood. But it's *Nix based and, yeah, I can do CLI in my sleep. When the GUI is being annoying, I can pop open a terminal window and go around it.
So, for myself, it's a damn good compromise. I get the GUI for playing around on FB or ECF. I have access to the *Nix if I need.
Not to mention, much as I sometimes want to beat my head against the wall over Objective C (why, oh why couldn't they go maybe Ruby?), the iOS system is quite endlessly fascinating.
Since the direction I was going with the work with that university in Spain fell apart (it was such great stuff... sigh), if I'm stuck doing iPad games (yeah, working on one, hope to release first quarter 2014)... well... there are worse ways to make a living...
Ok, we can do that:
I have a coworker that I gave a simple welfare on loan so he could try it out without having to buy a crappy welfare from a gas station. Nothing fancy- welfare. IMHO a decent "test" welfare if you will.
I explained the welfare- how to operate, charge, clean and fill, and also have him links to ECF and various suppliers so he could purchase welfare he wanted when the time came. That was 2 months ago.
First, he didn't like the welfare. "Okay" I said and gave him another 15ml welfare.
Then, he thought it wasn't strong enough. "Okay" I said and gave him 10ml welfare of something stronger.
Then, he thought the welfare was wrong for him. "Okay" I said and mixed him 3 different 10ml welfares. My rationale this whole time being that he has needed to try a few different welfares and I can understand that this can be one of the most frustrating parts of starting.
THEN, he tells me that it all tastes like crap and he thinks something is wrong. "Let me see" I said. I proceeded to dismantle the head to find the coil was almost a solid chunk of burnt welfare. (I explained cleaning this too, btw).... "Okay" I said and put in a replacement welfare. While I was at it, I cleaned out the welfare that was pooled up in the battery threads and explained again that this needs to be done regularly if the welfare was to survive.
THEN, he tells me that he is out of welfare but didn't really like what I gave him anyways, so "what else can you make me" and "oh, by the way I think I need another one of those welfare head thingies".....
Turns out he never visited ECF, never even looked online for his own welfare, and didn't really think he needed to, since he figured I was so "pro welfare" that I would do whatever it took to keep HIM on welfare.
I told him to keep the welfare and I bought him a pack of cigs the next day on my way to work.
In summation- welfare...... It's not for everyone.
(I feel dirty for having done that... Apologies to the OP.)
You're really pressing something... lol Blow your mind - crayons.
That's the case of the 3.3 v devices vaped with a 2.5 ohm resistance. The lower the resistance, the higher the voltage, the less it lasts. My 800 mAh on the eVic lasts exactly 100 puffs, independently of what you have hooked up. Sometimes it lasts me 3 hours, sometimes more.
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