No that is right on the money and the coil is drawing 9.81 amps too. That is perfectly fine.
WISMEC Reuleaux RX200 TC
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No that is right on the money and the coil is drawing 9.81 amps too. That is perfectly fine.
Thank you for the reassurance, was second guessing myself as I'm still new to this. I had told her I'm quite sure that it is perfectly correct, but she seems to think that my mod is unauthentic or is looking for a problem with it.
I showed her the calculation of the voltage to show she may be wrong, but then she tried telling me that the calculation is for "one battery" not all three, so I tried explaining to her that they are in series and that they combine their voltages and give an output depending on the wattage and ohms.
I however have noticed something peculiar. I have three VTC4's and they're rated at 3.7v, but after a full charge they read up to a max of 4.12? Is this normal?
She is incorrect so no worries. The typical fully charged 18650 should be about 4.2 volts, all mine are only a few months old & usually show 4.18 or so when done on my Xstar 4 bay charger.
Perhaps I didn't do a completely full charge then. I was pretty excited to try it out yesterday.
Wait... still trying to figure this out. So in series - the amp draw per battery doesn't change but volts double. So if i'm drawing the same volts from a single battery mod and from a dual battery mod (wired in series), does that mean my amp draw per battery is halved? If this is the case, then does having a dual/triple battery mod reduce the risk of going over the 20A line in the sand?
And are all multi battery mod's (commercially available, i.e. joyetech, kanger, smok, etc...) wired in series or are some wired in parallel?
Thanks!
Dial in your sweet spot.. Simple as that!
For instance I don't pay much attention to numbers but judge by how my atty vapes.. I start around 60w on a dual coil .25 ohm build, take a couple test hits, bump up, try again, bump up etc..once it starts getting a little too warm I bump it back down a little and that is my sweet spot I prefer...it so happens my sweet spot on my .25 ohm build in the Griffin currently is 72w..vapes great!
I judge by how it vapes, nothing else matters, least it's been that way for me, lol
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@chinacatsunflower-: Yes well I am an electronic engineer and that 1, 2, and 3 battery stuff can get confusing. The easiest way to look at this is that whatever the watts the battery (or batteries) are putting out, is the same watts the coil(s) is getting. (1) So the voltage of the Battery (batteries) and current can be totally different than what the coil is getting. But the watts won't change (1).
Charged full at 4.12v? With what are you reading this voltage? If you are using the RX200 voltmeter, that thing is horribly inaccurate. If you are using something that is far more accurate, well that is on the low side but it won't hurt anything and the batteries will last longer as far as recharges goes. Say what are you using to charge your batteries anyway?
(1) If you want to get picky, you must also multiple the efficiency of the mod with the watts out which I am guessing is probably about 92% (so multiple 0.92 with the wattage to get watts out). But the better batteries are underrated, so if you account for this don't even bother adjusting the difference. It is close enough.
Charged full at 4.12v? With what are you reading this voltage? If you are using the RX200 voltmeter, that thing is horribly inaccurate. If you are using something that is far more accurate, well that is on the low side but it won't hurt anything and the batteries will last longer as far as recharges goes. Say what are you using to charge your batteries anyway?
(1) If you want to get picky, you must also multiple the efficiency of the mod with the watts out which I am guessing is probably about 92% (so multiple 0.92 with the wattage to get watts out). But the better batteries are underrated, so if you account for this don't even bother adjusting the difference. It is close enough.
I was indeed using the RX200 voltmeter, it had been saying that the charge was fully done while off, but not while it was on, so I said screw it because I wanted to break that bad boy in. I however do have an electrician as a father, and I've asked him if he could bring a voltmeter today for a more accurate reading. Will any voltmeter do, or does it have to be a specific type of voltmeter to read batteries safely?
I am currently using the onboard charging on the RX200 with a 2 amp Samsung wall charger until I can buy an Efect Luc V4.
Also, my mod is reading 0.52 ohms on a 0.5 ohm coil. Could you help explain to me why my RX200 is reading higher ohms than what the coil is rated at and how I can change it back to 0.5 or if I should and that if I should lock it at 0.5 after changing it (and for all coils upon using a new one)?
I thank you very much for sharing your battery knowledge with me, I greatly appreciate it
In say a RX200 with three 18650 3.7v batteries are wired up in series. So the total voltage is 11.1v (they add in series and stay the same in parallel). But since most coil builds are expecting about 3.7v to the coil, whatever the coil draw in amps is going to be one third the amps from the battery. That part is easy.
Now if you have 11.1v going to the coil(s), whatever amps the coil is using is the same amps the battery is supplying. But most setups are not going to be using 11.1v to the coil(s). They are going to be using far less. If less, the battery current is going to be less than the output current. Although watts is the same.
Watts = Voltage times Amps
Just relax and vape on China. Sit back and relax. Everything's fine. You will find that as your coil ages, the resistance will drift higher. Nothing to do, nothing to change. Even if you get a brand new coil that's not exactly at spec, no worries. Close is good enough.
So if I have a 0.2 ohm coil and set the wattage to 80 - that's a 20 amp draw & 4 volts.
Q#1) 2 batteries in series would supply 2 volts @ 20 amps each to get me to the desired output. Having 2 batteries instead of 1 only gives me more mAh in this case as well. In other words, if I don't want to go over 20 amps per battery and want more watts than 80 on a 0.2 ohm coil, I would need the batteries in parallel. Correct?
Q#2) Are all multi battery mods wired in series or are some in parallel to lower the amp output per battery?
.52Ω actual on a .5Ω coil is more accurate than most prebuilt coils are.
In 3 years of vaping it's been rare that my coils tested dead on.
vape it
In 3 years of vaping it's been rare that my coils tested dead on.
vape it
@chinacatsunflower-: Yeah I wouldn't put a lot of stock in that RX200 battery voltage measurement. They all read the same batteries differently. Any multimeter should be able to read them far better (even those cheap 5 to 10 dollar ones). Yes that is ok if you had taken them off of the charger too soon. That won't hurt them a bit.
Ah now about charging in the RX200. Yeah well that isn't such a good idea. Here is why. The RX200 treats the three batteries as one 11.1v battery. Yes you can do it that way to a point. What always happens is even with the best married batteries, they are still not 100% alike. And what happens is one or more will have a different voltage from one another. And continued charging this way the problem only gets worse.
The problem is that the RX200 doesn't do balance charging. Balance charging insures all batteries are charged to the same voltage level (series charging does not do this like the RX200). If you monitor the battery voltage with a voltmeter and the batteries are staying at the same voltage from each other. Then charging on the RX200 isn't hurting them (series charging).
But continued charging this way well eventually cause the voltages to be different. Now something has to be done. Since the battery(s) that are higher will be overcharged and the batteries lower will be undercharged. The best way to fix this is with an external battery charger which charges the batteries individually.
And like big_vape said, the stated resistance vs. the actual resistance can be different. It is really difficult to build a coil right on the money. But making a coil that is very close is very easy. So nothing to worry about there. And it wouldn't matter to your RX200 and it will vape the same anyway.
Ah now about charging in the RX200. Yeah well that isn't such a good idea. Here is why. The RX200 treats the three batteries as one 11.1v battery. Yes you can do it that way to a point. What always happens is even with the best married batteries, they are still not 100% alike. And what happens is one or more will have a different voltage from one another. And continued charging this way the problem only gets worse.
The problem is that the RX200 doesn't do balance charging. Balance charging insures all batteries are charged to the same voltage level (series charging does not do this like the RX200). If you monitor the battery voltage with a voltmeter and the batteries are staying at the same voltage from each other. Then charging on the RX200 isn't hurting them (series charging).
But continued charging this way well eventually cause the voltages to be different. Now something has to be done. Since the battery(s) that are higher will be overcharged and the batteries lower will be undercharged. The best way to fix this is with an external battery charger which charges the batteries individually.
And like big_vape said, the stated resistance vs. the actual resistance can be different. It is really difficult to build a coil right on the money. But making a coil that is very close is very easy. So nothing to worry about there. And it wouldn't matter to your RX200 and it will vape the same anyway.
The voltages are already different, sadly. Right now the RX200 voltmeter is reading them at 3.68, 3.54, 3.68 (Have to wait an hour or so for that voltmeter). So continued charging with the onboard RX200 charger will eventually make the batteries permanently unmarried or can they always be remarried by using an external charger?
Also, when I do get an external charger. With what amps should I charge the batteries on as with the Efect Luc you can change the amps.
Wattage is a result of voltage applied to a certain resistance. Voltage and watts are dependent on it other and adjusting one will change the other. A .52 load at 5.1v gives 50w. If the resistance is read too high, as .52 for a coil that is actually .5, you'll get a higher wattage than indicated. 5.1v applied to a .5 ohm coil gives 52w. Mathematically at least.
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@chinacatsunflower-: No don't go by that RX200 battery readings. Just check with a multimeter and if they are only 0.01 volts from one another or something that isn't horrible or anything. Even only a 0.10 difference isn't all that horrible. The RX200 is suppose to throw an Imbalance Error when they are 0.30 volts different. But by then it doesn't look too good.
Yes you can save the batteries if they are far different than one another with an external charger. Although it really depends how bad they got. Even as unreliable as the RX200 battery voltage measurement is, that doesn't look too bad yet.
Yes you can save the batteries if they are far different than one another with an external charger. Although it really depends how bad they got. Even as unreliable as the RX200 battery voltage measurement is, that doesn't look too bad yet.
Alright, thank you. I read that as long as they're within a 4% difference in voltage from the lowest battery, that they'll be fine. I plan on getting that external charger asap, but for now I will be fine I've gathered?
0.2 ohm at 80 watts is 4v @ 20 amp, ok.
#1: No two 2v batteries in series will give you 4v and both batteries are drawing 20 amps. Any batteries in series and whatever the current is in one, is the same through all of them. But then you start talking about batteries in parallel. If you are connecting batteries straight to a coil without regulation is one thing and the battery(s) and current is the same to the coil. With regulation, it is a totally different story. With regulation, batteries in series or parallel doesn't really matter since they can both produce the same output.
#2: Some mods are wired in parallel and some mostly are wired in series. And as far as regulation, it doesn't matter how you do it. Although in parallel, you are going to need thicker gauge wire to handle more current. And in parallel you don't have to worry about balance charging since it is just like a bigger capacity battery.
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