How many watts can a person take?

[ambientech]

The mod is irrelevant. I'm merely asking if you are actually getting what you think you are getting. Like I said, if you're not measuring voltage, you'll probably be surprised.

You only gave 1 data point, so you might actually be getting the 40w that you say you did. The others quoted in my post gave 2 data points and I'd bet a paycheck they are well short of what they think they are getting.

4.1-4.2V with a .34-.4 ohm load... Not a chance.

 

[Rader2146]

Of course because of the battery.


Sent from my SAMSUNG-SGH-I317 using Tapatalk

...And the mod, and the atomizer. Some mods, even "high-end" mods, have more resistance than today's "ultra-high drain" batteries. Every piece of metal and every contact point between the Bat[+] and Bat[-] add to the total resistance of the circuit.

 

[CloudZ]

How many of you are actually measuring the voltage at the coil to see if you are getting what you think you are? I'd bet you'll be surprised.

Perhaps they know about voltage drop and are just stating their theoretical numbers? Not everyone has or would consider buying an inline 510 voltmeter, most just have a multimeter with pointed leads (hopefully). Its not exactly the safest thing in the world to hold the leads on the posts with one hand, press the button with the other hand, and look away from this precarious arrangement for a few seconds to see what the digital readout says. So yeah, they might be getting half of what they think they are but its not very easy to measure for most. Incorrect as it may be, I don't see why using theoretical wattage numbers for the sake of discussion is so wrong. Its actually more safe to think your battery is getting pushed a lot harder than it actually is.

That said, I have a dual coil RDA that hits about 26 watts on a freshly charged battery, voltage drop considered. It is pretty warm and intense, I don't think too much higher would be very enjoyable for all-day vaping. Either in terms of the heat or additional airflow (airier draw) I would need.

 

[State O' Flux]

Ohms law math... fun yes, but in these deep-drain scenarios, seldom a reality. ;-)


Hell... I'm just happy to see - in a subset where stunningly, so many don't have a clue - lots of folks actually doin' the math.

 

[fanatic205]

I choked at 40

40 watts is my sweet spot .4 ohm dual coil dripper, I swap batteries when they get to 3.9volts

I sometimes vape at 45 watts with a fresh batt and a .4ohm coil

The build I just did is pushing 50w...

.34 dual micro flatty.

How many of you are actually measuring the voltage at the coil to see if you are getting what you think you are? I'd bet you'll be surprised.

I am using a supertmanufacturing ELA I have almost no VDROP, brass contacts that are gold the rhodium plated. I am also using 30amp efest batteries.

 

[Rader2146]

Perhaps they know about voltage drop and are just stating their theoretical numbers? Not everyone has or would consider buying an inline 510 voltmeter, most just have a multimeter with pointed leads (hopefully). Its not exactly the safest thing in the world to hold the leads on the posts with one hand, press the button with the other hand, and look away from this precarious arrangement for a few seconds to see what the digital readout says. So yeah, they might be getting half of what they think they are but its not very easy to measure for most. Incorrect as it may be, I don't see why using theoretical wattage numbers for the sake of discussion is so wrong. Its actually more safe to think your battery is getting pushed a lot harder than it actually is.

Perhaps they do, and perhaps they are stating theoretical numbers...but that was the purpose of my question. I didnt say it was wrong to use theoretical numbers for discussion, sometimes that is the best that we can do. I'm only stating that it isn't accurate. My question was not meant to be argumentative, but I know I can often come across as such.

If one is put off by the precariousness of needlepoint test leads, there is always alligator clips or spring hooks.

 

[Jonathan Tittle]

So if the vtc4's have a higher mah rating. I wonder what the actual amperage is ?

They are rated at 10C and are 2100 mah, but most state that they are actually 2000 mah, so that averages out to 20 amps. At the same time, they're advertised as being able to push out a continuous 30 amps. I don't have the tools to check, but I'm sure there's a test on a vendor site that explains it better, I just can't remember who it was that did the testing.

 

[Jonathan Tittle]

Found it:

The great 30A shootout Sony US18650VTC3 vs Efest 30ASun-Vapers.com

This shows some differences between the Sony VTC3 (the 1600 mah) and the EFEST 30 amp. He states he's new to testing, but it gives a basic idea of how the battery performs under his controlled test. It's not the end-all be-all of testing, and someone could probably do one a little better (i.e. someone who works with batteries more), but this is a start. The VTC4 is still rather new, but it's a hot item right now due to the claim of 30amp CD.

 

[ta2dave76]

I was just stating what the ohm's calc gave me @ 4.2v. At 3.7v, it drops to 40ish watts.

 

[State O' Flux]

My question was not meant to be argumentative, but I know I can often come across as such.

Noooooo - You?

Say it ain't so Martha!

 

[CloudZ]

Perhaps they do, and perhaps they are stating theoretical numbers...but that was the purpose of my question. I didnt say it was wrong to use theoretical numbers for discussion, sometimes that is the best that we can do. I'm only stating that it isn't accurate. My question was not meant to be argumentative, but I know I can often come across as such.

If one is put off by the precariousness of needlepoint test leads, there is always alligator clips or spring hooks.

No problem, I understand. It is best if people know as much as they can about how their equipment is actually operating. I just wanted to chime in with my thoughts on the matter.

Attachments for the needlepoint leads are definitely better, but again that is additional equipment that most people do not have and may not consider getting if they aren't going to use it much. For a lot of folks, it seems difficult enough to convince them that they really need a multimeter for checking their coil resistance and battery charge. I know alligator clips are cheap and you can get them anywhere, but the same can be said for a lot of tools that make various jobs safer.