What's your voltage drop?

[Ride394]

Just curious if you have measured your voltage drop? If so,, what is it?

All my mods are hitting .03 drop. Don't think i'll get any better unless I went to silver or gold plated contacts.

 

[suspectK]

Are you measuring your mod under load? doesn't look like it..if you are measuring under load, what mod are you using?

18350 efest
button top-Magneto under 0.7ohm load- 3.3Volts
button top-Turtleship clone under 0.7ohm load- 3.65 Volts
flat top- Hammer clone under 0.7ohm load- horrible 3 Volts..

All of these mods will show the pretty much the same value without being under load.

 

[Ride394]

Nope. Just schecking the mod itself to see if there is room for improvement. Also, checked to see if noalox made any difference.

Obviously the atty and coil are gonna eat up their share but there's not much I can do about that. Just want to put as much voltage to the atty/coil as I can.

 

[Ryedan]

K100, no load = 0.00 +0.005 voltage drop.

 

[minimalsaint]

Voltage under load is what will make the difference.

 

[minimalsaint]

Nope. Just schecking the mod itself to see if there is room for improvement. Also, checked to see if noalox made any difference.

Obviously the atty and coil are gonna eat up their share but there's not much I can do about that. Just want to put as much voltage to the atty/coil as I can.

Holy cow .7 on an 18350? Right on the edge there.

 

[Ride394]

K100, no load = 0.00 +0.005 voltage drop.

Really? That sounds near impossible...

 

[KenD]

Voltage drop needs to be tested under load for it to be of any relevance, and the resistance of the coil plays a major role, as does the internal resistance of the battery. Thus, the voltage drop of a mod with a 1.8 ohm coil using a Sony vtc4 will be very different from the same mod with a 0.8 ohm coil using a red efest 18350.

Sent from my GT-I9100 using Tapatalk

 

[Ride394]

Voltage drop needs to be tested under load for it to be of any relevance, and the resistance of the coil plays a major role, as does the internal resistance of the battery. Thus, the voltage drop of a mod with a 1.8 ohm coil using a Sony vtc4 will be very different from the same mod with a 0.8 ohm coil using a red efest 18350.

Sent from my GT-I9100 using Tapatalk

How is it not of any relevance? If you have a mod with crappy contacts and a higher resistance it's not gonna put the same amount of power to the coil. If my battery reads at 4.16v and then reads at 4.13v after the mods voltage drop I would be getting 42.642w on a .4ohm coil. If I had 4.16v on my battery but a mod that only put out 4.11v 42.230w on a .4ohm coil. No, it's not a huge difference, but it is a difference.

Yes the atty itself will make a small difference. And obvioulsy if you go from a .4ohm coil to a .8 ohm coil it would be a huge difference, but that's not an apples to apples comparison to what I'm referring to.

 

[Dampmaskin]

How is it not of any relevance? If you have a mod with crappy contacts and a higher resistance it's not gonna put the same amount of power to the coil.

As long as you measure it with no load, it will put the same amount of power to the coil: Zero watts. That's why you need to measure under load.

 

[Ride394]

I'm talking about internal mod resistance only here. If you change attys and coils yes it's going to make a big difference in voltage drop.

 

[Ride394]

As long as you measure it with no load, it will put the same amount of power to the coil: Zero watts. That's why you need to measure under load.

Right, I get that. I shouldn't have used the word power.

I'm saying that your voltage drop from your battery's direct voltage to the voltage you get between the 510 threads and the positive pin is going to play into your power (wattage). The volts read at the 510 connection (not your battery) is your starting number to figure out your wattage. So if you have a voltage drop of .05 in your mod you will be vaping with less power than you would if your drop was only .02.

 

[inanitydefined]

Right, I get that. I shouldn't have used the word power.

I'm saying that your voltage drop from your battery's direct voltage to the voltage you get between the 510 threads and the positive pin is going to play into your power (wattage). The volts read at the 510 connection (not your battery) is your starting number to figure out your wattage. So if you have a voltage drop of .05 in your mod you will be vaping with less power than you would if your drop was only .02.

you're missing the forrest for the trees mate. Yes, measuring without load will give you a basic idea of continuity through the mod, but it wont tell you anything about how it'll perform in the real world. Two mods that perform the same unloaded may perform wildly different with a .5 coil on them. unloaded voltage drop is really negligible because its only a trickle of current, just enough to trip the screen. A faucet might trickle just fine, but go to hell when you open both knobs, know what I mean?

 

[Ride394]

you're missing the forrest for the trees mate. Yes, measuring without load will give you a basic idea of continuity through the mod, but it wont tell you anything about how it'll perform in the real world. Two mods that perform the same unloaded may perform wildly different with a .5 coil on them. unloaded voltage drop is really negligible because its only a trickle of current, just enough to trip the screen. A faucet might trickle just fine, but go to hell when you open both knobs, know what I mean?

I get what you're saying. But in your analogy the faucet would be the atty and coil. I'm trying to make sure the pipes leading to the faucet are as clear as possible...

 

[Ride394]

Also, to be clear I am not measuring ohms through the mod I'm measuring output voltage at the 510 connection while firing the mod.

 

[inanitydefined]

I get what you're saying. But in your analogy the faucet would be the atty and coil. I'm trying to make sure the pipes leading to the faucet are as clear as possible...

no, you don't apparently. I'm saying you'll never see how clear those pipes really are if you don't put a load on it. unloaded vdrop means nothing.

what you are trying to do is guess what a paint finish will look like by looking at a can of wet paint.

 

[Ryedan]

Also, to be clear I am not measuring ohms through the mod I'm measuring output voltage at the 510 connection while firing the mod.

Look at it this way. My mod with clean contacts has so little resistance I can't measure the voltage drop with my voltmeter with 0.01 resolution. I figure that is par for the course. That's why people measure V drop loaded. That's where it shows, but as you know it's not that easy either because the battery and the coil are involved and they are hard to quantify. Plus the higher the load the more V drop you'll get.

So, mod V drop under load is only comparable to that load with that battery (battery model and age influence its internal resistance). Someone else checking that mods V drop under load with a different battery and/or a different load will get a different number.

No one ever said this was going to be easy

 

[Ride394]

Look at it this way. My mod with clean contacts has so little resistance I can't measure the voltage drop with my voltmeter with 0.01 resolution. I figure that is par for the course. That's why people measure V drop loaded. That's where it shows, but as you know it's not that easy either because the battery and the coil are involved and they are hard to quantify. Plus the higher the load the more V drop you'll get.

So, mod V drop under load is only comparable to that load with that battery (battery model and age influence its internal resistance). Someone else checking that mods V drop under load with a different battery and/or a different load will get a different number.

No one ever said this was going to be easy

Hahaha it's definitely not easy. So with clean brass contacts and cleaned threads what else could I do to get my mod to be less than .03?

 

[Ride394]

Nevermind. Just learned a valuable lesson... The cheap ohm checker/voltmeter doesn't give the most accurate measurement...

Just remeasured using the multimeter and mine also don't show any drop in the mod itself.

Apologies to you, inanity.

 

[Ryedan]

Here's another discussion about voltage drop in mods with much better explanations than I gave: How do I measure internal resistance?