New VTC from CGR= Hotter vape??

[Dougiestyle]

So, I upgraded my TRA LP w/ OG contact to a TRA w/SO spring a Dibby pos(+) contact last week. I have a parallel singe coil @ .5ohm on my A6. Yesterday, I received my VTC3s from China (2.5 months via kayak FTL). I've had Panny CGR18650 for the longest time and made coils within battery spec. Obviously, performance improved with upgrading my Grand, and I know the VTCs are rated triple the amp limit of the CGRs, but with ONLY swapping a fresh VTC in for the CGR, my vape seems nuclear!

Is this normal, and should I plan to up(+) my resistance due to having too much battery output?

I didn't think that a higher amp limit meant increased current. Am I wrong?

As a long-time vaper, I have a pretty good grasp on DC electronics, but I'm amazed and slightly confused by the signifcant increase in performance with the battery upgrade- only.

I don't understand.

Also of note: the CGRs are over 2 years old. Maybe I've just become accustomed to decreased performance of the aged CGRs? They still seem to last all day.

I'm confused. Help. Explain, brothers and sisters.

 

[Papa_Lazarou]

Hmmm... sounds like your old bats have performance degradation. Have you metered them fresh off the charger? Are they pitted from arc'ing?

At .5 on an A6, you should feel some heat.

 

[Treebeard]

So, I upgraded my TRA LP w/ OG contact to a TRA w/SO spring a Dibby pos(+) contact last week. I have a parallel singe coil @ .5ohm on my A6. Yesterday, I received my VTC3s from China (2.5 months via kayak FTL). I've had Panny CGR18650 for the longest time and made coils within battery spec. Obviously, performance improved with upgrading my Grand, and I know the VTCs are rated triple the amp limit of the CGRs, but with ONLY swapping a fresh VTC in for the CGR, my vape seems nuclear!

Is this normal, and should I plan to up(+) my resistance due to having too much battery output?

I didn't think that a higher amp limit meant increased current. Am I wrong?

As a long-time vaper, I have a pretty good grasp on DC electronics, but I'm amazed and slightly confused by the signifcant increase in performance with the battery upgrade- only.

I don't understand.

Also of note: the CGRs are over 2 years old. Maybe I've just become accustomed to decreased performance of the aged CGRs? They still seem to last all day.

I'm confused. Help. Explain, brothers and sisters.

I have both but don't notice any difference in power delivery between the two. My CGRs are about 1.5 yrs old and seem as strong as ever. All of my single coils are .8Ω

 

[AzPlumber]

No doubt you would have less voltage sag on a new battery vs an older battery. Each cycle degrades a battery just a bit and increases the internal resistance. Over time this resistance becomes noticeable as increased voltage sag. In addition I believe the internal resistance of a new VTC3 is a bit lower than a new CGR.

 

[muzichead]

You are feeling the effects of both, the batteries being past their prime and also the voltage sag as well. I know when I switched to my new LG HE2's there was an immediate difference in vap. Mine are nearing 2yrs old now. I still use them in one device, but have built that coil to offset the sag. It works for me for now until I order some more LG's....

 

[Filthy-Beast]

No doubt you would have less voltage sag on a new battery vs an older battery. Each cycle degrades a battery just a bit and increases the internal resistance. Over time this resistance becomes noticeable as increased voltage sag. In addition I believe the internal resistance of a new VTC3 is a bit lower than a new CGR.

This.

Every battery has an internal resistance that create a voltage drop under load. So when testing off the charge you won't see it. As a battery ages the internal resistance increases thus increasing the voltage drop.

Also each battery from same manufacture is slightly different and as the ohms of your coil drop the impact of this voltage drop in the battery increases.

to measure it Pull the door off the Reo, Put your voltage meter leads on the positive and negative side of the battery while you fire a coil. This reading will be lower than the battery measures at rest, when not firing, the difference is the voltage drop of the battery.

 

[MamaTried]

i agree with all the above.

>I didn't think that a higher amp limit meant increased current. Am I wrong?

nope. you're right. a nuclear power plant (assuming 4.2V) can't shove more amps thru your .5ohm coil than a new battery can.


your pannies are shot, or close to it. should be easy to test using the method FB posted. if you can actually sense a big difference in the performance of the pannies compared to the new ones, then i'm guessing the vdrop diff would be significant, if you do FB's test on the old and new batts.

 

[Dougiestyle]

Thanks, y'all! I can wrap my head around your responses and it all makes sense, now. I no haz confusez now.

 

[pennysmalls]

I have been suspecting that two of my IMR 18650's are about ready to be retired. they are a year old but have seen lots of vaping action. What kind of voltage drop would I see with a worn out IMR versus a new one? I did test one of them this morning under load and the voltage dropped from 4.01 to 3.85. Is this considered in the normal range for a drop or is it to much? I have three of them and one is new and I forgot to mark it so I need to figure out which is the new one and which two are the older, I'm suspecting the voltage drop under load will help me figure this out but I need to know what kind of voltage drop to watch for.

 

[Filthy-Beast]

Hard to tell since each battery is different and each mods is different, plus as the coil ohm drops the voltage drop will increase. A new battery for me on a 1.2 ohms coil only drops about .09 volts, so from 4.19 to 4.10

If your fully charged battery is only reading 4.01 something is wrong, they should read around 4.2

 

[Ian444]

I did test one of them this morning under load and the voltage dropped from 4.01 to 3.85. Is this considered in the normal range for a drop or is it to much? I have three of them and one is new and I forgot to mark it so I need to figure out which is the new one and which two are the older, I'm suspecting the voltage drop under load will help me figure this out but I need to know what kind of voltage drop to watch for.

As FB said the voltage drop will vary with the ohms of your coil. But, you can use your mod as a test bed to compare the 3 batteries. When fully charged, read the voltage of each battery, then put each in your mod and check the voltage under load. Use a pen and paper to record the unloaded and loaded voltages. The newest battery should have the least voltage drop.

ETA - your voltage drop of 0.16V (4.01-3.85) is nothing to worry about IMO.

 

[pennysmalls]

Thanks Ian!