Insanely high voltage drop?

[asvaldr]

I'm using Sony vtc4 battery and got this reading on my hcigar nemesis with my oakley haka voltage tester

But when i tested with my hcigar trident v1 on it i got this

With Aga T2

I haven't tested it with my other atty though, can anyone explain it to me? Is it caused by the tester, atty, or the mod?

Sent from my GT-P6200 using Tapatalk

 

[Ryedan]

Two questions for you.

Have you taken the Nemesis apart and cleaned all the contact surfaces?

What resistance are the attys and how many charge/discharge cycles are on that battery?

 

[asvaldr]

I cleaned my nemesis for the testing and my battery is 1 week old, the resistance on trident is .9-1 ohm and aga t2 is 1-1.1 ohm thanks for replying btw[emoji6]

 

[Ryedan]

I cleaned my nemesis for the testing and my battery is 1 week old, the resistance on trident is .9-1 ohm and aga t2 is 1-1.1 ohm thanks for replying btw[emoji6]

You're welcome asvaldr

My Nemesis makes around 3.8V with a charged VTC4 and a 0.5 ohm atty. With a 1 ohm atty yours should be higher than that. I got around 1V drop under load with 1 1/2 year old, worn out 18650s before I replaced them.

Something is wrong. I think your voltmeter is good because it reads correct (or very close to that) with the battery only. It's not the attys because the same thing is happening with all of them.

That leaves the mod and the battery.

You said you cleaned the mod. Did you take the switch assembly completely apart and clean all the contact surfaces? If not, I would do that next.

If you did completely clean the mod, the only thing left is the battery. A real Sony VTC4 at one week old will not perform like this. Where did you buy it from? I've never heard of a counterfeit VTC4, but there is always a first time. Here's a link to How to Spot a Fake Sony VTC5 battery. Also, if you have another battery in good condition you can also try, if that does the same you will know it's the mod. At 0.9 ohms you're drawing around 5 amps, so almost any IMR or hybrid battery will be safe to try, even a 18500 or a 18350. Here's a chart that has battery amp ratings. Don't use a ICR battery, or one that you're not sure of the amp limit on.

 

[asvaldr]

You're welcome asvaldr

My Nemesis makes around 3.8V with a charged VTC4 and a 0.5 ohm atty. With a 1 ohm atty yours should be higher than that. I got around 1V drop under load with 1 1/2 year old, worn out 18650s before I replaced them.

Something is wrong. I think your voltmeter is good because it reads correct (or very close to that) with the battery only. It's not the attys because the same thing is happening with all of them.

That leaves the mod and the battery.

You said you cleaned the mod. Did you take the switch assembly completely apart and clean all the contact surfaces? If not, I would do that next.

If you did completely clean the mod, the only thing left is the battery. A real Sony VTC4 at one week old will not perform like this. Where did you buy it from? I've never heard of a counterfeit VTC4, but there is always a first time. Here's a link to How to Spot a Fake Sony VTC5 battery. Also, if you have another battery in good condition you can also try, if that does the same you will know it's the mod. At 0.9 ohms you're drawing around 5 amps, so almost any IMR or hybrid battery will be safe to try, even a 18500 or a 18350. Here's a chart that has battery amp ratings. Don't use a ICR battery, or one that you're not sure of the amp limit on.

To be honest i dont know is it sony vtc 4 i thought it was vtc4 because of the spec

 

[Ryedan]

To be honest i dont know is it sony vtc 4 i thought it was vtc4 because of the spec

Yes, they are VTC4. Who did you buy them from? I'm asking because if the supplier is known to be good that pretty much assures the batteries are legitimate Sonys.

BTW, you didn't say if you took the switch apart to clean

 

[asvaldr]

I got it from one of my trusted local online shop in Indonesia, i never got any faulty order maybe i got unlucky this time[emoji53]

I'll take everything apart and clean it then take the test again i'll tell you the result after that

And once again thanks for your feedback[emoji1]

 

[crxess]

Nothing to do with Faulty.
Nemesis Mods are usually excellent, but they still require and initial Strip down and full cleaning before use.
I strip and run mine through a 20 minute Ultrasonic cleaning cycle
Wipe everything down good once clean

Also clean all your 510 device threadings

 

[asvaldr]

I've taken it all apart and cleaned it then do the test once more with a 18650 vtc4 and 18350 purple efest and the same atty here are the results:
18650

With trident v1 and aga t2


18350

With the same atty


Both of the battery are bought at the same time

Ps: sorry for the crappy image, i took it with my crappy phone

 

[Blackboar]

There might be a chance that the tube was coated by the manufacturer during production and some of the lacquer got on the contact pins and or threads.

Try to use some acetone (nail polish remover) and thoroughly clean the threads, pins, top cap and switch.

 

[asvaldr]

There might be a chance that the tube was coated by the manufacturer during production and some of the lacquer got on the contact pins and or threads.

Try to use some acetone (nail polish remover) and thoroughly clean the threads, pins, top cap and switch.

Thanks for the advice i'll try it later when i have time and post the result

 

[Ryedan]

I've taken it all apart and cleaned it then do the test once more with a 18650 vtc4 and 18350 purple efest and the same atty here are the results:

Unless all your batteries are bad, I think it's an issue with the mod. I've never tried acetone like Blackboar suggested, but it can't hurt . I think there is resistance between at least one pair of contact surfaces that's causing this. If the acetone doesn't fix it, I would have a really good look at all surfaces under a magnifier and if I didn't find anything I would probably use 900 grit sandpaper on them all, carefully, looking/feeling for an area where the paper was not biting into metal.

Inside (female) threads are hard to do this way so I would probably use a thin, sharp tool of some kind to scrape those surfaces. I have a bench grinder so I can make tools like that. If you can't something like a sewing needle could work for you.

'All surfaces' include all that carry current from battery positive to negative.

 

[SLIPPY_EEL]

Nothing to do with Faulty.
Nemesis Mods are usually excellent, but they still require and initial Strip down and full cleaning before use.
I strip and run mine through a 20 minute Ultrasonic cleaning cycle
Wipe everything down good once clean

Also clean all your 510 device threadings

Sorry, can i just ask, can all parts of a tube mech be put into an ultrasonic cleaner?

 

[ImThatGuy]

They should be. Can't see why not.

K...this is revived...no update from OP either...but...Clean all connections, including the connector from the atty to the reader.

 

[AzPlumber]

Take the coil(s) out of one of thos atomizers and then see if you have a drop in voltage.

 

[crxess]

Did you do the one thing most often missed?

Clean the threading on the Meter?

I'd leave an Atty attached after reading
Unscrew the meter
Swap the battery to another mod
attach the meter
take a comparative reading

Just saying......might not be the Mod

 

[UncleChuck]

Maybe I'm missing something, but this definitely seems to be a battery issue.

He shows both his questionable 18650 AND an 18350 in the last pics he posted. The 18650 started with a higher voltage than the 18350, and still the voltage drop was higher with the 18650. If it was an issue with the mod, the meter, or anything OTHER than the battery, why would the 18350 be outperforming the 18650? Something that absolutely should not be happening, unless the 18650 is damaged/fake/bad/etc, which appears to be the case.

No idea if it's a fake battery, maybe just a lemon.

 

[roosterado]

Did you do the one thing most often missed?

Clean the threading on the Meter?

I'd leave an Atty attached after reading
Unscrew the meter
Swap the battery to another mod
attach the meter
take a comparative reading

Just saying......might not be the Mod

I just did this with a new inline meter I got. AR Clone .5 volt drop- K100 1 volt drop. Will monkey around with the K100 but mainly just use it to pulse coils. I think the AR Clone could use a better spring and the button where the spring sits its thin black not paint? Tried Acetone already? Update On the AR Clone button I used fine sand paper to clean the black coating off the fire button where it makes contart with the spring-then I buffed it with a brass wire brush in my drill- then cleaned with acetone. Also cleaned mod threads with acetone. On a 2ohm coil .15 volt drop. on a .8 ohm coil .30 voltage drop.

 

[csardaz]

A bad connection would add resistance to the circuit whether its varnish, spring, switch etc. Added resistance would reduce the current flow and hence the power draw. That should result in less voltage droop, not more.

Extra voltage drop means there is less resistance - so something shorting that shouldn't - an insulator missing? Or it means a bad battery - or a miss-labeled battery like a battery made for 2amps being asked to produce 20amps.

 

[UncleChuck]

A bad connection would add resistance to the circuit whether its varnish, spring, switch etc. Added resistance would reduce the current flow and hence the power draw. That should result in less voltage droop, not more.

Extra voltage drop means there is less resistance - so something shorting that shouldn't - an insulator missing? Or it means a bad battery - or a miss-labeled battery like a battery made for 2amps being asked to produce 20amps.

A bad connection in the mod will still show a higher voltage drop on an inline meter because the resistance in the mod itself is reducing the voltage before it even reaches the atty or meter.

Now if there was a short in the atty that would definitely produce a larger voltage drop as the load on the battery would go up dramatically, but the comparison test between the 18650 and the 18350 shows (at least to me) this has to be a bad battery issue. The 18350 had less voltage drop than the 18650, if the mod or atty was the issue then the 18350 would be dropping a lot more like the 18650.