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Voltage drop
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Don Offline
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Post: #31
RE: Voltage drop
New additions into an 0.3 ohm Igo-M

These are not directly comparable to the previous numbers as a lower resistance atty is being used. I'll retest them all at some point.

Done with an inline voltmeter and the same VTC4 cell as before. According to the fancy charger, the cell is in good nick.

K102:

V.Batt 4.17V

V.F 3.68V

Drop 0.49V



Caravela clone (SS)

V.Batt 4.16V

V.F 3.72V

Drop 0.44V





Polished brass Stingray clone - thanks Johnny and Spas!

V.Batt 4.16V

V.F 3.75V

Drop 0.41V





For comparison under the same regime as the others:

Brass M16

V.Batt 4.16V

V.F 3.56V

Drop 0.6V    Which surprises me. Must clean the contacts.


The Stingray seems to hold up rather nicely.



Quick and dirty tests. I might get around to testing the whole herd with different cells tomorrow.





Or might not.

TVF tested battery info to be found here

http://www.preventsuicideapp.com

[Image: 24291313393_16615b20b2_m.jpg]
24-05-2014 09:47 PM
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Don Offline
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Post: #32
RE: Voltage drop
Done with an inline voltmeter so don't read too much into these results. I'll do them all properly with a Fluke meter sometime soonish once I've had a bout of contact cleaning. The same VTC4 cell as the other tests - the same 0.3 ohm Igo-M. The Vamo calls it 0.2 ohms so take your pick. A heavy load anyway.


Focalecig Panzer clone. 
Battery voltage:    4.17V
Firing voltage:      3.68V
Voltage Drop:       0.49V

Not great but may be twiddleable. 

TVF tested battery info to be found here

http://www.preventsuicideapp.com

[Image: 24291313393_16615b20b2_m.jpg]
28-05-2014 04:29 PM
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JohnnyMac Offline
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Post: #33
RE: Voltage drop
I'm curious how much voltage drop is caused by the inline meter itself what with it's likely thin wiring inside of it and all the added resistance those wires and the extra connection points cause.  Looking forward to you testing with the Fluke. Wink
28-05-2014 05:10 PM
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gords1001 Offline
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Post: #34
RE: Voltage drop
Thats the very reason I fail to see the point in those meters johnnymac, some youtube reviewer idiot was telling me to expect a drop to 3.2v under a 1.5ohm load as that's what his results give.......I asked him if he used an in line meter or a multimeter on the terminals and he couldn't grasp what I meant.....apparently you can only test with an inline tankometer.

I've stopped bothering with their reviews since, some of the information they give out is quite frankly dangerous, never mind misguided.
28-05-2014 05:53 PM
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Spasmod Offline
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Post: #35
RE: Voltage drop
I'm like that with a lot of them now Graham, over time you begin to realise that a lot of these folk are quite literally fumbling thier way through and not really having a clue what they're actually talking about.
28-05-2014 07:11 PM
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Don Offline
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Post: #36
RE: Voltage drop
Indeed!

So here goes with some better numbers.

Followed by here stops: I have a box of 10 new 9V batteries for the meters somewhere. Unfortunately not where I am just now. Off to play hunt the battery Sad

Some preliminary numbers to be taken with a lot of salt - dying battery in meter. This was into a dewicked Igo-M at around 0.2-0.3 ohms. The same VTC4 cell used for each test and a reasonable 4 digit multimeter to measure voltage which is usually the most accurate range on any meter.


Brass M16
V.Batt: 4.184
V.Fire: 3.257
Drop: 0.927V

Stingray
V.Batt: 4.158
V.Fire: 3.445
Drop: 0.713V

Panzer
V.Batt: 4.114
V.Fire: 3.175
Drop: 0.939V

Hammer
V.Batt: 4.108
V.Fire: 2.41
Drop: 1.698

TVF tested battery info to be found here

http://www.preventsuicideapp.com

[Image: 24291313393_16615b20b2_m.jpg]
28-05-2014 08:02 PM
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Don Offline
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Post: #37
RE: Voltage drop
Found the batteries so remeasuring in progress.

The ultimate aim is to do all of them with a VTC4, an LG HE2 a Samsung 15M and a 1500mAh Efest IMR. 

This will take time and my threshold of boredom isn't that high....

Thus far, the Stingray has the best volt drop at 0.589V into 0.2 ohms.

TVF tested battery info to be found here

http://www.preventsuicideapp.com

[Image: 24291313393_16615b20b2_m.jpg]
28-05-2014 09:07 PM
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gords1001 Offline
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Post: #38
RE: Voltage drop
The stingray has certainly woke upy freshly cleaned trident, its back to a hot vape despite me taking the airholes out to 3.5mm
29-05-2014 06:09 AM
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Don Offline
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Post: #39
RE: Voltage drop
Here are the numbers so far

Stingray
0.589V


Private V.2
0.676V

Brass M16
0.695V

Panzer
0.701V

Hammer
1.698V

Myth
1.793V

TVF tested battery info to be found here

http://www.preventsuicideapp.com

[Image: 24291313393_16615b20b2_m.jpg]
29-05-2014 09:55 AM
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Spasmod Offline
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Post: #40
RE: Voltage drop
that's some pretty large volts drop at 0.2 ohms. It'd be real interesting to see how a 26650 IMR would hold up - just thinking out loud about the Hades or Big Nasty mods etc.
29-05-2014 10:00 AM
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