I have a few technical questions regarding resistance and Voltage.

[relink2013]

I hope it's Ok that I posted 2 different threads, I didn't feel that these questions really fit in the other thread.

I want to check the resistance of my Coil which claims to be 1.8Ohms, I put one probe of my multimeter to the threads, and the other to the bottom part of the coil that sticks out of the middle, and it read 2.5Ohms...So am I reading the resistance from the wrong locations, or does Aspire have no QC? I ask because the coil even has 1.8Ohm written on the side of it, so to read 2.5 makes me wonder weather or not Aspire is a trustworthy company...

I was also going to ask about where to check the voltage of my battery, but I figured that part out before I even got to type it. After about 2 hours of use my Spinner II is putting out 4.78V So I'm pretty happy about that, to be honest I was expecting much worse.

 

[Midniteoyl]

Before you check Ohms, touch your two leads together and see what reading you get just from the leads and tips. They have resistance too and must be accounted for. Some meters will 'zero out' automatically when this is done so will show a reading then drop to zero. Some have a button you push to zero out, and others (most cheapies) dont zero at all.

Good contact and making sure your not touching the tips are some other conductive surface is a must too..

 

[relink2013]

I made sure my meter was zeroed out first, and i was very careful to make sure i wasn't touching anything else. I tested it 5 times, and got the same reading every time.

 

[hp600x]

Hi, I have had the same problem with a few heads, should be 1,8, but ends up at 2,2 to 2,5 ohms, quality controll is not always the best.
If you have a spinner / twist , just crank it up a bit.
HP

 

[Midniteoyl]

Must be a bad batch.. Or clones.. The last box of Aspire coils I got all read exactly 1.8ohms. I hear some Kangor coils being higher than rated too lately.

Other thing it could be is that the coils are actually 1.8, but theres extra material on the coil heads adding to the resistance.

 

[Sarin]

Possibly a bad batch or labelled wrong? I know that Kanger have had some serious issues with their QA, never mind the wrong resistance, loads of their coils never even work from the get go!

 

[Forkeh]

Probably just bad quality control. Although there is a possibility that your meter is inaccurate. I suggest you test something you are certain of, and see if it's reading accurately at all (possibly the DC of a freshly charged battery?).

 

[relink2013]

I probably should have mentioned that I own an electrical manufacturing company. I have racks of fluke meters that are checked every quarter as they are used in our own QC department. That's actually what sparked me to check the resistance of my ecig, I wanted to see how close it really was to 1.8Ohm. Needless to say 2.5 is nowhere near 1.8, lol. But like I said I am impressed to see my spinner II outputting well within a reasonable tolerance.

 

[Twicehorn]

Pretty much all heads are crap as far as quality control. You are fairly lucky if it works at all. AFAIK, all of this stuff is made in China and as you are probably aware, unless someone forces QC on the Chinese, it is largely a foreign concept.

Who cares though. For all our metering and whatnot, vaping is not really all that precise and how bad is it going to hurt to turn up your voltage until that coil goes kablooie.

Aspire seems to be as good as any and better than most.

 

[Midniteoyl]

I probably should have mentioned that I own an electrical manufacturing company. I have racks of fluke meters that are checked every quarter as they are used in our own QC department. That's actually what sparked me to check the resistance of my ecig, I wanted to see how close it really was to 1.8Ohm. Needless to say 2.5 is nowhere near 1.8, lol. But like I said I am impressed to see my spinner II outputting well within a reasonable tolerance.

Heh.. that would have negated my first answer..

 

[Midniteoyl]

Pretty much all heads are crap as far as quality control. You are fairly lucky if it works at all. AFAIK, all of this stuff is made in China and as you are probably aware, unless someone forces QC on the Chinese, it is largely a foreign concept.

Who cares though. For all our metering and whatnot, vaping is not really all that precise and how bad is it going to hurt to turn up your voltage until that coil goes kablooie.

Aspire seems to be as good as any and better than most.

Disagree.. Most coils I have have all been good and within .1.

 

[relink2013]

Well maybe it was just a bad batch. Ill be picking up a Kangertech Aero tank tomorrow anyway, so my Aspire will just be my backup.