Battery Voltages -- Surprise!

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h8isgr8

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I don't know the size of all the batteries you tested, but my KR808 batteries are about 100mAh larger than the other batteries I own

Have you measured the unloaded voltage of some of the batteries you tested?

I know I have a few super mini's and 510 batteries that only output ~3.8V fully charged (probably due to the internal circuitry like you said)
.
 

Scottbee

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I don't know the size of all the batteries you tested, but my KR808 batteries are about 100mAh larger than the other batteries I own

Have you measured the unloaded voltage of some of the batteries you tested?

Naw.. I didn't measure the unloaded voltage. I know that the unloaded voltage is pretty much a useless number.
 

Scottbee

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I'm actually thinking of ordering a KR808d-1 battery with an adapter for the 510. Has any used this combination and what was the results.

Yes, I have the adapter (made one) and that's how I was able to run these tests.

The result is pretty much what you would expect based on the voltage numbers. Better/stronger vapor than with my 510 Megas.
 

Scottbee

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I guess this is why everyone raves about the Vaporking/kr808. They put out constant 3.7V.

Yes.. but. Then the KR808D-1 couples that great battery voltage to a 3+ Ohm cartomizer. Knocks it right back down to ~4.5 Watt device.

Run a KR808D-1 carto at 5V and you just go "Whooooaa!".
 

Cielo

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Kanger is the manufacturer of genuine KR808D-1 batteries. The "KR" designates a Kanger model.

I don't know if there are any non-Kanger knock-offs out there or not.

There are non-kanger kr808-1 and lecig carries them. I have both automatic models. The non-kanger one looks nicer and has a longer shut off time. Otherwise, I cant tell a difference.
 

WillyB

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Kanger is the manufacturer of genuine KR808D-1 batteries. The "KR" designates a Kanger model.

I don't know if there are any non-Kanger knock-offs out there or not.
There are a few it would seem. Perusing the various 2nd tier Chinese manufacturers (who all seem to claim that they are one of the first e-cig makers) I've seen some cartomizer offerrings. They all have had 901 type batts anyway, for them to make them cartomizer friendly is an easy task. In our retail market it's hard to tell who is selling what. Some suppliers are selling '902' batts for their cartomizers. Is this simply a marketing ploy? Others are being said to be switching from Kranger for their cartomizer batts. One supplier flat out states (how refreshing) that their batts are not Kranger (LeCig).

What I find interesting is why all the bad mouthing of the Joye 510 PT? Your numbers indicate that the vaping experience should be slightly better than using a standard 510 batt or even the new eGo. Maybe simply modifying the PT with a cheap AA bat holder to hold a 14500 battery would make it a decent device with numbers like your Bartleby example. I wonder if your PT numbers would correlate to all 10440 battery PVs.

As usual, your post has caused to me to re-think everything I thought I knew. Thanks :)
 

Libertysf

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There are a few it would seem. Perusing the various 2nd tier Chinese manufacturers (who all seem to claim that they are one of the first e-cig makers) I've seen some cartomizer offerrings. They all have had 901 type batts anyway, for them to make them cartomizer friendly is an easy task. In our retail market it's hard to tell who is selling what. Some suppliers are selling '902' batts for their cartomizers. Is this simply a marketing ploy? Others are being said to be switching from Kranger for their cartomizer batts. One supplier flat out states (how refreshing) that their batts are not Kranger (LeCig).

What I find interesting is why all the bad mouthing of the Joye 510 PT? Your numbers indicate that the vaping experience should be slightly better than using a standard 510 batt or even the new eGo. Maybe simply modifying the PT with a cheap AA bat holder to hold a 14500 battery would make it a decent device with numbers like your Bartleby example. I wonder if your PT numbers would correlate to all 10440 battery PVs.

As usual, your post has caused to me to re-think everything I thought I knew. Thanks :)

I also would be interested in the voltage on the 10440 batteries. I seem to get a better vape on the USB PT and my Joye Stick V3 which both use the 10440 battery.
 

BuzzKill

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The ratings on E-cigs is NOT standardized ! , they should be rated in POWER or WATTS ( this takes into account the atty resistance , battery voltage and any circuit resistance ) .

Scott has shown a very important function of the PV , the POWER they deliver, this controls your VAPE ( because it accounts for all of the V/I/R of the circuit ) this is why when you change to a different atty ( say a 801 -901 ) you have different results in the vaping. ( assuming all other things are equal ! i.e. liquid, state of the batteries , life of the atty , atty resistance etc. )

The ultimate would be to have a controllable Wattage device , that can be adjusted.

Mfg's SHOULD rate the E-cigs in WATTS delivered IMO

Good work Scott !!
 
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Scottbee

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What I find interesting is why all the bad mouthing of the Joye 510 PT? Your numbers indicate that the vaping experience should be slightly better than using a standard 510 batt or even the new eGo. Maybe simply modifying the PT with a cheap AA bat holder to hold a 14500 battery would make it a decent device with numbers like your Bartleby example. I wonder if your PT numbers would correlate to all 10440 battery PVs.

As usual, your post has caused to me to re-think everything I thought I knew. Thanks :)

Willy,

Your post makes an interesting point.. which makes for an interesting question. Which... made me run another test (sorry, no pictures, you'll just have to trust me!).

When the handpiece of my Joye PT is delivering ~3.1V to the atty, the voltage of the in-line battery reads a solid 3.95V on my meter.

What does that tell us? It tells us that the voltage drop (loss) on this passthrough is a function of the resistance of the PT wire (from the battery to the handpiece) and the FET switch in the handpiece.

I'm going to say with some confidence that Joye uses the same switch in the PT handpiece that they use in the manual batteries. And that FET switch costs us about .5V!

Pull that switch out.. replace it with a 3A manual mechanical button.. and the PT will perform much differently.
 

h8isgr8

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Jul 24, 2009
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Here are the results from a similar test I just did.

Just as Scott did, I connected 2R5 load and powered it for approximately 20 seconds before I took the pics. The circuit is activated by a micro-switch turning on the gate of a small FET.

The batteries were fully charged and both were relatively new and working perfectly fine before I removed them from the e-cig casing.

The difference in voltage drop measured directly across the battery as apposed to across the load was negligible.

This first pic is of a super-mini battery; somewhere in the <150mAh range......

2mqthlj.jpg


And this pic is of a KR808-D1 battery; approximately ~280mAh......

2wncwuq.jpg


Anyway, like I previously stated; it's as simple as......

Larger capacity battery = Less voltage drop (all other variables the same).
 

Nietzsc

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Sep 27, 2009
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Willy,

Your post makes an interesting point.. which makes for an interesting question. Which... made me run another test (sorry, no pictures, you'll just have to trust me!).

When the handpiece of my Joye PT is delivering ~3.1V to the atty, the voltage of the in-line battery reads a solid 3.95V on my meter.

What does that tell us? It tells us that the voltage drop (loss) on this passthrough is a function of the resistance of the PT wire (from the battery to the handpiece) and the FET switch in the handpiece.

I'm going to say with some confidence that Joye uses the same switch in the PT handpiece that they use in the manual batteries. And that FET switch costs us about .5V!

Pull that switch out.. replace it with a 3A manual mechanical button.. and the PT will perform much differently.

That's why I get better vapor and TH from my flashlight mod (with 10440) no FET messing with my volts :thumbs:
 

CJsKee

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Excellent, Scottbee...thanks for this!! I just barely know Ohms from Mah (or at least I think I know LOL), so all of this is kind of greek to me. BUT, I just put my 510 atty on one of my Kr8 mega batteries and it performed exactly like it does on my Protege! Great discovery!! No more 510 batteries for me...and I can get the Kr8 megas from Heaven Gifts at an excellent price.
 
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