18650 battery question???

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degnr8

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For what you're doing, the higher mah is just fine. You're right though about lower mah having a niche. Increasing mah lowers maximum amp output, which in turn increases you minimum resistance to use it safely. The sub-ohm guys need really high discharge rate, but for the higher resistance levels it isn't as necessary. When you get your battery you'll want to see what the chemistry is (though coming from a reputable vape dealer it should be IMR) and check Baditude's blog to get your C rating. from there you can see how low is too low with your coils. I think I know which battery you're talking about and as long as you're not going sub-ohm you should be fine.
 

Baditude

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I checked several websites that are selling the VTR, and the only battery information available was: "Replaceable Battery: iTaste VTR supports 18650 batteries (unprotected)"

Typically, "unprotected" means a safe-chemistry, high-drain IMR or hybrid battery.

The only 3400 mAh battery that I know of is the Panasonic NCR18650B which is a protected battery, and not high drain nor safe chemistry. It also sells for a whopping $18.50. Orbtonic has a disclaimer on this battery's page listing:

"Protected Li-ion 18650 batteries are made for high performance flashlights, not for e-cig mods."


The highest mAh battery that is unprotected and high drain is the Orbtronic NCR18650PD 2900 mAh hybrid battery for $14.

The Panasonic NCR18650PD 2900 mAh is essentually the same battery for only $11.
 
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BardicDruid

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The only 3400 mAh battery that I know of is the Panasonic NCR18650B which is a protected battery, and not high drain nor safe chemistry. It also sells for a whopping $18.50. Orbtonic has a disclaimer on this battery's page listing:

"Protected Li-ion 18650 batteries are made for high performance flashlights, not for e-cig mods."
That's if you buy a Panasonic with a protection PCB, Panasonic has sold their batts with or without the protection for as long as I can remember. I've been using the NCR18650B in my mod for about 6 months now, there alright to use if you not using a variable or regulated device and not going under 1.2 ohms.
 

Myk

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The only 3400 mAh battery that I know of is the Panasonic NCR18650B which is a protected battery, and not high drain nor safe chemistry. It also sells for a whopping $18.50. Orbtonic has a disclaimer on this battery's page listing:

Wrong on all counts.

While there are some protected NCR18650B's not all have a protection circuit (I use them in my Vamos and eVics which won't work with protected batteries).
All NCRs that I have found are "New Nickle Platform" meaning they are safe chemistry (sounds like along the lines of what people call "hybrids").

As far as high drain, that depends on what you call high drain. They're not 10a but they are high enough to handle some sub-ohm drains. PD is a higher drain (10a I think) but that's only required if your application demands it.

Not only all of that but IMO NCRs are safer than IMR and CGR. (I tried oxidizing a wick with my CGR's and they got scary hot, scary fast, never a problem using my NCR's.)

NCR18650B is the optional battery that you can get officially from Joyetech for eVics.
For my average use (vv/vw 2Ω) B is my preferred battery. For extreme situations A is next up (and I watch the drain because it's also not a 10a battery). I really don't like PDs.
 

ITPython

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For what you're doing, the higher mah is just fine. You're right though about lower mah having a niche. Increasing mah lowers maximum amp output, which in turn increases you minimum resistance to use it safely. The sub-ohm guys need really high discharge rate, but for the higher resistance levels it isn't as necessary. When you get your battery you'll want to see what the chemistry is (though coming from a reputable vape dealer it should be IMR) and check Baditude's blog to get your C rating. from there you can see how low is too low with your coils. I think I know which battery you're talking about and as long as you're not going sub-ohm you should be fine.

Incorrect, having a higher mAh capacity means more amps can be drawn from the battery safely. Although with IMR batteries it is not a linear gain. For example a 2000mAh AW IMR has a max safe discharge at 10A, which would be 5C. However a 700mAh AW IMR battery is rated to discharge at 6A, which would be about 8.5C. So while it has a higher discharge rate in relation to it's capacity, it is still lower than a higher capacity IMR (6A for 700mAH vs 10A for 2000mAH).

Same basically applies to protected Li-Ion as well, however generally for all of them the max discharge is 2C. But either way you go, having more mAh means you can have a higher amp discharge.
 

Criticalmass

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MAH rating is the "approximate" life of a full battery charge - MilliAmpere-Hour. The advertised voltage, which most likely is 3.7volts, is where your "power" comes from. For example mine is a 2000mAh 18650. Almost all of them are 3.7v.
Do you have a link for the battery you purchased?

It is probably the Panasonic. It's the only one I have seen rated at 3400. They have them on amazon I believe.

http://www.amazon.com/Panasonic-NCR...id=1383436015&sr=8-2&keywords=18650+panasonic

Here it is. Unprotected per item description. fulfilled by Amazon so it is eligible for prime (free) shipping. It's a 2 pack so they come out to be 11.50 a piece and if you have prime the shipping cost is nothing.
 
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Baditude

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But either way you go, having more mAh means you can have a higher amp discharge.
I'm having trouble following your logic here. My understanding is higher amp discharge is directly related to the C rating of the battery, not solely on battery mAh capacity. I know they are interrelated, how do you explain the higher amp ratings of the lower mAh batteries like the AW 1600mAh, MNKE 1500mAh, and Efest 1600mAh having amp discharge rates of 24, 20, and 30 than a NCR18650PD 2900mAh that has only 10A?

AW IMR 18650 1600mah 24A

MNKE IMR 18650 1500mah ​20A

Efest IMR 18650 1600mAh 30A

Panasonic/Orbtronic NCR18650PD 2900mAh 10A​

On a side note, the Panasonic/Orbtonic NCR18650B 3400 mAh has a 6.8 amp rating.
 

Thrasher

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I have to agree with BAD here. the cathode design and chemistry is more deciding of the ratings then just the MAH capacity. while what your saying may have been true with just regular Li batteries the newer chemistry batteries are being tuned and even manufacturers point out that after a certain point you either get very high current or very high MAH you cannot tune the battery for both.

panasonic and a few others are trying (which is giving rise to all these hybrids) but certain physical and chemical limits will be reached.

so far I have never seen a battery above 2500Mah with a (continuous) discharge rating over 10 amps.

case in point: the new PF battery from panny - they couldnt get any more current so they reformulated the PD to get a few 100 more Mah a better discharge and to run cooler under high loads.

and as he points out that hugh 3400 is only a measly 6.8 amps (continuous), they have to make a trade off somewhere to keep it within the 18650 size specs. (still a great battery in a mech running .8 ohms or higher though)
 
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AttyPops

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Interesting turn of conversation. lol. My limited understanding is:

The physical SIZE and to some degree SHAPE of the battery affects the resistance and the discharge rate. So larger batteries (which have more electrolyte and thus more mAh) hold more charge and have higher amp discharge for a given chemistry. However, chemistry matters more as that determines the effective internal resistance more than anything else. And it's the internal resistance that generates heat as it's used. The electrolyte in turn has a breakdown point (which could vary depending on chemistry).

And as any Borg will tell you, it's all about overcoming the resistance.

So Bigger battery = more mAh is true in a sense. And more mAh is more amps in a sense (but not always!) because more mAh = bigger.
And high drain chemistry = more amps, but less electron storage (compared to other chemistries, which may not be high drain).


And then there's "Hybrids" and newer chems all the time.

So cool it gals, you're all pretty. :D :lol:

But check specifics.
 
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Baditude

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Ok.... now that we've cleared that up. On to drip tips....swirly purple plastic or skull with top hat? Lol
sagewood_dt (1542).jpg

Nahhhh, glass baby. Smooth as glass. :D
 

WarHawk-AVG

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Wrong on all counts.

While there are some protected NCR18650B's not all have a protection circuit (I use them in my Vamos and eVics which won't work with protected batteries).
All NCRs that I have found are "New Nickle Platform" meaning they are safe chemistry (sounds like along the lines of what people call "hybrids").

As far as high drain, that depends on what you call high drain. They're not 10a but they are high enough to handle some sub-ohm drains. PD is a higher drain (10a I think) but that's only required if your application demands it.

Not only all of that but IMO NCRs are safer than IMR and CGR. (I tried oxidizing a wick with my CGR's and they got scary hot, scary fast, never a problem using my NCR's.)

NCR18650B is the optional battery that you can get officially from Joyetech for eVics.
For my average use (vv/vw 2Ω) B is my preferred battery. For extreme situations A is next up (and I watch the drain because it's also not a 10a battery). I really don't like PDs.
Wait...what? Did you just call out Baditude on batteries?
 
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