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Thread: ITaste VTR battery question.

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    Quote Originally Posted by Baditude View Post
    *AW IMR 18350 ​(700mah) 6A

    **The Panasonic NCR18650B 3400mAh is not a high drain battery and only has a 6.8 amp limit.

    Battery Basics for Mods: IMR or Protected?
    Might a 6.8 amp limit be sufficient for the VTR? Is there any way to calculate the max draw on a buck boost unit?

    I note this also because you have listed the AWIMR 18350 which only has a 6 amp limit (as it is a shorter battery with less capacity, obviously). Nonetheless, the NCR18650B would be superior to the AWIMR 18350, no?
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    Quote Originally Posted by VapPornRules View Post
    Might a 6.8 amp limit be sufficient for the VTR? Is there any way to calculate the max draw on a buck boost unit?

    I note this also because you have listed the AWIMR 18350 which only has a 6 amp limit (as it is a shorter battery with less capacity, obviously). Nonetheless, the NCR18650B would be superior to the AWIMR 18350, no?
    The goal is to not exceed a battery's capabilities by not asking it to supply more than it is able to. It will try to do more than it is able to, but the result will be an over-heated battery which will begin to degrade internally and potentially proceed to destroy itself in thermal runaway.

    As long as you know the battery's continuous discharge rate (amp draw), you can use Ohm's Law to decide if you will be using a battery within its safe capabilities. When you know the coil resistance and the voltage used, you can find the amps needed to fire the coil. The "current" will be the amperage used.

    Ohm's Law Calculator

    The big difference between the 3400mah Panny and the 700 mAh AW is in the chemistry of the batteries. The AW is a high drain IMR battery which has a higher reserve of burst power than the Panasonic, whose chemistry is not a high drain, but a high capacity NCR designed for higher mAh in lower amperage applications. Different chemistries for different applications.

    The Panasonic NCR18650B may struggle with the demands of a regulated mod, while the AW will not. There's more to picking a battery than just a higher mAh rating, which can be a rather dubious figure anyway. It's really not fair to compare an 18350 battery with an 18650; but just the fact that the smaller AW has a similar amp rating to the larger Panasonic suggests the Panasonic being subpar in the amperage category for its size.

    The Panasonic NCR18650B is "best suited" for a mechanical mod using common commercially-made low/standard resistance coils. That is the reason that I did not include it in the recommended list. All the others in the list can be used for all applications in both regulated or unregulated mods.

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    Quote Originally Posted by Baditude View Post
    The goal is to not exceed a battery's capabilities by not asking it to supply more than it is able to. It will try to do more than it is able to, but the result will be an over-heated battery which will begin to degrade internally and proceed to destroy itself in thermal runaway.

    As long as you know the battery's continuous discharge rate (amp draw), you can use Ohm's Law to decide if you will be using a battery within its safe capabilities. When you know the coil resistance and the voltage used, you can find the amps needed to fire the coil. The "current" will be the amperage used.

    Ohm's Law Calculator

    The big difference between the 3400mah Panny and the 700 mAh AW is in the chemistry of the battery. The AW is a high drain battery which has a higher reserve of burst power than the Panasonic whose chemistry is not a high drain, but an extended NCR chemistry.

    The Panasonic is best suited for a mechanical mod using commonly used low or standard resistance coils.
    Right, but on a VV device, do I know what voltage to use in the Ohm's law equation? It seems like I don't. Do I use the battery voltage or the "set" voltage?

    If I have a Panasonic with a max discharge rate of 6.8 amps, I guess I can safely use it at 6 volts with a 1 ohm resistor, correct? (Ohm's law tells me its a 6 amp draw). But this doesn't make sense - if the battery is low on charge (say 3.4 volts), on a 1 ohm resistor, Ohms law tells me I am only drawing 3.4 amps. It seems to me that I don't have sufficient information to apply Ohm's law.

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    Quote Originally Posted by VapPornRules View Post
    If I have a Panasonic with a max discharge rate of 6.8 amps, I guess I can safely use it at 6 volts with a 1 ohm resistor, correct? (Ohm's law tells me its a 6 amp draw). But this doesn't make sense - if the battery is low on charge (say 3.4 volts), on a 1 ohm resistor, Ohms law tells me I am only drawing 3.4 amps.
    Your regulated device has built-in amp limits. I doubt that it would fire a 1.0 ohm coil at 6 volts (6 amps) due to its amp limit (3.5 amps?).

    I never said that the Panasonic NCR18650B couldn't be used in a regulated mod, but it is not the best suited battery for one. An IMR safe chemistry battery will allow for a more optimal performance.

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    Quote Originally Posted by Baditude View Post
    Your regulated device has built-in amp limits. I doubt that it would fire a 1.0 ohm coil at 6 volts (6 amps) due to its amp limit (3.5 amps?).
    Right, but the point is Ohm's law does not appeart to be the right equation to use here. On a mechanical, unregulated device, the current drops as the battery voltage drops. On a regulated device, I would expect the current might actually INCREASE as the voltage drops in order to maintain the vape. Because we are talking about regulated devices, we need to understand how they work in order to understand what the maximum current draw is at any given time. I defiinitely do not understand how they work and I am looking for someone to explain it to me! Ohm's law is not the answer.

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    This is what I was looking for

    Technical - Why High Drain Batteries?
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    Quote Originally Posted by STLBluesNut View Post
    The listings I have seen for the VTR have the compatible batteries listed as "18650(without protection)". What does this mean? Is one supposed to use unprotected batteries with this device? I can't imagine that is the case.


    You have to use unprotected, because a protected 18650 is too long and the battery door will not close on the VTR.
    Last edited by Michael Curry; 10-22-2013 at 03:09 AM. Reason: Added quote from OP
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    Quote Originally Posted by Michael Curry View Post
    You have to use unprotected, because a protected 18650 is too long and the battery door will not close on the VTR.
    Again, there's a purpose to that. The VTR is a regulated mod and was designed to use an IMR high drain (IMR) battery, which are unprotected because of their safer chemistry.

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    Last edited by Michael Curry; 10-22-2013 at 05:06 AM. Reason: Just ain't worth it
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    mine had the same Samsung battery as my evic in it. after 36 hours of moderate vaping it has yet to turn yellow on the button. I put the battery in my evic and it said 59% remaining. awesome

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