Need help, please!

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seb74820

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Jun 23, 2021
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I have a somewhat newly bought Kanger subox Mini and have never had any problems with it that worried me, but today, the ohms are jumping from .5 to .6, back to .5 when fired. Is this dangerous? I'm so afraid of blowing my face up! I honestly know nothing about any of the technical stuff. If anyone can reassure me or help, I'd be grateful!
 

Unforeseen

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Where you least expect it....
Since you're using a regulated device, you won't have to worry about the device blowing up in your face. There are safety features embedded into the chip that will protect the user of the device. Only thing that may cause a potential issue would be the battery itself. What battery are you using in it? This may help others identify if that is indeed the problem. Although, this has nothing to do with the fluctuating resistance you're experiencing at this time.

As for ohms fluctuating on the atomizer coil head. This is an indicator that there is some type of short as the resistance should remain stable under normal circumstances. Safe practice would be to switch to a new coil head and throw the problematic coil head away.
 

DaveOno

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Don't worry if it's just going between .5 and .6
Maybe the resistance is .55, and your mod is just trying to round it to the nearest tenth. And maybe the heat is causing this very small variation. I mean, it could be going from .549 to .551, but your mod can only display either a .5 or a .6
And remember, these values are very low.
I'd worry if it was fluxing between .7 and .4
But as Unforeseen says, change it out, if for nothing more than your piece of mind.
 

vaper1960

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Don't worry if it's just going between .5 and .6
I agree. I have a similar mod (Kanger K box mini) Mine has an issue with the center pin on the 510 connection (where the tank screws on) Some tanks don't make perfect connection (and some do)... cause fluctuations in the resistance readings (but worse than you mentioned) so I can only use certain ones on that mod. Make sure the connections are clean (mod and tank) Maybe some juice got in there? Anyway, what you describe is within normal range... no need to worry. Yours has a built-in battery right? (mine is very similar but uses a removable battery)
 

Z-Lee

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  • Apr 17, 2021
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    I agree with the others - it's not big enough deal until that jump starts to go wildly in various directions. My RPM160 when it first arrived, went from 0.18 ohms to 1.22, and anywhere in between after like 40 puffs into it. This is something to be concerned about. As Unforseen has mentioned, I think the biggest concern is the care of your battery. Volts / Ohms = Amps, so if those ohms are jumping enough to put your amperage use above the recommended Maximum Discharge Rate, then that could wear your battery down faster. It still won't blow up in your face, but it could degrade your battery.

    Is the mod getting noticeably/uncomfortably warm in your hands at all?
     

    seb74820

    Full Member
    Jun 23, 2021
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    Since you're using a regulated device, you won't have to worry about the device blowing up in your face. There are safety features embedded into the chip that will protect the user of the device. Only thing that may cause a potential issue would be the battery itself. What battery are you using in it? This may help others identify if that is indeed the problem. Although, this has nothing to do with the fluctuating resistance you're experiencing at this time.

    As for ohms fluctuating on the atomizer coil head. This is an indicator that there is some type of short as the resistance should remain stable under normal circumstances. Safe practice would be to switch to a new coil head and throw the problematic coil head away.
    Thank you for your help!! Murata 18650 INR, I believe.
     
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    seb74820

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    Jun 23, 2021
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    Don't worry if it's just going between .5 and .6
    Maybe the resistance is .55, and your mod is just trying to round it to the nearest tenth. And maybe the heat is causing this very small variation. I mean, it could be going from .549 to .551, but your mod can only display either a .5 or a .6
    And remember, these values are very low.
    I'd worry if it was fluxing between .7 and .4
    But as Unforeseen says, change it out, if for nothing more than your piece of mind.
    Thank you!!
     

    seb74820

    Full Member
    Jun 23, 2021
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    I agree. I have a similar mod (Kanger K box mini) Mine has an issue with the center pin on the 510 connection (where the tank screws on) Some tanks don't make perfect connection (and some do)... cause fluctuations in the resistance readings (but worse than you mentioned) so I can only use certain ones on that mod. Make sure the connections are clean (mod and tank) Maybe some juice got in there? Anyway, what you describe is within normal range... no need to worry. Yours has a built-in battery right? (mine is very similar but uses a removable battery)
    Mine is removable. I tried cleaning everything that I could after reading suggestions, but that wasn't the issue I guess. Thank you!!
     
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    seb74820

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    Jun 23, 2021
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    I agree with the others - it's not big enough deal until that jump starts to go wildly in various directions. My RPM160 when it first arrived, went from 0.18 ohms to 1.22, and anywhere in between after like 40 puffs into it. This is something to be concerned about. As Unforseen has mentioned, I think the biggest concern is the care of your battery. Volts / Ohms = Amps, so if those ohms are jumping enough to put your amperage use above the recommended Maximum Discharge Rate, then that could wear your battery down faster. It still won't blow up in your face, but it could degrade your battery.

    Is the mod getting noticeably/uncomfortably warm in your hands at all?
    No, it's been staying cool. I think the batteries have a max of 4.something volts and my mod looks to be getting to 3.7 but no higher. Thank you!!
     
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    Hawise

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    No, it's been staying cool. I think the batteries have a max of 4.something volts and my mod looks to be getting to 3.7 but no higher. Thank you!!

    You seem a little confused about battery requirements (that's not meant as a criticism - confused is the standard place to start!)

    Your battery is at 4.2 volts when it's fully charged. As it discharges it drops to about 3.2 volts, at which point your mod will tell you that it's low and refuse to fire.

    There's also the voltage that your coil gets, which isn't the same as the battery's voltage. That's the voltage your mod probably shows. With a regulated mod, it isn't a particularly important value.

    If your battery is at 3.4 volts, for example, and your wattage setting means the coil needs 3.7 volts, then your mod will simply pull more current from the battery and use it to 'bump' the voltage up to 3.7 volts at the coil.

    The things you need to know to make sure you're using a battery reasonably safely in a regulated mod are:
    • Battery CDR (continuous discharge rating) - the best way to work this out is to check your battery model against Mooch's tables. You say you have a Murata, but do you know which model it is? VTC6 is probably the most common, but others are often used as well.
    • The wattage you're vaping at
    • The number of batteries in your mod
    If you're interested in seeing the calculation for your setup, try to find out your battery model and I'll show you how it goes.

    Good luck!
     

    BrotherBob

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    I have a somewhat newly bought Kanger Subox Mini
    Welcome and glad you joined.
    Your problem could stem from many different causes.
    Could contact:
    Local B&M Vape Shop (Visit)/someone who knows what their doing -----Might be simple.
    Vendor who sold it ---see if they will repair or replace or advise (any authorized distributor may help).
    Manufacturer contact (Kangertech) ---see if they will repair or replace or advise.
    re:Vape Box Mod Starter Kits Wholesale | LightFire Distribution
     

    seb74820

    Full Member
    Jun 23, 2021
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    You seem a little confused about battery requirements (that's not meant as a criticism - confused is the standard place to start!)

    Your battery is at 4.2 volts when it's fully charged. As it discharges it drops to about 3.2 volts, at which point your mod will tell you that it's low and refuse to fire.

    There's also the voltage that your coil gets, which isn't the same as the battery's voltage. That's the voltage your mod probably shows. With a regulated mod, it isn't a particularly important value.

    If your battery is at 3.4 volts, for example, and your wattage setting means the coil needs 3.7 volts, then your mod will simply pull more current from the battery and use it to 'bump' the voltage up to 3.7 volts at the coil.

    The things you need to know to make sure you're using a battery reasonably safely in a regulated mod are:
    • Battery CDR (continuous discharge rating) - the best way to work this out is to check your battery model against Mooch's tables. You say you have a Murata, but do you know which model it is? VTC6 is probably the most common, but others are often used as well.
    • The wattage you're vaping at
    • The number of batteries in your mod
    If you're interested in seeing the calculation for your setup, try to find out your battery model and I'll show you how it goes.

    Good luck!
    Yes I'm confused about all of it! Haha! My ex used to do all of this for me so I've never had to learn. It's a VTC6.
     

    seb74820

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    Jun 23, 2021
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    Welcome and glad you joined.
    Your problem could stem from many different causes.
    Could contact:
    Local B&M Vape Shop (Visit)/someone who knows what their doing -----Might be simple.
    Vendor who sold it ---see if they will repair or replace or advise (any authorized distributor may help).
    Manufacturer contact (Kangertech) ---see if they will repair or replace or advise.
    re:Vape Box Mod Starter Kits Wholesale | LightFire Distribution
    Thank you! I was considering visiting a shop to see if they could help but thought I'd try here first.
     

    Superuser187

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    Vtc6 is a good battery used if u want to have longer battery life cause it's large capacity which is 3000mah meaning last long and this battery is rated at 15a or 20a (this is the cdr) if the battery it doesnt heat up above 80c temperature but probably won't ever heat up that much with normal use.....
    anyways and what we do when we know a battery ampere is we multiply it by 3 to find the wattage it can be used sooooo 15a x 3 = 45 and that means u can use this battery up to 45watts with your mod not just safely but in order to not use it at it's limits and extent the battery longevity....u can use up to 60watts also if u want I hope u don't let your vape device in the sun heating up tho hahaha

    I guess u changed coil and still the ohms jump? Cause sometimes the coils do that stuff...
    If it's not the coil I guess it's mods problem...
    I wonder if u already have 2 batteries to try use another battery or how long do you have that battery...
    I am not sure if battery can cause ohm to jump on a mod but just saying why not try it...
     
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    seb74820

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    Jun 23, 2021
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    Vtc6 is a good battery used if u want to have longer battery life cause it's large capacity which is 3000mah meaning last long and this battery is rated at 15a or 20a (this is the cdr) if the battery it doesnt heat up above 80c temperature but probably won't ever heat up that much with normal use.....
    anyways and what we do when we know a battery ampere is we multiply it by 3 to find the wattage it can be used sooooo 15a x 3 = 45 and that means u can use this battery up to 45watts with your mod not just safely but in order to not use it at it's limits and extent the battery longevity....u can use up to 60watts also if u want I hope u don't let your vape device in the sun heating up tho hahaha

    I guess u changed coil and still the ohms jump? Cause sometimes the coils do that stuff...
    If it's not the coil I guess it's mods problem...
    I wonder if u already have 2 batteries to try use another battery or how long do you have that battery...
    I am not sure if battery can cause ohm to jump on a mod but just saying why not try it...
    Vtc6 is a good battery used if u want to have longer battery life cause it's large capacity which is 3000mah meaning last long and this battery is rated at 15a or 20a (this is the cdr) if the battery it doesnt heat up above 80c temperature but probably won't ever heat up that much with normal use.....
    anyways and what we do when we know a battery ampere is we multiply it by 3 to find the wattage it can be used sooooo 15a x 3 = 45 and that means u can use this battery up to 45watts with your mod not just safely but in order to not use it at it's limits and extent the battery longevity....u can use up to 60watts also if u want I hope u don't let your vape device in the sun heating up tho hahaha

    I guess u changed coil and still the ohms jump? Cause sometimes the coils do that stuff...
    If it's not the coil I guess it's mods problem...
    I wonder if u already have 2 batteries to try use another battery or how long do you have that battery...
    I am not sure if battery can cause ohm to jump on a mod but just saying why not try it...
    Yeah I changed the coils a couple times after it started jumping and it still did it after. I've got several batteries. They're all maybe 2 months old and look to still be in good shape. Thank you for all the info!
     

    Superuser187

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    Yeah I changed the coils a couple times after it started jumping and it still did it after. I've got several batteries. They're all maybe 2 months old and look to still be in good shape. Thank you for all the info!

    So it seems u did everything u could so just keep vaping it cause that change in resistance is not the end of the world even tho it's a little odd cause usually an accepted change in resistance is like from 0.50 ohm to 0.52ohm or something like that and dont happend on every pressing of the fire button but more like as the days go by it may change....
    If the mod is on warranty u could try replace it ofc but if not I guess don't stress about it and vape it at least it works and there is no danger :)
     
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    Superuser187

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    Hey I just saw on the website the coils for your atomizer use stainless steel material....it's not very common in those type of coils but what stainless steel material does is that it changes resistance a lot while it heats up.....so could it be that u just haven't noticed before and it's normal operation
    What are the odds that u havent seen it before and it was always this way? :)
     
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    Hawise

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    Yes I'm confused about all of it! Haha! My ex used to do all of this for me so I've never had to learn. It's a VTC6.

    VTC6 can be a great battery, depending on your needs (and assuming it's not counterfeit - where do you get your batteries? Some vendors are more reliable than others.)

    According to Mooch's chart, the VTC6 has a CDR of 15 amps (or a temperature-limited CDR of 20 amps, but as we have no accurate way of measuring the temperature throughout a cell while vaping, we have to use the non-temp limited CDR).

    To find the maximum wattage this cell can be used at, the equation is:

    CDR x Number of batteries in the mod x 3

    So, if your mod is a single battery mod, that's 15 x 1 x 3 = 45 watts. If it has two batteries, it's 90 watts. Note that if you're spending much time vaping near the limit, you'll probably get better performance out of a cell with a higher CDR.
     
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