Does my TC setup stress the battery?

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JokkeD86

Full Member
Feb 27, 2016
27
12
Hi,

When I hit the button on my VTC mini, my ohm reading jumps from/between 0.55 and 0.66.

The mode is set to Temp 316.
I use the Crown tank with Dual 0.5 coil. I have locked the ohm.

I own 3 of theese tanks and all of them are doing this.

I actually dont care, because the vape is just great! :) BUT my friend is now telling me that the ohm jumping is stressing the battery making the vape unsafe?

Is that right? I belive that TC already pulls different amount from battery...
 

JokkeD86

Full Member
Feb 27, 2016
27
12
Hi,

When I hit the button on my VTC mini, my ohm reading jumps from/between 0.55 and 0.66.

The mode is set to Temp 316.
I use the Crown tank with Dual 0.5 coil. I have locked the ohm.

I own 3 of theese tanks and all of them are doing this.

I actually dont care, because the vape is just great! :) BUT my friend is now telling me that the ohm jumping is stressing the battery making the vape unsafe?

Is that right? I belive that TC already pulls different amount from battery...

Oh i forgot... I use the battery LG HG2.. Is that OK for TC?
 

GBalkam

Super Member
Apr 29, 2016
682
646
Hi,

When I hit the button on my VTC mini, my ohm reading jumps from/between 0.55 and 0.66.

The mode is set to Temp 316.
I use the Crown tank with Dual 0.5 coil. I have locked the ohm.

I own 3 of theese tanks and all of them are doing this.

I actually dont care, because the vape is just great! :) BUT my friend is now telling me that the ohm jumping is stressing the battery making the vape unsafe?

Is that right? I belive that TC already pulls different amount from battery...
resistance fluctuation between cold wire and hot wire is normal. Pretty much unavoidable really. Just plain physics.

Your friend is a twit and should not be talking about ohms law. That mod is regulated, and unless there is a massive failure, the software will not allow you to pull more watts or amps than the battery can handle.
see
Ohm's law
Not only that, but regulated mods have a low resistance limit. If your coil is lower than a certain resistance, the mod will not fire.
In other words, your TC will never exceed your mods safe operating limit. Just be sure you never use cheap batteries and only buy high drain batteries with an internal resistance suitable for vaping. See Mooch's blog for a nice list of batteries.
 

JokkeD86

Full Member
Feb 27, 2016
27
12
As long as the resistance is locked (at room temperature) it is fine. The resistance jumping while firing is just a real-time read of the ohms because the evic vtc mini has dynamic resistance (real-time reading of resistance)

Thank you sir!! Now I Can vape again :) What about the battery. Am I good to go? I should say im charging through VTC with an Android charger with output of 1500 mA.
 

ImThatGuy

Ultra Member
ECF Veteran
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Sep 1, 2012
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You're charging through the usb port on the mod? If so, I wouldn't use the android wall adapter that has an output of 1500mA, it may just be too much. I don't remember the specs on the usb port of the evic, but I highly would suggest using an external charger (EfestLUC, Nitecore, Xtar, etc.) and just use the usb charging option in times of emergency.
 

GBalkam

Super Member
Apr 29, 2016
682
646
Thank you sir!! Now I Can vape again :) What about the battery. Am I good to go? I should say im charging through VTC with an Android charger with output of 1500 mA.
Same as mine.. 1500ma for 2 batteries, 750 for 4. I am using the exact same batteries, and vape all day at 200w with no problem. Mind you I do have to swap my batteries when they get low, but that's normal.
 

GBalkam

Super Member
Apr 29, 2016
682
646
You're charging through the usb port on the mod? If so, I wouldn't use the android wall adapter that has an output of 1500mA, it may just be too much. I don't remember the specs on the usb port of the evic, but I highly would suggest using an external charger (EfestLUC, Nitecore, Xtar, etc.) and just use the usb charging option in times of emergency.
His batteries are fine, they will handle that charge easily. I use the same ones. The are removable not fixed. Recommended by the vendor at the vape shop who is my go to guy when brains need picking. They are actually better than I technically need. lol but planned ahead for when i get a 300w mod. As long as the charging current does not exceed what the battery is rated for, no problem.
 

JokkeD86

Full Member
Feb 27, 2016
27
12
You're charging through the usb port on the mod? If so, I wouldn't use the android wall adapter that has an output of 1500mA, it may just be too much. I don't remember the specs on the usb port of the evic, but I highly would suggest using an external charger (EfestLUC, Nitecore, Xtar, etc.) and just use the usb charging option in times of emergency.

Thats what i ment. Thanks again. I will buy the charger...

I just read in another forum that where a guy asking the same questions as i did. And the users answered bad pin connection etc. - While you folks here says its fine.

Dont get me wrong here. I am greatfull for the replys but its confussing me :)
 

ImThatGuy

Ultra Member
ECF Veteran
Verified Member
Sep 1, 2012
2,403
1,983
California
Yes his batteries are fine, but using a wall adapter that has an output of 1.5A on the evic usb port to charge his batteries is very questionable. Because someone else recorded, not on this forum, the evic input is capped at 0.85A. So, the Android charger is too much for the evic. But...someone also has mentioned that the evic usb port will only take what is needed.

Do you want to risk ruining a mod?
 

sofarsogood

Vaping Master
ECF Veteran
Oct 12, 2014
5,553
14,168
Hi,

When I hit the button on my VTC mini, my ohm reading jumps from/between 0.55 and 0.66.

The mode is set to Temp 316.
I use the Crown tank with Dual 0.5 coil. I have locked the ohm.

I own 3 of theese tanks and all of them are doing this.

I actually dont care, because the vape is just great! :) BUT my friend is now telling me that the ohm jumping is stressing the battery making the vape unsafe?

Is that right? I belive that TC already pulls different amount from battery...
What max watts are you using?
 

GBalkam

Super Member
Apr 29, 2016
682
646
His batteries are fine, they will handle that charge easily. I use the same ones. The are removable not fixed. Recommended by the vendor at the vape shop who is my go to guy when brains need picking. They are actually better than I technically need. lol but planned ahead for when i get a 300w mod.
His batteries are fine, they will handle that charge easily. I use the same ones. The are removable not fixed. Recommended by the vendor at the vape shop who is my go to guy when brains need picking. They are actually better than I technically need. lol but planned ahead for when i get a 300w mod.
Yes his batteries are fine, but using a wall adapter that has an output of 1.5A on the evic usb port to charge his batteries is very questionable. Because someone else recorded, not on this forum, the evic input is capped at 0.85A. So, the Android charger is too much for the evic. But...someone also has mentioned that the evic usb port will only take what is needed.

Do you want to risk ruining a mod?

first time I ever heard of a charger running on amps. Most run on voltages. And USB connectors are self regulating, which is why you can charge cell phones, i pads, cameras, ect ect ect off the same usb port. The USB is connected to the battery terminals, not the IC board. Otherwise, your device would have to be ON to charge

At least that is how it was in my istick.
 

GBalkam

Super Member
Apr 29, 2016
682
646
You're charging through the usb port on the mod? If so, I wouldn't use the android wall adapter that has an output of 1500mA, it may just be too much. I don't remember the specs on the usb port of the evic, but I highly would suggest using an external charger (EfestLUC, Nitecore, Xtar, etc.) and just use the usb charging option in times of emergency.
You do know, that 1 ma is 1/1000th of an amp right? So 15mA = 15/1000ths of an amp.
 

sofarsogood

Vaping Master
ECF Veteran
Oct 12, 2014
5,553
14,168
That's the number you need to figure out if the battery you're using is right. It's best to be sure the maximum amps will be well below the amp rating of the battery. As the battery discharges voltage declines so the amps needed to supply the watts you are calling for increases. Watt's law is the tool for determining this. Volts X Amps = Watts or Watts / Volts = Amps . If the low voltage cut off programed into the vtc mini is 3.3 and you are allowing 50 watts then 50 watts / 3.3 volts = 15 amps. The HG2 battery has an amp rating of 20 so there is some safety margin. I use the same battery but max watts is 30 so 30 watts / 3.3 volts = 9 amps. My safety margin is larger because watts are lower.

I believe everybody who is choosing batteries for their mods should be able to do this from memory and understand what it means.
 
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