Safety question

[Way2Gone]

Ok so the question I have about safety is concerning my IStick 100 Watt TC and I am running an Aspire Atlantis V1 tank with .3 OHM coils. The batterys I am using are 2 LG HG2's 3000 MAH
in the IStick 100 Watt TC. Running at 75 Watts right now is saying on Ohms Law Calculator.com that I am pushing 15.6 amps and 4.8 Volts at 75 Watts.

Now I am cutting it a little close because if I bump it up to 100 Watts the amps are reading out about 18 amps and 5.6 Volts. I know the batterys are supposeably 20 amps but I over heard "Mike Vapes" (The YouTube Reviewer) on a livestream today, say, that those batterys are really only about 18 amps on the limit.. I don't know where he got this information at, but it kind of scares me to try 100 watts because I am dead on 18 amps basically.

Should I be of worried or anything or any like tips to help me stay safe? I was even going to do my upgrade on my IStick that takes the IStick up to 120 Watts with the firmware. But I don't know if these batterys are quite the right choice at low ohms and high watts???

I could really use your knowledge I am still quite new to "Low Ohm" vaping at "Higher Watts".

 

[rice721]

With regulated mods, the mod itself will usually produce some error message or not let you fire at all before it lets your battery vent and eventually explode in your face...I wouldn't worry too much about it.

 

[Two_Bears]

With regulated mods, the mod itself will usually produce some error message or not let you fire at all before it lets your battery vent and eventually explode in your face...I wouldn't worry too much about it.

Regulated mods are much safer than unregulated mods.

The HG2 batteries. I used them and the samsung 25 rs all the time in mu eVic vtc before getting tgr mini volt i could drop in almost any pocket for portability. I still use thd eVic at home

I'm pretty sure tge hg2 batteries are 20 amp.

 

[Susan~S]

Just to clear things up. When using a regulated mod, there are two different amps.

• The amps your mods circuit board sees (what you are describing).
• The amps being drawn from the battery.

The mods circuit board will protect itself by throttling down the power if you attempt to draw too many amps (as determined by the board, not the battery) or refuse to fire. I don't know what the board is rated at.

However, the amps being drawn by the battery are calculated differently and are independent of the resistance of your coil.

• The mod itself has no idea if the battery is being stressed too hard or not. And a battery being stressed too hard will have a shortened life and, if stressed hard enough, can vent or worse.
• You must still select a battery that can handle the current the mod draws without overheating.

Calculating Battery Current Draw for a Regulated Mod
LG INR18650-HG2 20A 3000mAh Bench Retest Results...a great 20A battery!

 

[gofishtx]

I use the HG2 in all of my high Wattage devices with no problem. I have only gone up to 110 Watts at the most though. I typically keep it between 70 and 90. The HG2 are 20 amps peaking at 35 amps so no worries especially on a regulated device.

 

[edyle]

Ok so the question I have about safety is concerning my IStick 100 Watt TC and I am running an Aspire Atlantis V1 Tank with .3 OHM coils. The batterys I am using are 2 LG HG2's 3000 MAH
in the IStick 100 Watt TC. Running at 75 Watts right now is saying on Ohms Law Calculator.com that I am pushing 15.6 amps and 4.8 Volts at 75 Watts.

Now I am cutting it a little close because if I bump it up to 100 Watts the amps are reading out about 18 amps and 5.6 Volts. I know the batterys are supposeably 20 amps but I over heard "Mike Vapes" (The YouTube Reviewer) on a livestream today, say, that those batterys are really only about 18 amps on the limit.. I don't know where he got this information at, but it kind of scares me to try 100 watts because I am dead on 18 amps basically.

Should I be of worried or anything or any like tips to help me stay safe? I was even going to do my upgrade on my IStick that takes the IStick up to 120 Watts with the firmware. But I don't know if these batterys are quite the right choice at low ohms and high watts???

I could really use your knowledge I am still quite new to "Low Ohm" vaping at "Higher Watts".

your math is wrong because the amps from the battery is different from the amps and voltage in the coil.

Just look at watts instead.
Each battery can deliver 3 volts x 20 amps = 60 watts.
So long as you are below 60 watts, you are safe, even if one of the batteries isn't making proper contact (that mod is a parallel batt mod).
At the max of 100 watts, you are safe so long as both batteries are making proper contact.

 

[MMW]

There's a few ways to calculate this.

You're using a parallel dual box with two 20Amp batteries. In parallel I would add the total CDR of both batteries and multiply by your mods lowest cutoff voltage, since this is where the highest amps are drawn, to get total wattage. I will assume it's 3.2v.

40a×3.2=128w

Which is 64w per battery. With the 5% we will call it 121w or 60.5w per batt.


For series mods you will get the same answer taking the cutoff voltage 3.2 and multiplying by the number of batteries.

3.2x2 batteries is 6.4v

Then take the voltage and multiply it by the CDR rating of 20A

6.4vx20A=128w


Where you won't be exceeding 100w you can figure out your wattage used and amp draw for each battery.

100w mod ÷2 batteries is 50w.

50w÷3.2v cutoff= 15.625A per battery.

If you want to add 5% it's 16.4A per battery at 100w.


Sorry for the long post just to say "you're all good".

 

[DingerCPA]

+1 @MMW

Kinda "short" story is that PARALLEL batteries will split the current. SERIES batteries will double the voltage.

 

[Way2Gone]

There's a few ways to calculate this.

You're using a parallel dual box with two 20Amp batteries. In parallel I would add the total CDR of both batteries and multiply by your mods lowest cutoff voltage, since this is where the highest amps are drawn, to get total wattage. I will assume it's 3.2v.

40a×3.2=128w

Which is 64w per battery. With the 5% we will call it 121w or 60.5w per batt.


For series mods you will get the same answer taking the cutoff voltage 3.2 and multiplying by the number of batteries.

3.2x2 batteries is 6.4v

Then take the voltage and multiply it by the CDR rating of 20A

6.4vx20A=128w


Where you won't be exceeding 100w you can figure out your wattage used and amp draw for each battery.

100w mod ÷2 batteries is 50w.

50w÷3.2v cutoff= 15.625A per battery.

If you want to add 5% it's 16.4A per battery at 100w.


Sorry for the long post just to say "you're all good".

Ok so when you gave the leway of 5% I assume that is because the lowest possible voltage being possibly used on a low charge state battery being at 3.0 volts? Is that what you 5% leway means? Looking over the manual on the IStick, the "low voltage protection says" "When the voltage of cells is below 3.3V, the OLED screen will display "Lock". Charge the cells the unlock the device"

So going by the properties of the IStick itself my calculation for safety should be as follows:

40A X 3.3 = 132 Watts Of course that is only using this particular box.

 

[edyle]

Ok so when you gave the leway of 5% I assume that is because the lowest possible voltage being possibly used on a low charge state battery being at 3.0 volts? Is that what you 5% leway means? Looking over the manual on the IStick, the "low voltage protection says" "When the voltage of cells is below 3.3V, the OLED screen will display "Lock". Charge the cells the unlock the device"

So going by the properties of the IStick itself my calculation for safety should be as follows:

40A X 3.3 = 132 Watts Of course that is only using this particular box.

No the 5% is about efficiency. Not all the power from the battery gets used usefully; some is wasted as heat loss on the circuitboard.

 

[Way2Gone]

No the 5% is about efficiency. Not all the power from the battery gets used usefully; some is wasted as heat loss on the circuitboard.

thank you

 

[MMW]

A lot of folKS add 5% to amperage draw to account for the loss on the regulator. I don't personally because I'm never on the line in terms of stressing the batts. I usually pull 55w max on dual boxes and 35w on single battery mods.

 

[Way2Gone]

i am still a little confused. first time I have ever had to learn this stuff. alot going on in my head right now.

I have another question. What is the lowest voltage these batterys would even put out (not particularly in my box, just in general)?

Also, help me please configure numbers if I was using at 120 watts? Thanks. Trying to get some learning in today.

I still have to try to figure out my safety concerns via temp control as well, but not tanks right now that requires it. But in the future probably will have a tank with temp control or wire in an RTA.

 

[edyle]

i am still a little confused. first time I have ever had to learn this stuff. alot going on in my head right now.

I have another question. What is the lowest voltage these batterys would even put out (not particularly in my box, just in general)?

Also, help me please configure numbers if I was using at 120 watts? Thanks. Trying to get some learning in today.

I still have to try to figure out my safety concerns via temp control as well, but not tanks right now that requires it. But in the future probably will have a tank with temp control or wire in an RTA.

If the lithium battery goes down to about 3.2 volts, the regulated mod usually considers that the cutoff or discharged point.
In terms of the mod output voltage, in tc mode they go down pretty low because of the low resistances of most tc coils. often below 3 volts.

 

[Way2Gone]

If the lithium battery goes down to about 3.2 volts, the regulated mod usually considers that the cutoff or discharged point.
In terms of the mod output voltage, in tc mode they go down pretty low because of the low resistances of most tc coils. often below 3 volts.

but my mod supposeably shuts down if the batterys are at 3.3 volts or below, so how would tc be any different?
Also, if I was in bypass mode that is basically like a mechanical mod so what precautionarys should I look into when running in that mode.

40 x 3.3 = 132. with the 5% efficiency what would that be on safety terms?
was trying to see if 120 watts which is my max for the IStick would even give me a problem but I don't think it would.
Thanks if you can help me.

 

[Susan~S]

Also, help me please configure numbers if I was using at 120 watts? Thanks. Trying to get some learning in today.

I posted this link above. Here is how you calculate it: Calculating Battery Current Draw for a Regulated Mod

 

[Way2Gone]

I posted this link above. Here is how you calculate it: Calculating Battery Current Draw for a Regulated Mod

You are correct, although, I am confused hence why I am asking him extra questions

I am running at 80 watts but don't know how to calculate the amps for this. Sorry for the confusion.

 

[edyle]

You are correct, although, I am confused hence why I am asking him extra questions

I am running at 80 watts but don't know how to calculate the amps for this. Sorry for the confusion.

You are probably confused from trying to deal with more than one thing at a time.

What amps is it that you think you want to calculate for running at 80 watts?

 

[MMW]

80w÷2batts.
40w÷3.3v= 12.12A per batt. Or 24.24 total amps.

 

[Way2Gone]

You are probably confused from trying to deal with more than one thing at a time.

What amps is it that you think you want to calculate for running at 80 watts?

I just want to know what amps I am running at when using my mod at 80 watts.