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Excessive heat would be a clue somthin' is wrong.
What battery are you using?
How old is it?
Do you know it is a legit battery?
Do you use a quality charger?
Is the battery usually rested between cycles?
Cheers.
What battery are you using?
How old is it?
Do you know it is a legit battery?
Do you use a quality charger?
Is the battery usually rested between cycles?
Cheers.
Hello and welcome to the forum @Race. Glad to have you here!
What battery are you using (brand & mAh)?
When using a regulated mod the resistance of the coil doesn't come into play as far as safety. It's the max wattage you vape at that counts.
Given your heatvape invader mini goes up to 50 watts, any cell that is rated 20A CDR will work as long as it is not counterfeit .
What battery are you using (brand & mAh)?
When using a regulated mod the resistance of the coil doesn't come into play as far as safety. It's the max wattage you vape at that counts.
Given your heatvape invader mini goes up to 50 watts, any cell that is rated 20A CDR will work as long as it is not counterfeit .
You need to educate yourself on batteries and resistance. Whether your build is good or not isn't the main issue but you not knowing if your build is good or not is. Asking after the fact isn't a good thing.
Like I said above, when using a regulated mod the resistance (i.e. the ohm/Ω) of the coil doesn't come into play as far as safety. It's the max wattage you vape at that counts.
READ this => Calculating Battery Current Draw for a Regulated Mod
Here are bench test results on the Samsung 25r's
So with all of the above information, you should be able to tell us (and know yourself) if you are safe to vape at 50 watts (that's the highest your mod will go) with your battery.
That sounds like 4.47 V at 50W, that's only 11.18amps, you should be fine. Learn the math though, it's worth it.
I didn't see this when I posted my question -- but unfortunately I still don't understand it - numbers tend to get mixed up in my brain and it's really difficult for me to understand (ADHD and number dyslexia - in otherwords, I can't do math at all - it makes no sense and it's very frustrating). This is the main reason why I didn't WANT a subOhm tank - I should have left it alone....
I'm still very confused and I feel like .... for getting a device I have no business having, but I have it now so I might as well learn how to calculate batteries - but it's confusing me greatly.
I'm still very confused and I feel like .... for getting a device I have no business having, but I have it now so I might as well learn how to calculate batteries - but it's confusing me greatly.
It is advised to know the number breakdown, but
1.if you Know you have one of the best authentic batteries that vapers use..
2. You use a quality charger.
3. You inspect them regularly for wear ie. scorches, tears, bulges etc.
4. It is used in a regulated device with built in safety protections.
5. Do not abuse them ie. leave in hot car or freezing temps or throw 'em around.
6. Are mindful they do not get excessively hot during use or while charging.
7. Rest them between charge and use cycles.
I think you will be fine.
(think i remembered everything)
Cheers.
Educate myself with what? I've looked at many sites and posts and i havent seen very much stating whether or not its safe
A lot can be learned from Mooch and Baditude, read their blogs.
Lots of homework there. Cheers.
For battery safety,
First and foremost make sure you purchase those with a legit stated CDR. The big 3s are tested and true to their stated CDR:
- Samsung
- Sony
- LG
Then, determine whether you're using a regulated or unregulated/mechanical device.
- If regulated, resistance does NOT matter, its the VW/VV setting you have on the device that matters. LAZY MANS RULE OF THUMB: Don't surpass 60W per battery assuming a 20A battery
If you want the actual math going into regulated device then understand Watts law.
Amperage required = Wattage output / Voltage of battery
A = W / V
A is the CDR required to safely fire at your desired W
W is the power lvl you have set on your mod usually in Watts
V of the battery ranges from 4.2V on a full charge to about 3.2V for a safe soft cutoff
So lets assume you want to vape at 60W on a 20A battery and the battery's current charge is close to the soft cutoff of 3.2V
A = 60W / 3.2V = 18.75A
However, you have to also factor in that mods are NOT 100% efficient. Assuming your mod is at least 90% efficient...
18.75A / 0.90 = 20.8333A
This is over the limit of 20A CDR on your battery by about 0.83333A. Thus the lazy man's rule...don't surpass 60W per battery if you're using 20A batteries.
Amperage required = Wattage output / Voltage of battery
A = W / V
A is the CDR required to safely fire at your desired W
W is the power lvl you have set on your mod usually in Watts
V of the battery ranges from 4.2V on a full charge to about 3.2V for a safe soft cutoff
So lets assume you want to vape at 60W on a 20A battery and the battery's current charge is close to the soft cutoff of 3.2V
A = 60W / 3.2V = 18.75A
However, you have to also factor in that mods are NOT 100% efficient. Assuming your mod is at least 90% efficient...
18.75A / 0.90 = 20.8333A
This is over the limit of 20A CDR on your battery by about 0.83333A. Thus the lazy man's rule...don't surpass 60W per battery if you're using 20A batteries.
- If your mod is an unregulated / mechanical device, then you need to understand ohms law where the resistance of your build determines the wattage / power going into your coils and the amperage drawn from your battery:
Amerpage required = Voltage of battery / Resistance of coils in ohms
A = V / R
Unreg / Mech mods require constant monitoring of 3 things (since you don't have a chip and screen giving you some of these information in real time).
1. Your resistance. IE: your build
2. Your battery. IE: remaining charge in volts, V
3. The well being of the mod itself
Again the general rule is simply NOT to build too low. For me, personally, I feel safe around 0.4~0.6ohms. Lets see why.
At a full charge, you're battery (regardless of its mah, amp, etc) will be at 4.2V. Lets play around with the A required with a few different builds: 0.1, 0.15, 0.2, 0.25, 0.3ohms
Amperage required = Voltage / Resistance
A = V / R
A = 4.2 / 0.1 = 42amps
A = 4.2 / 0.15 = 28amps
A = 4.2 / 0.2 = 21amps
A = 4.2 / 0.25 = 16.8amps
A = 4.2 / 0.3 = 14amps
So here we see that if you're using a battery with a CDR of 20A, on paper, you should never build lower than 0.2~0.25ohms. Personally, I like to play it safe, so I tend to build higher than 0.4ohms (requiring a CDR of at most, 10.5A).
For sh*ts and giggles lets figure out how much power is going into your coils assuming the same scenario stated above and your battery is at full charge, 4.2V
Wattage lvl = Amps (from above) x Volts (from above)
W = A x V
W = 42 x 4.2 = 176.4W
W = 28 x 4.2 = 117.6W
W = 21 x 4.2 = 88.2W
W = 16.8 x 4.2 = 70.56W
W = 14 x 4.2 = 58.8W
A = V / R
Unreg / Mech mods require constant monitoring of 3 things (since you don't have a chip and screen giving you some of these information in real time).
1. Your resistance. IE: your build
2. Your battery. IE: remaining charge in volts, V
3. The well being of the mod itself
Again the general rule is simply NOT to build too low. For me, personally, I feel safe around 0.4~0.6ohms. Lets see why.
At a full charge, you're battery (regardless of its mah, amp, etc) will be at 4.2V. Lets play around with the A required with a few different builds: 0.1, 0.15, 0.2, 0.25, 0.3ohms
Amperage required = Voltage / Resistance
A = V / R
A = 4.2 / 0.1 = 42amps
A = 4.2 / 0.15 = 28amps
A = 4.2 / 0.2 = 21amps
A = 4.2 / 0.25 = 16.8amps
A = 4.2 / 0.3 = 14amps
So here we see that if you're using a battery with a CDR of 20A, on paper, you should never build lower than 0.2~0.25ohms. Personally, I like to play it safe, so I tend to build higher than 0.4ohms (requiring a CDR of at most, 10.5A).
For sh*ts and giggles lets figure out how much power is going into your coils assuming the same scenario stated above and your battery is at full charge, 4.2V
Wattage lvl = Amps (from above) x Volts (from above)
W = A x V
W = 42 x 4.2 = 176.4W
W = 28 x 4.2 = 117.6W
W = 21 x 4.2 = 88.2W
W = 16.8 x 4.2 = 70.56W
W = 14 x 4.2 = 58.8W
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