In Stock genuine high discharge rate rechargeable cylindrical 18650 Li-Ion batteries Sony, LG, Samsung from PowerStream; authentic 18650HE2, US18650VCT4, US18650VCT5, VTC4, VTC5, INR18650-25R with battery data sheet and discharge curves
I have no background in chemistry or advanced electronics, so I have some questions about these charts.
Disclamer: I'm not suggesting we go off the pulse rating when picking batteries as it is not a safe practice. It is possible for your mod to malfunction and continuously fire which would be LESS of a concern when operating within the continous discharge ratings (though over discharge could still be a concern as well as heat build up from your atty causing hot batteries) and also Pulse durations are different for every manufacture.
my observations:
On graphs showing continues discharge curves temperature seems to have an effect on aH rating and when the voltage makes its sharp downward curve.
For example, It seems like a lower amp draw would be a smooth curve, or extend past the others, but the graph shows the .5amp draw stays higher longer but drops off short of every other amp draw (except for the 40 amp draw on a VTC5).
All this is really moot, since the graphs show sharp drop off below 3.5v and I usually swap batteries between 3.5-3.7v.
My question was is it the temperature that causes a smoother curve? and if so, is this applicable for vaping? I mean, we don't actually "Continuously" discharge the batteries - flipping them on for extended periods of time, allowing the heat to build up. We follow more of a "Pulse" curve I think, pressing the button for 2-15 seconds (depending on airflow, hit type, and potentially lung copacity) then having a short rest period before hitting the button again. Unless a chain vaper is being observed, there are generally long breaks between vape sessions (I'd say 5-15 pulls per vape session). Of course as an extra measure of safety we should (again) not use the pulse rating on batteries, as the duration of the pulse seems to very between battery manufactures (I read LG HE2s pulse rating is based on 90second pulses, which is why efest is comfortable rating them as 35amp batteries).
I've seen kidney punchers battery tests which does a .2ohm coil with 2sec on 60sec off or something of that nature, but I don't think that accurately illustrates how we (most of "us" vapers anyway) use batteries. Granted everyones usage is different, it seems like several pulses with longer rest periods every so often would be a more accurate measurement.. I'm sure on a .2 or lower you could chain vape the battery dead that way, but you've got too much time on your hands if thats how you discharge with a >.8ohm coil
I'm sure those vaping at or below .2 ohms is the sect most interested in this data, but I was wondering which batter performs better/longer with a 15-20amp draw as thats more in lines with what I run with a dual coil, or 8-15amp with a single coil.
If anyone has any thoughts, corrections, or more information on any of this I greatly appreciate your post
Thanks! Hectic.
I have no background in chemistry or advanced electronics, so I have some questions about these charts.
Disclamer: I'm not suggesting we go off the pulse rating when picking batteries as it is not a safe practice. It is possible for your mod to malfunction and continuously fire which would be LESS of a concern when operating within the continous discharge ratings (though over discharge could still be a concern as well as heat build up from your atty causing hot batteries) and also Pulse durations are different for every manufacture.
my observations:
On graphs showing continues discharge curves temperature seems to have an effect on aH rating and when the voltage makes its sharp downward curve.
For example, It seems like a lower amp draw would be a smooth curve, or extend past the others, but the graph shows the .5amp draw stays higher longer but drops off short of every other amp draw (except for the 40 amp draw on a VTC5).
All this is really moot, since the graphs show sharp drop off below 3.5v and I usually swap batteries between 3.5-3.7v.
My question was is it the temperature that causes a smoother curve? and if so, is this applicable for vaping? I mean, we don't actually "Continuously" discharge the batteries - flipping them on for extended periods of time, allowing the heat to build up. We follow more of a "Pulse" curve I think, pressing the button for 2-15 seconds (depending on airflow, hit type, and potentially lung copacity) then having a short rest period before hitting the button again. Unless a chain vaper is being observed, there are generally long breaks between vape sessions (I'd say 5-15 pulls per vape session). Of course as an extra measure of safety we should (again) not use the pulse rating on batteries, as the duration of the pulse seems to very between battery manufactures (I read LG HE2s pulse rating is based on 90second pulses, which is why efest is comfortable rating them as 35amp batteries).
I've seen kidney punchers battery tests which does a .2ohm coil with 2sec on 60sec off or something of that nature, but I don't think that accurately illustrates how we (most of "us" vapers anyway) use batteries. Granted everyones usage is different, it seems like several pulses with longer rest periods every so often would be a more accurate measurement.. I'm sure on a .2 or lower you could chain vape the battery dead that way, but you've got too much time on your hands if thats how you discharge with a >.8ohm coil
I'm sure those vaping at or below .2 ohms is the sect most interested in this data, but I was wondering which batter performs better/longer with a 15-20amp draw as thats more in lines with what I run with a dual coil, or 8-15amp with a single coil.If anyone has any thoughts, corrections, or more information on any of this I greatly appreciate your post
Thanks! Hectic.
