I decided I want to buy a new regulated skwonker. I am used to a two battery mod but this mod is a single cell. I plan on using the skwonker between 65-75 watts. Should I invest in 3 LG HB6 batteries since they are 30A but only 1500mah or can I get away with my Samsung 25R that is 25A? If it's better to go with the 3 HB6 batteries I'd definitely do that.
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what resistance is your typical build? i have both cells but usually reserve the hb6 for mech subohm builds because thety are only 1500mah
at 75 watts you are pulling 20amps from the cell. According to mooch they are a 20a cell so the hb6 would be a better choice from a safety aspect. or invest in higher amp cells with a higher mah like a vtc5a
What is the most trusted online vendor for buying these batteries say I want the online price and save money from buying from a trusted vape shop?
The Samsung 25R is 20A.
On a regulated device the resistance of the coil is irrelevant. Regulated mods separate the input and output voltage, in other words they separate the battery from the atomizer. The only relevant value is the wattage with a regulated mod, and the remaining voltage in the battery.
The wattage is generated by the mod by multiplying the volts by the amps. As the voltage falls, the mod will increase the amp draw to maintain the selected wattage from the remaining voltage level. You need to know the amp draw at full charge, and when the battery is discharged as this value will be the highest. Most regulated mods are about 90% efficient, so you will also need to factor this loss into your calculations as it will marginally increase the amount of amperage pulled from the battery.
To find the amp draw use I=P/V (-10%)
Eg.
50w divided by 4.2v equals 11.9 divided by 0.9 = 13.22 amps
50w divided by 3.2v equals 15.6 divided by 0.9 = 17.33 amps
Here's a function within Steam Engine that calculates battery draw for regulated mods.
Mod range
If you use a good quality 20 amp CDR battery like the Samsung 30Q or the LG HG2 then you are good for 60 watts per battery. If using a 2-battery regulated mod, your good for 120 watts as you have two batteries. If you are using a 3-battery mod, you're good for 180.
If you use a single 30 amp CDR battery like the LG HB6 you are good up to 90 watts; with a pair of 30 amp CDR batteries you could safely do 180 watts assuming the mod cuts off when the batteries reach 3.4 volts.
60W or higher:
LG18650HB6 1500mah 30 amp CDR
LG18650HB2 1500mAh 30 amp CDR
LG18650HB4 1500mAh 30 amp CDR
30W-60W:
LG 18650HG2 3000mah 20 amp CDR
LG 18650HE2 2500 mah 20 amp CDR
Samsung 18650 30Q, 3000 mah 20 amp CDR
Samsung 18650-25R, 2500 mah 20 amp CDR
Sony 18659VTC6 3000mAh 20A CDR
Sony 18650VTC5A, 2500 mah 25 amp CDR
Sony 18650VTC5, 2600 mah 20 amp CDR
Sony 18650VTC4, 2100 mah 23 amp CDR
AW 18650 3000 mah 20 amp CDR
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www.liionwholesale.com
www.imrbatteries.com
www.illumn.com
www.rtdvapor.com
www.batterybro.com
www.orbtronic.com
www.nkon.nl
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So it's always better calculate the wattage or the amps based on the voltage of a battery that is empty (discharged), meaning that's what I should go by (3.2V) to give breathing room?
Yes, when using a regulated power device at the low voltage cutoff amp demand from the battery will be highest.
Some are as low as 2.8v to as high as 3.5v, I use 3v if I don't know the exact low v cutoff.
Power device inefficiancy should also be factored as it increases amp load slightly.
Some are as low as 2.8v to as high as 3.5v, I use 3v if I don't know the exact low v cutoff.
Power device inefficiancy should also be factored as it increases amp load slightly.
Once you have the maximum wattage for each battery then you can use the following formula to determine the maximum amount of current that can be drawn from each battery...
Max Amps Per Battery = Max Wattage Per Battery / Minimum Voltage Per Battery
I should add that to get as close as possible to calculating the max current being pulled from your batteries you should add an additional 10%. This will account for the inefficiency of the regulator. For example, if your device draws 23.4A then add 2.34A for a total of 25.74A. Not a big difference, but it's there. That changes the equation to...
Max Amps Per Battery = (Max Wattage Per Battery / Minimum Voltage Per Battery) / 0.9
If you know you will not be exceeding a particular wattage that is less than the maximum then you can use that wattage in the equation instead. This often means you're able to use a higher capacity battery like the HG2 or 30Q instead of a high current rated, but lower capacity, battery like the VTC4 or HB6. It's worth doing the math to find out.
Max Amps Per Battery = Max Wattage Per Battery / Minimum Voltage Per Battery
I should add that to get as close as possible to calculating the max current being pulled from your batteries you should add an additional 10%. This will account for the inefficiency of the regulator. For example, if your device draws 23.4A then add 2.34A for a total of 25.74A. Not a big difference, but it's there. That changes the equation to...
Max Amps Per Battery = (Max Wattage Per Battery / Minimum Voltage Per Battery) / 0.9
If you know you will not be exceeding a particular wattage that is less than the maximum then you can use that wattage in the equation instead. This often means you're able to use a higher capacity battery like the HG2 or 30Q instead of a high current rated, but lower capacity, battery like the VTC4 or HB6. It's worth doing the math to find out.
It looks like I do need a true 30A battery. I had in mind the HB6 and buy 3 because it's 1500mah. But between the HB6, HB2 & HB4 what is the best choice?
- Which is the best performer: HB2 vs HB4 vs HB6?
- LG HB Series Batteries -- Which is the best performer? (Round Two)
Probably doesn't matter. In fact, Mooch concluded that they might be the very same cell, just manufactured for different customers so they have different wraps and model numbers.
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This is great. I just bookmarked this thread because of the great amount necessary information that is here
Get the LG as you're exceeding the cdr otherwise. Up to 75w the Sony vtc5a (not vtc5!) would be a better option. It has a cdr of 25 amps. The resistance of the coil doesn't affect the amp draw on a regulated device. In any case, if you want to vape at that high a wattage I'd suggest a dual-battery mod. Your battery life will be severely limited otherwise.
Sent from my M7_PLUS using Tapatalk
At 75w the amp draw is more like 25 amps, depending on the low voltage cutoff and chip efficiency.
Sent from my M7_PLUS using Tapatalk
It's hard to separate myself from my 22G Kanthal. But .18 is with 6 wraps with a 3mm inside diameter. I can make it a 8 wrap and it will be more like a .25 ohm build.
Try some other types and gauges.
I love pizza, but not for every meal, every day.
Cheers
I
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