cant figure my c rating

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indigo_kidd

Full Member
Nov 18, 2013
13
3
mcallen tx
I recently bought a k100 and am using it with my pt2 mini. I enjoy it but like most vapers have become intrested in rbas. Looking to get a aga-t2 since it seems to be a good starting rba. My question is, my k100 came with a battery that has
icr 18650 2000mAh 3.7v and 13d. Im trying to figure out my amps so that i can know more or less the capabilities of my battery on an rba. But i need the c rating to figure the amps, therefore, is 13d the c rating? And if the battery output on my battery is 3.7v and the volt drop on the k100 is .2 , will the voltage remain constant, or will my battery drop after usuage. And what is the best way to test that usuing a multimeter (tests ect.)
Thanks ahead of time
 

Baditude

ECF Guru
ECF Veteran
Apr 8, 2012
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Ridgeway, Ohio
The C rating is used to find the continuous discharge rate of a battery in Amps. The only way to know what your battery's C rating is if the manufacturer or the vendor selling the battery lists it. Unfortunately, many do not. What does a battery's C rating mean?

Many of us ECF veterans have compiled a list of batteries with their "continuous discharge rate in Amps". Below is such a list:

Recommended IMR or hybrid "high drain" battery list

AW IMR
18650 2000mah 10Amp CDR
18650 1600mah 24A
18490 (1100mah) 16.5A
18350 ​(700mah) 6A

MNKE IMR
18650 1500mah ​20A

Panasonic ​or Orbtronic hybrid
CGR18650CH (IMR/hybrid) 2250mAh 10A
NCR18650PF (LiNiCOMnO2) INR/ICR/IMR Hybrid 2900mAh 10A
NCR18650PD (LiNiCoAl) 2900mAh 10A
Orbtronic 18650 SX22 (hybrid) 2000mAh 22A

Sanyo
UR18650EX 2000mAh 20A

Samsung hybrid (LiNiCoMnP)
INR18650-22P 2200mAh 10A
INR18650-20R 2000mah 22A

Sony hybrid
us18650v3 IMR 2250mAh 10A
us18650vct3 1600mAh 30A
us18650vtc4 2100 mAh 30A

EH IMR
18650 2000 mAh 16A
18650 1500 mAh 22A
18500 1100 mAh 8.8A
18350 800 mAh 6.4A

Efest IMR
18650 (IMR/hybrid) 2250mAh 10A
18650 2000mAh 10A
18650 1600mAh 30A
18490 1100mah 8.8A
18350 800mah 6.4A

Battery Basics for Mods: IMR or Protected?

Ohm's Law Calculator

After you measure your coil's resistance in ohms with your digital multimeter, use the Ohm's Law Calculator and type in the resistance in ohms and the battery voltage (4.2 volts) and then hit calculate. The number in the "current" box will be the Amps that coil will pull from the battery. This number can not be higher than the battery's Amps in continuous discharge rate. THIS IS CRITICAL TO YOUR SAFETY! Using a battery past its limit can cause the battery to go into thermal runaway.

_____________________________________________​

Since you are not able to identify either the manufacturer or the specifications of your battery, I must suggest that you should not use this battery. You don't know if it is a high drain IMR chemistry, a hybrid chemistry, or an ICR protected battery chemistry. It is an unidentifiable "mystery battery" and therefore not safe to use.

High quality, name brand, "high drain" IMR or hybrid batteries are the only batteries you should use for an RBA/RDA.

I recommend you read the following articles to get a head start on your research:

Cloud Chasing is Dangerous

Information Resources for Your First RBA

Mechanical Mod Proper Usage Guide

Deeper Understanding of Mod Batteries
 
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indigo_kidd

Full Member
Nov 18, 2013
13
3
mcallen tx
The C rating is used to find the continuous discharge rate of a battery in Amps. The only way to know what your battery's C rating is is if the manufacturer or the vendor selling the battery lists it. Unfortunately, many do not. What does a battery's C rating mean?

Many of us ECF veterans have compiled a list of batteries with their "continuous discharge rate in Amps". Below is such a list:

Recommended IMR or hybrid "high drain" battery list

AW IMR
18650 2000mah 10Amp CDR
18650 1600mah 24A
18490 (1100mah) 16.5A
18350 ​(700mah) 6A

MNKE IMR
18650 1500mah ​20A

Panasonic ​or Orbtronic hybrid
CGR18650CH (IMR/hybrid) 2250mAh 10A
NCR18650PF (LiNiCOMnO2) INR/ICR/IMR Hybrid 2900mAh 10A
NCR18650PD (LiNiCoAl) 2900mAh 10A
Orbtronic 18650 SX22 (hybrid) 2000mAh 22A

Sanyo
UR18650EX 2000mAh 20A

Samsung hybrid (LiNiCoMnP)
INR18650-22P 2200mAh 10A
INR18650-20R 2000mah 22A

Sony hybrid
us18650v3 IMR 2250mAh 10A
us18650vct3 1600mAh 30A
us18650vtc4 2100 mAh 30A

EH IMR
18650 2000 mAh 16A
18650 1500 mAh 22A
18500 1100 mAh 8.8A
18350 800 mAh 6.4A

Efest IMR
18650 (IMR/hybrid) 2250mAh 10A
18650 2000mAh 10A
18650 1600mAh 30A
18490 1100mah 8.8A
18350 800mah 6.4A"

Battery Basics for Mods: IMR or Protected?

Ohm's Law Calculator

After you measure your coil's resistance in ohms with your digital multimeter, use the Ohm's Law Calculator and type in the resistance in ohms and the battery voltage (4.2 volts) and then hit calculate. The number in the "current" box will be the Amps that coil will pull from the battery. This number can not be higher than the battery's Amps in continuous discharge rate. THIS IS CRITICAL TO YOUR SAFETY! Using a battery past its limit can cause the battery to go into thermal runaway.

_____________________________________________​

Since you are not able to identify either the manufacturer or the specifications of your battery, I must suggest that you should not use this battery. You don't know if it is a high drain IMR chemistry, a hybrid chemistry, or an ICR protected battery chemistry. It is an unidentifiable "mystery battery" and therefore not safe to use.

High quality, name brand, "high drain" IMR or hybrid batteries are the only batteries you should use for an RBA/RDA.

Thanks! Well since it.is.an ICR i assume its a protected battery. I do have a little magnet chip thing on tHe positive end, the guy at the vape.shop.said it would pprotect the battery. Do all batteries rate at 4.2v , or.juat the ones u listed? This battery says 3.7v . Ill probably buy a couple.high end batteries. Will one of those batteries with 30A rating still.work with something that doesnt require that many amps? I will probably start it single coils amd as i progress will start with dual.coils and .8ohm range coils.
I have an idea to run two series coils with twisted wire in parallel so that i can stay around 1-.8 ohm ( two parallel circuts with two coils im series on each, and splitting a wick on each side to have a "quad" coil). Will work up to that point tho, just wanna make sure if i order the 30A rating batteries they will work with 2 ohm ish coils through .8. Or should i.just order lower amp batteries for the higher resisance. Im assuming the resistance i a what draws out the amps and therefore a battery. With 30A capability will suffice for both high resistanc low. Im i correct? And what exactly is the little magnet thing that the guy at the vape shop threw on my battery?
 

Baditude

ECF Guru
ECF Veteran
Apr 8, 2012
30,394
73,076
71
Ridgeway, Ohio
All the batteries in the above list can be used for any application. Using a high amp battery when it is not required is overkill, and most of them have a smaller capacity in mAhs meaning they won't last as long in use as a higher mAh battery will. It's either one or the other: high amp ability or higher battery capacity; you can't have it both ways.

The disc with the magnet is some sort of fuse. A Vape Safe Fuse gives some short circuit protection. It goes on the negative end (bottom) of the battery. There two types: single use and a multiple use which will reset after tripping. Batteries : Vape Safe Mod Fuse 2

Vapesafe Fuse.jpg
 

Rickajho

ECF Guru
ECF Veteran
Verified Member
Apr 23, 2011
11,841
21,763
Boston MA
I recently bought a k100 and am using it with my pt2 mini. I enjoy it but like most vapers have become intrested in rbas. Looking to get a aga-t2 since it seems to be a good starting rba. My question is, my k100 came with a battery that has
icr 18650 2000mAh 3.7v and 13d. Im trying to figure out my amps so that i can know more or less the capabilities of my battery on an rba. But i need the c rating to figure the amps, therefore, is 13d the c rating? And if the battery output on my battery is 3.7v and the volt drop on the k100 is .2 , will the voltage remain constant, or will my battery drop after usuage. And what is the best way to test that usuing a multimeter (tests ect.)
Thanks ahead of time

Those have been researched. They are mystery batteries being packaged with Kamry kits, unknown manufacturer, unknown chemistry, unknown C value, unknown real capacity. The "13D" means nothing in context of capacity. It would be far better if they just weren't included with those mods at all.
 

Baditude

ECF Guru
ECF Veteran
Apr 8, 2012
30,394
73,076
71
Ridgeway, Ohio
Ok, ive had the fuse on the positive end -,- woops.
Where did the 4.2v come from. Mine says 3.7 and i looke for the us18650vtc4 and when i googled it, it said its 3.7v as well. Is the 4.2v at full charge and the 3.7v just the avg? And do u recomend using the fuse on that battery?
Fully charged, your battery will read 4.2 volts when taken from the charger. 3.7 volts is the nominal or average voltage of the battery.

A mechanical mod has no built-in circuitry like a regulated mod has. So yes, use whatever protection you can. IMR and hybrid batteries are safer chemistry batteries, but they are still batteries that can short circuit, fail, and vent. Using a safety fuse adds some short circuit protection.
 
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