Battery Question?

[lopenator]

Hey everyone

I just ordered a new battery it's the Sony US 18650 VTC5 High Drain

It says it's Max Discharge Current is 30A

Nominal Voltage is 3.7

Capacity is 2600 mAh

Ive been trying to figure out the C rating on this. How do I get this info. I've reading so many things how to figure out the C rating, only to get more confused. I just read there are different kind of C rating? I looked on the spread sheet on ECF with all the battery specs and this one isnt even on there, maybe because the battery is new?

I have a Nemesis clone coming in the mail this week and I wanna know everything I need to know, but I just keep getting confused.

 

[Baditude]

What's in a Battery's C Rating?

The C Rating stands for capacity. To break it down to its simplest terms, the C rating is the maximum safe continuous discharge rate of a battery.

If you already know the amp rating in continuous discharge rate, you don't need to know the C rating. The C rating is determined by the battery manufacturer.

The Sony US18650VTC5 2600mAh has a 30 amp continuous discharge rating.

Battery Basics for Mods: IMR or Protected ICR?

 

[lopenator]

I thought it had a 30 amp max discharge, not continuous.

So they're the same thing?

And that being said,the continuous discharge rate, or the max is the c rating?

So..This is good battery right?

This battery is IMR protected correct?

I read all those too. Everything on the page.. I'm just trying to put everything together. Ive learned a lot. So theres nothing on this battery I need to worry about right? I can hold the button down for a long time right? at say .3ohm and anything higher?

 

[Ryedan]

I thought it had a 30 amp max discharge, not continuous.

It can do 30A discharge continuously until it's empty without venting. There is a burst discharge rating also. For this battery I believe it's 60A. I believe that is for 5 seconds at a time, but there is more to that and it is not recommended that we vape in that range of battery current draw.

And that being said,the continuous discharge rate, or the max is the c rating?

'C' is the capacity of the battery. So a 1600 mAh battery has a '1C' rating of 1600 milliAmps (mA) or 1.6 amps. Discharge that battery at 1.6A for an hour and it will be empty. Discharge it at 1.6 * 2 = 3.2 amps for 30 minutes (0.5 hours or 2'C') and it will be empty.

So..This is good battery right?

It is very good.

This battery is IMR protected correct?

No. It is a IMR/ICR hybrid that does not have protection circuitry on it because it doesn't need it. It will not vent with flame when if vents. ICR batteries need the protection circuitry to prevent a burn if they vent. If the protection electronics fails on an ICR battery and you short the battery, you will have burning gas to contend with. That is quite explosive. IMR and hybrid batteries are considered safer chemistry because they do not burn when they vent. It's the burn that can turn a PV into a pipe bomb.

I read all those too. Everything on the page.. I'm just trying to put everything together. Ive learned a lot. So theres nothing on this battery I need to worry about right? I can hold the button down for a long time right? at say .3ohm and anything higher?

Learn about Ohm's law. Here's a Ohm's law online calculator. Enter the resistance of your coil and the voltage of the battery (4.2V is a good voltage to enter). Click on calculate and see what the amp draw is. There's also a online SubOhm Battery Chart here. Find your battery in that chart and check the coil resistance at the top. If you're in the yellow range for that battery, you are good to go with that battery as long as you don't short it.

IMO, with your VTC5 battery you can go down to 0.3 ohms and you are safe as long as you don't short the battery. You have a bit of leeway in there, but I don't take my batteries down to the last mA of draw they are theoretically capable of and consider that safe, so I will not tell you to go for that either.

Hope this helps.

 

[ScottChensoda]

One or two things spring to mind that may be of assistance to you @lopenator:

1. Unless you have lungs the size of the Goodyear Blimp, you need not concern yourself about holding the button down for more than 3-4 secs on a .3 ohm coil, otherwise I daresay you'll have vapour coming out of your ears.

2. The switch springs that come with any Nemesis are not ideal, more so with the clones. Most vendors in the UK issue two N35 or N45 magnets with the Nem clones as standard. I don't know the story with what happens stateside. If you don't receive any magnets with your device then you will need to source two sintered 17mmOD x 10mm x 1mm NdFeB magnets to ensure a smoother switch operation. Just be aware that sintering makes the magnets somewhat brittle and can break if you allow them to snap together.

3. Also as a general tip on sub-ohmvaping, it is vital the lower the ohmage you vape at, the more you need to increase the airflow on your atty. If you don't you will end up with a nasty burnt taste and at the same time you will be placing a lot of stress on the battery as due to poor airflow the heat generated from something like a .3 ohm dual coil is unable to dissipate through the air holes and is therefore taken up by first the atty, then the battery and then the mod itself. Not an ideal situation to say the least.

4. If you are not too sure about drilling out atties until you gain further experience, I can thoroughly recommend the Fogger V4 as the airflow control on it is superb as standard and will comfortably allow you to vape at .5 ohms. I discovered this just recently and enjoyed the quality of vape so much I now use three copper Nemesis clones and three Fogger V4's as my basic every day equipment. Everything else has gone into the Bitsa Box.

5. And the most important: Vape safely.

 

[lopenator]

Thank you so much for this infor and explaining it to me instead of just sending me to a link with a lot of math equations. This makes a lot of sense to me.

Just to reiterate, and make sure I'm learning, I would be safe on the AW IMR 18650 1600 mAh also. Not as safe, but still I should be able to get by.

It can do 30A discharge continuously until it's empty without venting. There is a burst discharge rating also. For this battery I believe it's 60A. I believe that is for 5 seconds at a time, but there is more to that and it is not recommended that we vape in that range of battery current draw.



'C' is the capacity of the battery. So a 1600 mAh battery has a '1C' rating of 1600 milliAmps (mA) or 1.6 amps. Discharge that battery at 1.6A for an hour and it will be empty. Discharge it at 1.6 * 2 = 3.2 amps for 30 minutes (0.5 hours or 2'C') and it will be empty.



It is very good.



No. It is a IMR/ICR hybrid that does not have protection circuitry on it because it doesn't need it. It will not vent with flame when if vents. ICR batteries need the protection circuitry to prevent a burn if they vent. If the protection electronics fails on an ICR battery and you short the battery, you will have burning gas to contend with. That is quite explosive. IMR and hybrid batteries are considered safer chemistry because they do not burn when they vent. It's the burn that can turn a PV into a pipe bomb.



Learn about Ohm's law. Here's a Ohm's law online calculator. Enter the resistance of your coil and the voltage of the battery (4.2V is a good voltage to enter). Click on calculate and see what the amp draw is. There's also a online SubOhm Battery Chart here. Find your battery in that chart and check the coil resistance at the top. If you're in the yellow range for that battery, you are good to go with that battery as long as you don't short it.

IMO, with your VTC5 battery you can go down to 0.3 ohms and you are safe as long as you don't short the battery. You have a bit of leeway in there, but I don't take my batteries down to the last mA of draw they are theoretically capable of and consider that safe, so I will not tell you to go for that either.

Hope this helps.

 

[lopenator]

Okay, I know about the air flow, and alot of what you spoke about here except for one thing. I have drilled out air holes before. Something you got me on is magnets. Now, I've heard talk about these while I was reading, but they did not explain what they were. What are these magnets? The Nemesis has a faulty button?

One or two things spring to mind that may be of assistance to you @lopenator:

1. Unless you have lungs the size of the Goodyear Blimp, you need not concern yourself about holding the button down for more than 3-4 secs on a .3 ohm coil, otherwise I daresay you'll have vapour coming out of your ears.

2. The switch springs that come with any Nemesis are not ideal, more so with the clones. Most vendors in the UK issue two N35 or N45 magnets with the Nem clones as standard. I don't know the story with what happens stateside. If you don't receive any magnets with your device then you will need to source two sintered 17mmOD x 10mm x 1mm NdFeB magnets to ensure a smoother switch operation. Just be aware that sintering makes the magnets somewhat brittle and can break if you allow them to snap together.

3. Also as a general tip on sub-ohmvaping, it is vital the lower the ohmage you vape at, the more you need to increase the airflow on your atty. If you don't you will end up with a nasty burnt taste and at the same time you will be placing a lot of stress on the battery as due to poor airflow the heat generated from something like a .3 ohm dual coil is unable to dissipate through the air holes and is therefore taken up by first the atty, then the battery and then the mod itself. Not an ideal situation to say the least.

4. If you are not too sure about drilling out atties until you gain further experience, I can thoroughly recommend the Fogger V4 as the airflow control on it is superb as standard and will comfortably allow you to vape at .5 ohms. I discovered this just recently and enjoyed the quality of vape so much I now use three copper Nemesis clones and three Fogger V4's as my basic every day equipment. Everything else has gone into the Bitsa Box.

5. And the most important: Vape safely.

 

[lopenator]

I'm doing one more post. I don't care if its 3.

I want to thank both of you a lot for your help. I was up until 330AM doing research on batteries and I got the ohm law calculator on my phone. Thats pretty simple to use. Watching youtube videos about battery safety and all. Thank you both.

 

[ScottChensoda]

The nemesis comes with a two-spring operated button switch which to be honest is not very good. It is very catchy and snags on the sides as it is depressed unless you press it dead centre each time. The magnets, though not perfect, do in fact make the switch/button a lot smoother to operate. For a few bucks it's a worthwhile investment. Here's a vid on how to do it.

 

[lopenator]

The nemesis comes with a two-spring operated button switch which to be honest is not very good. It is very catchy and snags on the sides as it is depressed unless you press it dead centre each time. The magnets, though not perfect, do in fact make the switch/button a lot smoother to operate. For a few bucks it's a worthwhile investment. Here's a vid on how to do it.

OO the magnets repel eachother making the switch work better? That's awesome. Thank you!

 

[ScottChensoda]

Pleasure lopenator. Enjoy the vape.