Noisy Cricket Surprise

[Edwin Betz]

So I did something really stupid. I bought a Noisy Cricket hybrid mech double battery mod. Good price...$7. Didn't really do my homework though. I punched the numbers into my vape tool app to see if my build was safe for my batteries. Well I entered 4.2 for the voltage and .18 for resistance and my batteries, according to the app and MY numbers, was safe.

Damn was I surprised when I hit my Madhatter RDA. I about choked. Wow! From what I've found out so far the voltage changes with 2 batteries. Can someone please explain how it changes and what my voltage should be?

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[93gc40]

Isn't the noise cricket a series mod. So start voltage is 4.2 volts times 2 batteries.... if parallel the volts is 4.2 with amps double.

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[Edwin Betz]

Does the amp rating for the batteries also change?

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[Edwin Betz]

That means I was vaping at 300+ w? Does the current for the batteries double also or is that just for parallel?

So should I be safe using 35A batteries with 8.4v and .18 ohms?

Isn't the noise cricket a series mod. So start voltage is 4.2 volts times 2 batteries.... if parallel the volts is 4.2 with amps double.

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[Zaryk]

With that build, you were probably pulling around 45a and putting out almost 400w. You need to put 8.4v in the calculator. You will likely want something at or above 0.5 ohms for that set up.

I'm pretty sure there is a way to switch the mod over to parallel and run it at 4.2v. It is important to understand your equipment before just dropping in a build and going at it.

 

[Zaryk]

That means I was vaping at 300+ w? Does the current for the batteries double also or is that just for parallel?

So should I be safe using 35A batteries with 8.4v and .18 ohms?

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In series the voltage doubles. In parallel the MaH doubles. The amps don't really double in parallel, it is more like 1.5 times the amps.

And no, you were well above the amp limit of your batteries.

Also, what batteries are you running. Because there are no 18650s with 35a.

 

[bombastinator]

Iirc the noisy crickt can be parallel OR series depending on how you set it up. The bottom plate goes in two different ways or something

 

[Edwin Betz]

In series the voltage doubles. In parallel the MaH doubles. The amps don't really double in parallel, it is more like 1.5 times the amps.

And no, you were well above the amp limit of your batteries.

Also, what batteries are you running. Because there are no 18650s with 35a.

LG CP2 18650
2500mAh
35A

5 LG CP2 18650 2500mAh 35A High Drain 3.6V Rechargeable Battery Flat Top | eBay

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[r77r7r]

LG CP2 18650
2500mAh
35A

5 LG CP2 18650 2500mAh 35A High Drain 3.6V Rechargeable Battery Flat Top | eBay

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It says "used batteries" on the ebay link.

 

[diagrammatiks]

Did you buy those from eBay?
Mooch has never tested those batteries so we have no way of using their real rating.

You could have blown your head off.

 

[Zaryk]

LG CP2 18650
2500mAh
35A

5 LG CP2 18650 2500mAh 35A High Drain 3.6V Rechargeable Battery Flat Top | eBay

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There is no such thing as a 35A 18650 battery. Highest is 30A, but they never have as high of mah as what that claims either.

I have not seen that particular cell before, and it seems mooch hasnt tested it. EBay is notorious about exaggerating ratings, and sometimes outright lying. I would be very sceptical of using that cell myself. I will try to find some info on that cell.

Always buy batteries from trusted sources only. Never buy them from eBay or amazon (or other sites like that).

 

[Zaryk]

I cannot find anything about that cell anywhere other than that person's eBay page. I wouldn't use those batteries, you have no clue what they REALLY are.

 

[Fidola13]

To be honest it doesn’t sound like you know enough to be fooling around with the equipment you bought.

Good Luck

 

[tailland]

Didn't really do my homework though. I punched the numbers into my vape tool app to see if my build was safe for my batteries. Well I entered 4.2 for the voltage and .18 for resistance and my batteries, according to the app and MY numbers, was safe.

Let's see.. 3.7-4.2V/0.18ohm = 20,55-23,3A

If the 2 batteries in your mod are running parallel, the voltage stays at 3.7-4.2 and the amps are evenly divided, taking 10,28-11,67A per battery. That should be alright if the battery is good.
If the 2 batteries in your mod are running in series, the voltage doubles to 7.4-8.4 and it will try to draw between 41.11-46,67A from your batteries, resulting in a possible output of 304-392 Watts.

That's how you make national news, I guess....

And btw, I don't believe your app said this was ok.

 

[93gc40]

Which version of cricket?

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[Eskie]

Lose those batteries. There are no 35A CDR 18650 from anyone. And they're supposed to be 3.7V nominal, not 3.6. Also on a mech always use the 4.2V to calculate your draw as that's going to be the highest stress on the battery. Sure, 2 parallel 30A (or even 25 with a draw of 23A) and you're fine. Two batteries in series in a mech shouldn't be below 0.5 ohm for the build. Count yourself lucky and ask lots of questions about this stuff before you get into problems. The NC is a nice sorta mech depending on version but it needs to be treated with all the respect any mech demands.

And never get batteries on eBay. You're asking for trouble. See Mooch's chart here. There are trusted vendors for batteries on the bottom. There are also some new Samsung releases that haven't made the list, but I expect Mooch will update soon.

 

[Hawise]

And btw, I don't believe your app said this was ok.

Operator error (aka GIGO). The app was told the batteries were parallel, which would have been OK, when they were actually in series. The best app is no use when it's fed faulty data.

 

[Edwin Betz]

Everyone has to learn sometime. The first vapes were mech and took a lot of trial and error to figure out. That is why I use forums like ECF and VU. When I feel something is not right or I realize I "didn't do my homework" or did something really stupid(like throwing a .18 build on a Noisy Cricket) I ask questions on these forums.

Yes I do admit I was really careless in not asking questions on ECF or VU BEFORE trying the NC. I have been using single battery hybrid mechs for a while and never had a problem. The NC is my first double battery mech and I should have asked questions FIRST.

To be honest it doesn’t sound like you know enough to be fooling around with the equipment you bought.

Good Luck

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[Topwater Elvis]

Those batteries are not suitable for vaping use at all.

They are used harvested from battery packs.

Not to be rude, in several of your previous posts we've been over the importance of using quality name brand cells.
Where you buy cells is equally as important to avoid receiving lesser quality rewrap, counterfeit and used harvested cells.
Stick with cells on Mooch's list and only buy from known reputable sources.

Without a doubt batteries are the very last place in vaping to try to save money.

 

[tailland]

I have been using single battery hybrid mechs for a while and never had a problem

I'm not sure whether or not you realise how lucky you've been. If you indeed did what you said you did, you had an honest chance of becoming the next poster child for the "ecigs explode" PR machine, and probably at great personal cost, too.

My question to you would simply be: Why?
What is so unappealing about learning the basics of Ohm's law that a mech mod user would risk his health over ignoring it? Is it too much to learn, is it too complicated, what is it?