Samsung INR21700-40T

Lithium Ionen Industriezellen IMR, INR, ICR & LiFePO
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shadockan
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Re: Samsung INR21700-40T

Beitragvon shadockan » Do 11. Apr 2019, 04:04

I would like to ask ......
- How do you calculate Watts on a mechanical device?
- Do you use the law of Ohm without knowing exactly the current that reaches the atomizer poles?

Mechanical devices have losses.
With a resistance of 0.14Ohms, you will never see 3.7V at the poles.
Up to 3.3V I have seen with such resistors on a copper device.
With a resistor of 0.10Ω, this translates to 42A if the battery is at 4.20 volts ....... but in the vaporizer it will go up to about 3.0 volts ...., so 30A.

Without a multimeter to see the current that reaches the poles, you can not count anything.


With such resistances, 30T rather than 40T should be used.
30T is capable of 40A, resulting in 30A in the atomizer.
40T can not have 40A performance.
We can see a small difference in the poles compared to 30T, but the temperature will be very different.

Sorry if I did not understand something right .....

funkyruebe
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Re: Samsung INR21700-40T

Beitragvon funkyruebe » Do 11. Apr 2019, 08:27

@shadockan
You´re right in case of the voltage drop. A voltage Divider of ModRi + AttyRi + Coil <0.2 Ohms will always bring the coil voltage down to <3.7V, because ModRi + AttyRi will be >0.04Ohm, using perfect stuff. So the coil voltage will be 3.5V or lower.

In TheHaze case ( 0.15 to 2.0 Ohm coils ) the 40T is the best choice imho. Because of the above he will never exceed 22A.

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shadockan
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Re: Samsung INR21700-40T

Beitragvon shadockan » Do 11. Apr 2019, 16:53

Ohms of resistance do not have the primary role in performance ...
The most important is the size (thickness-length) of the wire in terms of performance.

With same Ohms and the same battery, but
different sized wire, we will have the same Watts yield, but different temperature rise in the wire.

All this I wrote to justify this:

With a thinner wire, we can have more resistance, but due to its size, the current delivered by a battery will be able to heat the wire and thus have the result that we are requesting.

SO ....


We do not have to ask for the top of the battery.
We can have the result we want without exaggeration .....


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