Nobody recommends these batteries?

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beckdg

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For continuous, you are right.
There are batteries that can handle higher amps in pulse/burst.

Either way, no one needs over 30A. If you want to reach higher wattage, lowering ohms and pushing amps is not an effective approach. The best way is to increase voltage and ohms, so you end up with lower amp draw and higher wattage output.

Not possible

Period

The voltage of the battery doesn't change when you adjust wattage or voltage on your variable mod. Just the amount of current drawn from it to allow the wattage set.

Tapatyped
 

Ryedan

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Either way, no one needs over 30A. If you want to reach higher wattage, lowering ohms and pushing amps is not an effective approach. The best way is to increase voltage and ohms, so you end up with lower amp draw and higher wattage output.

In a VW mod the wattage is the most important factor in battery amp draw. Atty resistance is only a minor contributor here and only because the voltage regulator has different efficiency loss at different output volts. You need around 30 amps for 75 watts with an almost fully discharged single battery.

In a 200 watt mod with dual batteries you will draw around 30A from each battery when they are fully charged and that goes up to around 37A from each as they discharge.

It doesn't work that way in VV and mech mods of course.
 
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roxynoodle

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For 18650, there are a lot more that are 25A than 30A.

If you want higher than 30A, then go for 26650. I believe they go up to about 50A, if I'm not mistaken.

No, they don't. Read Mooch's tests of 26650s. One or two came in around 25A CDR, but most were less than 20A.
 

Revelene

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Not possible

Period

The voltage of the battery doesn't change when you adjust wattage or voltage on your variable mod. Just the amount of current drawn from it to allow the wattage set.

Tapatyped

I didn't say anything about settings on a variable mod.

If your device does not meet the demand... then it doesn't meet the demand.

Lower amp draw with higher wattage most certainly is possible with a higher ohm and more voltage.

Ohms Lawhttps://en.wikipedia.org/wiki/Ohm's_law
Ohm's law - Wikipedia, the free encyclopedia
 

beckdg

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I didn't say anything about settings on a variable mod.

If your device does not meet the demand... then it doesn't meet the demand.

Lower amp draw with higher wattage most certainly is possible with a higher ohm and more voltage.

Ohms Lawhttps://en.wikipedia.org/wiki/Ohm's_law
Ohm's law - Wikipedia, the free encyclopedia

:facepalm:

Only thing left is a mechanical series box mod.

So that's your suggestion on a thread where the OP doesn't know his batteries actual capabilities?

:blink:

No thanks, though... I don't need your Wikipedia references for ohms law.

Besides... with online calculators readily available, the important thing to know is how and where to USE and APPLY those formulas.

Tapatyped
 
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Revelene

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:facepalm:

Only thing left is a series box mod.

So that's your suggestion on a thread where the OP doesn't know his batteries actual capabilities?

:blink:

No thanks, though... I don't need your Wikipedia references for ohms law.

Tapatyped

That is not the only thing left... before jumping to batteries in series, there are other multi-battery setups that helps with amp draw (parallel). You do know how batteries in parallel handle amp draw, yes?

Point was that no one really needs high amp batteries, unless they know what they are doing. And if they know what they are doing... then they know more efficient ways to achieve higher performance.

...and what is wrong with a Wikipedia reference? It has the information needed to understand ohms law.

Can you really keep telling me I am wrong? If you know ohms law and how electricity works... you would not be disagreeing.

My comment was a general statement, rather than.. well, rather than whatever you are making it out to be.
 

beckdg

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That is not the only thing left... before jumping to batteries in series, there are other multi-battery setups that helps with amp draw (parallel). You do know how batteries in parallel handle amp draw, yes?

Point was that no one really needs high amp batteries, unless they know what they are doing. And if they know what they are doing... then they know more efficient ways to achieve higher performance.

...and what is wrong with a Wikipedia reference? It has the information needed to understand ohms law.

Can you really keep telling me I am wrong? If you know ohms law and how electricity works... you would not be disagreeing.

My comment was a general statement, rather than.. well, rather than whatever you are making it out to be.
Do read what YOU wrote.

Lower amp
Higher volt
More power

You need to comprehend this is the subject YOU dictated.

You were wrong. Period.

Don't get upset about it.

Don't change the goal posts now.

Tapatyped
 
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Revelene

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Do read what YOU wrote.

Lower amp
Higher volt
Less current

You need to comprehend this is the subject YOU dictated.

You were wrong. Period.

Don't get upset about it.

Don't change the goal posts now.

Tapatyped

I merely made a statement that said that increasing amp draw was not the most efficient and stated what the best approach was.

You are taking things out of context, just to start an argument.

Either way, no one needs over 30A. If you want to reach higher wattage, lowering ohms and pushing amps is not an effective approach. The best way is to increase voltage and ohms, so you end up with lower amp draw and higher wattage output.

The whole point was that lower amp draw is key. Maybe I should reword my statement... by maybe you should stop attacking me too.
 

beckdg

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I merely made a statement that said that increasing amp draw was not the most efficient and stated what the best approach was.

You are taking things out of context, just to start an argument.



The whole point was that lower amp draw is key. Maybe I should reword my statement... by maybe you should stop attacking me too.
The best way is to increase voltage and ohms, so you end up with lower amp draw and higher wattage output.

Again... cannot be done with a single battery as increasing the voltage can only be done through a regulator which then transfers that draw in amps directly to the cell.

Again... without a regulator, can only be achieved with series connected batteries.

Simple.

Now quit with the accusations.

We're allowed to attack a post here.

It's not personal.

Tapatyped
 
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.. and on the card for tonight's Main Event of Battery Wars #12,972, in the turquoise trunks we have the Maryland Mauler, @beckdg !! And his opponent in the aquamarine trunks, the Kentucky Klobberer, @Revelene !!!

Remember gentlemen, I want a dirty fight with lots of low-blows, head-butts, and blindside attacks of biting sarcasm. Strawman arguments and adhominem rebuttals are discouraged but acceptable.
 

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Lower amp draw with higher wattage most certainly is possible with a higher ohm and more voltage.

If you're saying that you can lower battery amp draw at a set watt level (or a higher one) by using higher atty resistance and the associated higher regulator voltage output ... no it doesn't work that way.

You might be confusing battery amp draw in a VW mod with the way it works in a mechanical or VV mod. Ohm's/Watt's law certainly works with all devices, but with VW mods battery amp draw is a more complicated thing to calculate.

The issue is that battery voltage does not change as regulator output voltage increases to accommodate the higher output voltage that higher resistance needs at the same watts. To make it more interesting, as output voltage increases, output amps decrease. What ends up happening is that 30 watts with a 0.1 ohm atty takes pretty close to the same battery amp draw as 30 watts with a 2 ohm atty even though the regulator output voltages are quite different in the two scenarios.
 

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