Samsung 25R Cult?

[Myk]

Why does anyone need an "excuse" to vape whatever gear they prefer?

They don't, just like they don't need to justify why they like a certain battery.

But I would think someone who's badgering people about their ancient battery tech would be equally obsessed about their own power tech being the most up to date.

 

[Mooch]

I have a test equipment which measures the internal resistance of batteries.
The sale model, 25R, 30Q, 5A, etc. is more a broad classification of the quality, not a precise indication of its performance.
The 25R, I can say, are best bang for the buck.
Most of the 3000 mah batteries tend to slip around 30 milliohm, not the declared 20 milliohm.
If you can't measure the internal resistance, sticking to 2500 mah batteries will ensure a better general performance of your vape device.
A 2500 / 20 battery is better than a 3000 / 30 under ALL circumstances.

Are you measuring AC or DC IR? What are you measuring it with?

Most 3000mAh batteries have a DC IR near 20mOhm and an AC IR lower than that.

A 2500mAh/20mOhm IR battery (AC or DC IR) is most certainly not “better” under all circumstances. At a certain discharge current point, and lower, the higher capacity of the 3000mAh cell will allow it to deliver a greater amount of energy, in Wh, than the 2500mAh cell. This allows the 3000mAh cell to run for longer.

 

[Mooch]

Hello Dripster,
I was trying to articulate a response, but I am incapable to make a sense of your post.
The battery current used by Mooch is the maximum current allowed at a given temperature, and a direct consequence of internal resistance of batteries - not else. Hence, IR is the only number that counts.
I do not use mechanical mods- they are a clear and present danger, have poor performance - the Neolithic of vaping.

Huh?
IR is definitely not the only number that counts. Not by a long shot. The energy delivered, its Wh spec, is a critical part of deternining if a cell is worth using.

What good is a 10mOhm 500mAh cell compared to a 20mOhm 3000mAh cell?

Different chemistries and construction, independent of IR, also determine the degree in reduction in IR as the cell heats up. This affects its run time, independent of the starting IR value.

Both IR and capacity, and their effect on the energy that can be delivered down to a cutoff point, are critical.

 

[williamclarkonet]

Huh?
IR is definitely not the only number that counts. Not by a long shot. The energy delivered, its Wh spec, is a critical part of deternining if a cell is worth using.

What good is a 10mOhm 500mAh cell compared to a 20mOhm 3000mAh cell?

Different chemistries and construction, independent of IR, also determine the degree in reduction in IR as the cell heats up. This affects its run time, independent of the starting IR value.

Both IR and capacity, and their effect on the energy that can be delivered down to a cutoff point, are critical.

Hey @Mooch was hoping you would way-in on this topic is the 25R still a top performer in the 20ampish battery category or have they been superseded by other batteries?

 

[Mooch]

Hey @Mooch was hoping you would way-in on this topic is the 25R still a top performer in the 20ampish battery category or have they been superseded by other batteries?

Superseded a long time ago by the VTC’s, especially the newer VTC4A, VTC5A, VTC5D, and VTC6A, and lately the Samsung 24S and 25S.

It was always a solid performing battery but now its age is showing. Good for cost-sensitive shoppers though.

 

[Myk]

Good for cost-sensitive shoppers though.

I.e, cheap, that's me.

 

[dripster]

I.e, cheap, that's me.