I just received a few 25R’s, and these really impress me.
All of my lights that pull 4 amps or more are brighter with these cells, compared to my PD’s, LG D1’s, and 20R’s.
They also have pretty decent capacity.
Is there something better, or are these the best all around cells right now?
I heard those are very good. I just got some Effest 35A 2500mAh “High drains” for a modded light.
HKJ rates these very good as well. No idea which ones are better,both are good! 
Do both of you have a link to those high drain batteries? what is the capacity of the 25R?
Is that 15 amps drain over the whole capacity or only for the first 10 mins?
i think the NRC-B's are the better choice
NCR-B cannot push 4 amps to an XML2.
For high output the B is not even in the same league. Only useful for a 2 amp output, and even then, there are better cells such as the LG D1 and E1.
Is 2500mah the highest capacity available on hi current discharge cells?
Thanks!
AlexGT
Efest do some 3100mAh 20amp IMR’s. They easily surpass any of my ICR’s for performance and seem just as good on runtime. If you aren’t needing max amp draw they seem like a pretty good bet IMO.
Im fairly sure 25Rs are right up there with the Sony VTC5 and the LG HE2 and probably the Efest 35A. The differences are technical, as in one has better initial output, the other sustains it slightly better, but we arent talking a great deal here. If you have any of them, they will be up to the job.
Thanks! 
Off to buy some… :party:
I think he meant the BD which is rated 10A, and for 5A and below it is a better choice than the 25R. NCR-B is good for 3A and below, I use them in most my lights, but I want to replace them with LG E1. I bought too many NCR-Bs when where were hot and I thought these should hold their place for a couple more years… wrong.
As I seem for high drain 2500mAh is the top capacity, but at the end is not capacity alone is not what matters. The efest 3100 have a few bad reviews on amazing and some said it was a rebranded panasonic… wow
For an example, I just put a triple XP-G2 in an Eagle Eye X6 recently. The Panasonic NCR18650B with 3400mAh capacity barely runs it at all…
Efest 35A does 2870 lumens
Sam 25R does 2819
Sony C5 does 2739
This is taking each cell fresh off the charger and the numbers are at start value. All 3 of these are allowing 12A or more to the triple XP-G2. All 3 are 2500mAh capacity cells.
There is usually some variation from one light to another as to which cell performs best. The Efest 35A and Sony C5/C4 are almost always top performers, followed closely by the Samsung 25R/20R. Then the PD/PF series from Panasonic. I have yet to test BD cells against these others.
The Efest cell is consistently at or on top, and readily available. So I have more of these than any other single cell.
Hope this helps. It’s always a good bet to ask Richard and let him know your application, he deals with all these every day and can give an excellent recommendation for what you are using.
It is interesting that your 25R is significantly outperforming your 20R. Your 20R must be getting tired because in initial output the 20R is the same or sometimes even slightly higher, although the 25R definitely starts to beat it pretty fast due to the increased capacity.
Sometimes, in some lights, the 20R’s Rule. But in other lights with different demands, it just isn’t so. Surprises me as well. And yes, my 20R’s have been around for a little while so there is probably some truth to what you say Master.
I don’t have that many cycles on my 20R’s, but in my 6 amp triple XP-G2, the 25R is noticably brighter with a ceiling bounce. The NRC-PD is not even in the same league.
These cells just really excited me, because the extra capacity gets them a lot closer to the traditional cells that have ~3000 mAh. While also providing blinding amps……
In terms of voltage sag at around 30A discharge or so, the best battery for the first initial 200mAh would be in order: VTC4, Efest35A/LGHE2, 25R, VTC5. After 200mAh it becomes VTC5, VTC4, 25R, Efest35a/LGHE2.
Uhm…….I wish I had a light that would draw 30A….I only need 6ish for now. Maybe 10A with a triple XP-L……
Even a plain jane everyday ICR will do 6 amps into a triple XPG2.
Even my Panny PD’s are not as bright in my 3x XP-G2 as my 25R’s. Not by much, but maybe a 3% difference at start.