It’s better to calm down. Nobody it trying to get you. We are just trying to learn. We flashlight guys don’t usually learn of a new battery until it’s available for retail sales so we can be a bit behind the times.
Do you have any idea of the difference between the 50G and 50E? Maybe they are the same battery just sold to different markets? I really can’t see any difference. They should both have the same capacity and current output.
That’s what a technician from QB told me: The 50G and the 50E, differs from each other by their respective chemistries which are different as well as their lifetime (depending on the discharge levels in amperes , depending on the use their life cycles will be different). Otherwise, yes for the specifications in general they are the same for both: Nominal 5000mAh and 10A continuous discharge. The 50E is officially intended for use in electric vehicle batterypacks (in short, they are certainly optimized for this use).
Wow, you’ve been on a 21700 buying spree! :partying_face:
There’s something about this statement that seems off “just like the VTC6 is better than the 30Q”. I remember some folks talking about how the vtc6 degrades faster or something. So I would put the 30Q as being the better cell. At least by a small margin. I can’t find that conversation. Do any of you guys remember this?
Hold I have a puzzle question for you guys, what’s the difference between these two Samsung models? (Me, for my part I know the answer, hehe)
I think you mean 50G is for EV use.
Okay, since I think most electric vehicles only charge their cells up to around four volts (for longer life and faster recharges) maybe they optimized the chemistry just for that application = Longer life and more charge/recharge cycles at 4v or less.
IDK, I’m just guessing here. Then the 50E is the consumer or general purpose version.
I have no idea. I’m still waiting on my first 21700 flashlight. Lol
Yep there were some sales on 18650batterystore.com and there’s also free shipping when I buy over $100 so I thought might as well. Also I think VTC6 is better than the 30Q based on HKJ’s comparator. VTC6 also has more capacity.
Nobody else has any theory or assumptions, I accept even the craziest ideas? lol … I’ll give the answer in a few hours, by then, good luck. A clue: Myself, when I was looking for this answer a few months ago, I was building extravagant theories when the answer is not that complicated at first sight.
Why are the Samsung 21700 cells so expensive? Samsung 40T goes for like $20 on imrbatteries.
It’s fresh on the market, so supply is low and demand is high.
The 30T has come down to about $14 and the 48G down to $9. Give it a few months and the 40T will be more common and the price will drop.
Samsung 30T is $12.99
If you want to buy the 40T, I recommend you get the VTC6A, which Mooch rates at 30A continuous. It should be at least as good as the 40T if not better. Currently on sale for $13.99
https://www.18650batterystore.com/21700-p/qso-21700-4000mah-vtc6a.htm
The difference is 2 years.
Yes, you are on the right track, but more precisely? (because your answer is a very good clue to find the right answer to my question)
Not sure what do you mean. One cell is 2 years older than the other. Which suggest that one is an older model than the other.
Designation 40S suggests lower discharge rate than 40T. Which may be due to internal improvements. Or may be due to other factors.
My guess is that 40S is just older and technically worse cell.
But maybe you meant something else?
Well, because you’re really close to the right answer, and if I keep telling you that it’s not exactly that, there’s a risk of both going around the answer for a very long time moment, so I give you the right answer.
The 40S is the starting denomination of the 40T, because during its design and as you said before its chemistry and its internal settings were slightly different, which after multiple tests on the part of Samsung SDI engineers was resulted in a significant improvement in its discharge capacity and internal resistance, which pushed them in the end renamed the INR21700-40S to INR21700-40T, so to sum up the 40S is the pre-release of the 40T.
P.S .: Thanks to the Vapcell Technical Manager for enlightening me on this subject.
Thanks for the response. I just checked and the price for the VTC6A is $16.99. I guess I missed the sale price… I guess I’ll wait for the prices to go down a little but I ordered one of the sofirn 21700 lights and need a cell for it. I guess I can use a 20700 or 18650 with a sleeve for now.
Sofirns battery is only $5.50 extra so it’s worth getting.
Another inexpensive 21700 is the Liitokala lii-40A. It’s based on the Lishen which is proven to be a good high drain cell.
Thanks I’ll look at those cells too.
It’s depending on how the cell is used, in which flashlight. I did try several 21700 cells (LG M50, Samsung 50E, 48G, 40T, 30T, Sony VTC6A, LiShen LR2170SA, LR2170SF) on two versions of ACEBEAM EC65 (XHP35 HI and Nichia).
With sufficient cooling, I activated the Turbo again and again, until the cell voltage was too low to sustain that brightness level. And the results are:
For both EC65, the 40T was slightly better than VTC6A. And the AC 1khz IR was also smaller on a 40T.
For a XHP35 HI EC65 (high demanding), 40T provided the longest Turbo.
For a Nichia EC65 (not that high demanding), LR2170SF provided the longest Turbo. This is surprising but yet reasonable, since the characteristics of this cell are between 40T and 50E.
Since some of these cells are not that easy to find, and I cannot assure you that my samples are consistent with what you can buy, you’d better take these results as reference only.
Is there any information if the 40T cell is being sold by other brands as a "rewrap"? I'm looking for a (European) source to get some of them. Concerning the Samsung 40T, NKON needs a couple of weeks until stock gets replenished and akkuteile.de is out of stock and wants a fortune for this battery.