Your results on the BT-C3100 seem (more or less) in line with the results from Zack in the first post and also ‘in the same ballpark’ of those you did 12 days ago. I’m surprised though, that your first discharge test at 500mA gave a higher result than the 300mA discharge you used for the shown above. Normally my experience is that it’s the other way around with a high discharge rate.
The results from the BL4 though, feel like they are on the ‘optimistic side’.
There is always variation between different consumer chargers/testers, but this difference feels way bigger than it should be, in my opinion. (No the question is: who is the biggest culprit of the 2, in terms of this(too) big difference? )
Well, I think BL4 and BT-3100 results difference could be explained by different cut-off voltage. I wish C4 Evo was not that buggy, as it allows to customize almost every single parameter.
For me bottom line is F15 and F12 are about their claimed capacity and that Vapcell is one of the few companies that re-wraps cells (as oppose to manufacture them) that I can trust.
They do have H10 flat top cells. Which is what I use in the TS10s that I have that are more length sensitive. It is curious that the original TS10 that I still carry everyday gets along with the button top H10 quite well. If I was worried, I would look for the F15 in a flat top.
I was thinking for my Lanapple but it looks like it might have physical reverse polarity protection so flat tops may not be compatible. An H10 button top is too long.
I have an updated version on my test since I found how to make my C4 Evo to do a correct test. (It turned out that either measurement or calculations or both are incorrect for Li-Ion cell inserted in vertical slots, so I used spacers and measured capacity in horizontal slots).
We can use 14430 batteries to process the positive electrode protection plate with USB-C, which is about 1300mAh, but we don’t have any sales and this will incur significant costs
The sales of protective panel batteries are relatively poor, and the flat top battery cells or button top versions are more suitable for our market
I have Vapcell F15 which I buy with Convoy T7 and I do discharge test with Liitokala Lii600 charger and get capacity 1495mah with 500ma discharge current. Very good battery but I think that it lenght may be problematic for some flashlights
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