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As you say there are some other new formats, 26700 is one of them. Two days ago I sent a couple LiitoKala Lii-40E 4000mAh LiFePO4 cells from here to HKJ, I am curious to see how these high capacity LiFePO4 cells perform. And almost inmediately after I found seller GlobalPower advertising what...

Hello! What's up? :) This cell was tested sometime ago by Thunderheart Reviews, check Queen Battery QB26800 6800mAh 20A - the big guy! In the above review the cell delivered slightly less capacity, while the claimed manufacturer cut-off was 3V (I remember having checked the datasheet back then...

Very recently Henrik (HKJ) published its Shockli IMR14500 1050mAh (Orange) 2020 review: Both current (12A) and capacity ratings by Shockli can only be considered “noticeably exaggerated”. Suffice to say they're rewrapping the same cell, and their “sleeves” are a lot less attractive. Thanks...

So you stick to a “minimum or guaranteed capacity” rating scheme. That's fine, imo. Just fixed my post above, by the way. I wrote “at 5 A looks like it barely meets 900 mAh down to 2.8 V” but I wanted to say “down to 2.5 V” instead. It can be clearly seen that the attained capacity at 5 A down...

Hello! Mooch, could you please measure the diameter of these cells? I'm asking this because, according to a news note in the Vapcell site posted by the end of last November (Vapcell 26650 5000mAh 20A battery upgrade), these new cells likely are the same ones referenced in the note, dubbed now...

Good looking cell. Manufactured by Heter as far as I know. I'd say the official capacity rating is 950 mAh, your figures match and cells meet such rating. Being small cells, I believe it is more correct to allow a higher granularity in the ratings. By looking at the curves it also is clear to me...

Just dropped by, and while drug wise my war is over, let me chime in. So this is Samsung crying to the powers that be. LG published a related video some months ago here (source: LG video threatening fines and jail time for consumers using their cells @ BLF). What about Murata/Sony? I know they...

Just in case it still is of service, and since in a mod you need a high current spring, let me recommend some stuff: Silver coated phosphor bronze springs @ Kaidomain, these will compress deform to some extent (check this animated gif from here). Hank Wang's gold plated beryllium copper...

The title says it all. Vapcell has been requesting the development of some new high discharge cylindrical cells to certain OEMs for already some time, and they're harvesting the benefits. In the small cell category (10440, 16340, 14500) they already launched the Vapcell INR10440 320mAh (3 A) and...

Well, I took a look at the Vapcell INR18650 G26 curves, that cell is an LG H26 rewrap: Looks like Henrik set the x-axis scale wrong. :confused: At 3.6 V that cell is at ≈1.7 Ah out of ≈2.42 Ah (for 15 A or so discharge). At the 1.7 Ah point the red curve is a little bit below 3.6 V. 1.7 Ah /...

By my hawk eye powers I'd say the SoC of a typical high discharge cell at 3.6 no-load volts is slightly below 30% already. Mmmkay. Mech user ;) Rossum has a point here. A very low discharge rate curve (or pulse curve) would solve our needs. Henrik, the lygte-info.dk guy, tests at 0.1 or 0.2 A...

This is the thing which made me ask the cooling question. If a hot battery performs better, there is no reason for a lesser discharge time. At least not if considering just these variables, there must be something else indeed.

Pretty informative, thanks. Not the first time you speak about this, does some people often disagrees with your testing methods? Do you think some strain reducing extra cooling (a small fan blowing air) over the cell during continuous discharge could compensate the very slight reduction in...

Came here looking for battery chargers LoL. Technically speaking these are power supplies. Henrik's work in this respect is very appreciated, particularly in noise and safety areas. Thanks to his reviews I started using Fonken devices, very good performers at fair pricing. Blitzwolf @ Banggood...

Just dropped by and, maybe no real need to say but a few days after this weird sale someone on another forum told me the 4000mAh cells sale was a mistake, with buyers getting their orders cancelled. So maybe all of this was some sort of seller mistake after all.

Anna, why are you taking my contribution so personally? Let me guess, is it because you can't believe it? The fact you can't believe something does not make it impossible. Others may be able to manifest such a thing, namely depending on their development level. I didn't say I use AliExpress as...

The deals are lapsed, I came here to share them. Period. I refuse to go with senseless arguments. You have a lot more power than you may think. I could tell more, but no reason given the judgmental atmosphere. Anna, if your kid has higher shopping skills than you that likely is due to his...

First of all, I didn't came here to tell you how should you proceed. And AliExpress is reliable if you know where and what to buy, there are reliable and communicative sellers. I know of at least a couple stores which sell first brand genuine cells (Aliya's and Lucky's). AliExpress, very much...

Mmmkay saw this half a day ago or so and I must admit I've been fighting against myself to avoid buying what I don't really need. I also catched a cold prior to this AliExpress sale frenzy and I'm running some fever, making my @#$% harder. Someone in BLF posted a 21700 4000mAh Shockli deal which...

In a dildo that is quite a bit more permissible. :D Oops! :rolleyes: Wrong forum! :blush: