Methodology used to achieve a 500 mA charge and discharge rate with the Liitokala Lii-500:
The batteries were fully charged using a 500 mA rate, and then removed from the charger.
The batteries were reinserted into the Lii-500 and (1) the NOR test function was selected, and then (2) a 700 mA charge current was selected.
The Lii-500 ran for a few minutes in the constant voltage charge phase, and then began the NOR test.
Because a charge rate of 700 mA was selected, a 500 mA discharge rate was attained during the NOR test. If a 500 mA charge rate had been selected, then the Lii-500 would have used only a 250 mA discharge rate.
The capacity results obtained from this test align fairly closely with the 1003 mAh capacity (at 500 mA discharge rate) advertised by Vapcell. and the 924 mAh capacity measured by HKJ.
The internal resistance results from this test meet the AC 1 kHz specification of 60 mΩ max advertised by Vapcell.
I must say that I am positively impressed with these batteries so far!
Added 24 Mar 19:
Informal Measurements of Six More Vapcell 14500 "Gold" Button-Top Batteries. The purchase price was still $4.11 per battery. UPS ground shipping was about $1.00 per battery for the these six 14500 batteries plus four additional 18650 batteries. That is to say, the total shipping cost for 10 batteries was $9.70. Therefore, the cost + shipping for each Vapcell 14500 battery was about $5.10.
Purchased From LiionWholesale on 25 Jan 19
Capacity measured with a Liitokala Lii-500, using a 500 mA discharge rate 1 kHz internal resistance measured with an SM8124A (see illustration)
Measurement temperature was about 77 ° F (25 ° C)
Battery
Number
Capacity (mAh)
AC 1 kHz IR (mΩ)
5
938
48.2
6
961
50.6
7
970
49.7
8
992
49.1
9
958
49.4
10
959
47.4
The average capacity of all 10 cells is 966 mAh, and the average AC 1kHz IR is 48.7 mΩ. I've used Vapcell 14500 1000 mA Gold batteries regularly now for about three month, and I like, gift, and recommend them!
I hope for the best, we'll see how long does this last.
Concerning wolfdog1226's test, those “high current” fast spoiling 14500 cells I'd bet come from the same factory as the TurdFire :-D IMR14500s. I must say they do not seem to be heat resilient, I rewrapped a couple and this was enough for them to start misbehaving. This is what my owner friend reported later.
These manufacturers need to learn to stop self-sabotaging their own success with this roguery.
I’m curious how long the Vapcell hold their capacity —- I have some Evva/sanyo 840 mah that are 4-5 yrs old still testing around 750-780
as far as Efest — that’s typical they loose lots of capacity in just a couple yrs ( the worst)
ran mine on 700ma discharge and got 1035 and 1022 out of two, just started running them on a new Klarus XT1A and Rofis R2
just curious since nobody mention this, i suppose these cells arent protected? they are however a little bit longer than the regular sanyo 800mah 14500 cells
What analyzing charger did you use? I ask because this seems a little high.The Manufacturer Rated Typical Capacity is 1000 mAh, and the Manufacturer Rated Nominal Capacity is 900 mAh
I queried Vapcell if these 14500 gold cells were protected and the answer was no. I asked because of the indent around the cylinder near the anode which sometime indicates added protection circuitry.
I am using these cells in my EDC Thorfire TG06S and my new AceBeam H40 headlamp - and have gifted one with a TG06S. I really like them so far and ordered six more from LiionWholesale. Because of the cells's 1000 mA capacity, I am afraid that the current $4.19 price may just be an introductory offer.
The above 16500s (as far as my cell identification abilities go) are Heter Battery manufactured, and that AliExpress seller is quoting me $5̃.19 ($2.595/piece) for a pair shipping included. Now let's make an interesting comparison:
So Heter Battery is ultra likely to manufacture both cells.
Same 16500 cells as before, but this time at $2.49 + shipping. Doing the math: 4 cells cost $9.30 ($2.325/piece), 6 cells come out at $12.52 ($2.08667/piece), or 8 cells at $16.49 ($2.06125/piece).
Now let me set this on fire: what is the reason I cannot manage to see a clear picture of Vapcell 14500s' top in AliExpress? Because they're trying to hide the facts.
P.S.: had to edit the message because the AliExpress system is right now malfunctioning or it is my recently upgraded browser, the amount total for the cells is only raising in the cart page.
P.S.2: edited again to fix the stated price for the Vapcell 14500. Just checked it myself at $6.99 a pair so not bad.
Hi Dennis, did you already have a look into a new high current/capacity 16340 battery? Or is it really not worth the effort for Vapcell because it is not used for vaping? (still many many flashlight lovers will be interested).
We are paying attention to your needs and listening to some members’suggestions.
Thank you very much.
16340 batteries have been in the development stage, and need to negotiate a lot of factory and sample testing. Recently, I am busy, and I don’t have much time to speak in the forum. :cry: