Tell me, and to what threshold level of voltage (v) do you discharge these of your elements?
The Lii-500 charger does all the testing automatically. HKJ says it discharges them to a bit below 2.9v.
Whoops, you are not measuring on a Lii-500. I guess I got mixed up.
Andrew_Debbie, beware! Since you said “C4” I initially thought you had a Zanflare C4 (which is a lot like the Lii-500), but no! You meant to say “ISDT C4”, which is quite bad. See HKJ's review: Charger ISDT C4 @ lygte-info.dk
Quoting Henrik:
[Quote=HKJ in Charger ISDT C4 review]The charger discharges to 3.1V and it looks like it is adjusting the current trying to keep the voltage at 3.1V. [/quote]
:facepalm:
[Quote=HKJ in Charger ISDT C4 review]The batteries are charged, discharged and charged again. The charge is not done correctly it is missing the CV part (See below about software update). … [/quote]
After the update to 1.0.0.11 firmware in the review, with li-ion cell:
[Quote=HKJ in Charger ISDT C4 review]…
A CV voltage has been added to the initial charge in analysis mode and the discharge mode do not slowly reduce current anymore, instead it drops to 0.5A from there sloly reduce current. It looks like the charge failed, there is no CV phase. … [/quote]
It discharged at 1.5A down to 3.35V, reduced ratio to 0.5A, and finished discharge at 3.05V with a slight tapering…
Without charge top-off tests are invalid unless you start with a properly charged cell (at ≈4.2V resting voltage), and since its discharge behaviour is odd I'd definitively mistrust its figures.
Cheers ^:)
Lii-500 goes down to 2.8V, I can say it for sure since it is my analyzing charger. ;-)
Andrew_Debbie is using a ISDT C4, bad stuff. :facepalm:
:-)
I also have an Lii-500. I’ll rerun the Analysis and report back here.
My C4 is running firmware 1.1.0.10. They’ve fixed several problems since HKJ’s review.
The release notes aren’t great….
C4 V1.1.0.10
- Improve lithium battery charging.
C4 V1.1.0.9
- Improved NiZn battery charging algorithm.
C4 V1.1.0.6 - Add detailed information display.
- Add charge current and discharge current setting in analysis and cycle mode.
C4 V1.0.0.15 - Fix the bug of Fan does not stop working when Analysis Done.
- Start the fan when USB high power output.
C4 V1.0.0.14 - Fix the bug of Discharge capacity calculation.
- Modify the discharge temperature detection exception handling.
C4 V1.0.0.11 - Analysis function optimization
- NiMH charge optimization
Yes, my bad. For some reason I thought he had the Lii-500 charger.
I do. I’ll run the analysis again. At the moment the cells are on my desk at work and the Lii-500 is at home.
I don’t want to risk cycling the blue batteries unattened. Will have to wait until I can be around to monitor them. Analsys is going to take a long time at 1A.
FWIW THe gold and black cells all tested to over 5000mAh on my C4. THe blue cells fall well short of that. Even if the cycle is ‘wrong’, I’m testing all the cells on the same cycle.
If I had the money I would get a proper test rig set up. Can’t manage that right now. Especially for 4 batteries I’ll probalby never use or buy again.
If someone needs such a charger that most competently and soundly fills batteries with capacity, then it is better to choose NiteCore D4.
Soon it will be removed from production, so I can advise you to purchase it as soon as possible. It is replaced by chargers with large charging currents, which not only can not fully charge the batteries, but also cause accelerated damage to any batteries. New devices with large currents are also not suitable for the subsequent long-term storage of batteries - they have an accelerated self-discharge. The old Nitecore D4 has unique charging current forms, circuit design which they received from Japan itself. Today, this is already considered an outdated technique, but it is much more efficient and nobler for a gentle charge than current chargers, which have only one goal - to reduce the charge time in any way (mainly for advertising purposes, not the quality and durability of your expensive batteries). Take yourself an inexpensive and cool D4, you can still find the original on sale!
Are you spamming us?
So much of what you said sounds wrong.
I will definitely NOT be buying a D4.
I choose D4 and can recommend it for the reasons given above. Now, if you decide not to choose D4, then I would also like to hear your opinion about this, otherwise spam is your words, not mine :smiling_imp:
There are no “reasons” from you, all what I found is Blah Blah Blah. Really does look like spam.
I do not know where you saw that the D4 was Japanese design or manufacturing, does not insult the Japanese manufacturing quality (which by the way is excellent, see the best in terms of electronics), the design/manufacturing all the products Nitecore is purely Chinese, and in terms of precision: do you want to laugh? I have two of the latest models released by Nitecore, the SC2 and the SC4 (Superb Charger product range), and worse than these chargers I’ve ever seen, let me explain: to start these two charger extremely heat, charging voltages not respected for both (batteries never charged at more than 4.15~4.18v, charge mAh meter (SC4) is totally inaccurate it’s big no matter what (I charged Sony VTC6 with, I I got the results between 1400~2000mAh for charge them : approx. 3.0v to 4.20v (variable as I said before) while I should rather around 2600~2700mAh at least for a charge of this cell model) , on the SC2 as the SC4 there is an unpleasant sizzle noise coming from the internal transformers of the two chargers (a really painful noise) The only thing I agree with you is the fact that the builders of chargers are increasingly opting for fast charging in no way the life of batteries, it’s true and it’s a shame, they should necessarily leave us a feature to choose the amperage load. But personally, I never recommend Nitecore to anyone, even XTAR does better on the electronic side.
Long live to OPUS and SKYRC, chargers that at least they are worth their price.
Where have you seen me offer any other Nitecore, except D4? Only D4 or, as a last resort, D2 deserve respect and positive ratings. Only D4 and D2, so you do not need to mix all the products in one pile. D4 and D2 are based on schemes donated to this Chinese by engineers from one of the Japanese firms (like I have heard from other people for a long time such a fact that the roots of the circuitry of these particular D4s lead to the world-famous company Kawasaki, which also makes military equipment for Japan). All the other Nitecore is junk, which heats the batteries and leads to their rapid deterioration. You can also look at the tests from the master HKJ, which showed a little that during charging the batteries have a rest, during which there is a possibility to cool much better - the cells installed in the slots are always charged in turns.
Also during the charging process, the device’s microcontroller constantly monitors the state of the elements and always adjusts the level of charge current according to their internal resistance, charge level and so on (there are some subtleties that are inaccessible to other chargers and to fully understand many people this is Japanese technology, in other words, from aliens, and not from ordinary people).
http://www.livekuban.ru/upload/iblock/a16/monkeyastronaut.jpg
I ran the test again using my Lii-500.
Cell 1 4632mAh at 500mA discharge
Cell 4 4739mAh at 500mA discharge
Nor Test on 1000mA charging. Nor Test is a discharge test. Setting the Lii-500 to 1000mA discharges the cells at 500mA.
Cell 1 tested as 4651mAh in my C4.
Cell 4 is the only one I haven’t tested in the C4.
I would expect somewhat higher capacities at 500mA discharge than I got from the ISDT-C4 at 1500mA discharge. Is the ISDT-C4 analysis wrong? Maybe, but only by 20mAh. Ambient temperature could be another reason.
Do not buy the Blue “LiitoKala 5100mAh cells.
/\ … Thanks for the update.
The advertisements promise that these elements are suitable for discharge currents up to 20A. Therefore, the cell must cope with currents in the range from 0A to 20A. Purchase just such a special active device (not your Lii-500 or similar primitive control devices), which, with your personal settings for discharge current (A) and voltage threshold for discharge level (V), will easily help you to check any such battery
Does anyone know if this is the same battery that Intl-Outdoor is selling as a package option with the Emisar D4S? Is it a good battery to power the XP-L Hi’s on the D4S?
D4S link
https://intl-outdoor.com/emisar-d4s-26650-high-power-led-flashlight-p-932.html
Thanks!
As long as International Outdoor cares about their products and customers I'd say the cell should be good, a real Power Long Battery cell in optimal condition as HKJ tested.
Can also try elsewhere, FastTech maybe. Or this 192led Shockli 26650 5500mAh sale, they claim the cells to be from the same warehouses as GearBest. Paying with PayPal provides adequate fake protection in any case.
Good luck. :-)
Cheers 
If someone else with real test equiptment wants buy a set of the blue cells and do full set of I-V discharge curves, please do.
I don’t have the money or the time.
Your results are good enough for me. :+1: … Thanks for sharing them. 