Dolidada cells with low capacity and an inaccurate Zanflare C4

snakebite · 2018-06-01T00:09:41.000Z

from what i see peeking up from the + end those look like the ebl 5000 i got a bunch of.
every one was above 5000 after 2-3 cycles.
but the results with your 30q’s leads me to believe that analyzer is inaccurate.

tatasal · 2018-06-01T00:18:37.000Z

snakebite:

but the results with your 30q’s leads me to believe that analyzer is inaccurate.

That’s my long-time observation too….when I started in this hobby almost 6 years ago, I started out with laptop pulls only, no analyzing chargers then, the reason why I got the iCharger (and the Pila IBC and Maha C9000) at that time.

I remember that the only time a cell rating had actually reach or exceed by a bit its mAh rating on the lable from reputable manufacturer is when I set my iCharger to discharge down to 2.50V.

Barkuti · 2018-06-01T00:51:18.000Z

Innacurate cheap analyzing chargers? Welcome to the real world fellows. The current sense resistors used by these devices feature 1% tolerance, let's just start with this, and there are more variables over the table. I believe my Lii-500 measures close to 2% less, based on my observations for various cells.

Cheers :-)

Lux-Perpetua · 2018-06-15T11:38:08.000Z

I wrote an honest review about the Zanflare C4 on Gearbest’s website. After that, their customer service team contacted me in order to solve the issues I have with my device. I explained in detail about the high deviations concerning the capacity measurement incl. the fact that charging slot #2 always indicates much more than the other slots.

So…eventually, this is what Gearbest calls “problem solution”. Thank you very much! :person_facepalming:

Dear Thomas，

Thank you for your patiencer.

This charger comes with a volume detection function. Voltage accuracy deviation 2; Current accuracy deviation 5; Time accuracy deviation 1. The capacity is tested by charging voltage, current, and time calculations. Due to the fact that it is not a special compartment, the current market can only achieve a 10 accuracy deviation.

The use of interference Including factors: such as the ambient temperature, humidity, battery type, if the battery installed contacts are good or not and so on. For example, if use different brands of the sub-capacity tester to test, there will be some deviations.

Thank you for your understanding.

Best Regards
*
Gearbest Customer Service
http://www.gearbest.com/
————————————————————————-

ifratos · 2018-06-15T11:46:30.000Z

Received my 5 Dolidada’s looks very nice , firsts two of them is allready in my Lii-500 for test.

teacher · 2018-06-15T12:15:42.000Z

Sting…… this is one of my all time favorites by him!!
.

.
No battery, charger, or light content whatsoever.

But fond memories………

Lux-Perpetua · 2018-06-15T12:23:02.000Z

Well…talking about having faith in Zanflare’s C4 I’d rather listen to this today…

tatasal · 2018-06-15T12:25:31.000Z

Excellent choice from Sting’s collection! Enjoying it now….

teacher · 2018-06-15T12:59:43.000Z

/\ … :+1:

ifratos · 2018-06-16T15:27:01.000Z

My results:

Opened dispute!!!

Lux-Perpetua · 2018-06-16T17:02:36.000Z

ifratos:

My results:

Opened dispute!!!

Please keep us updated about the dispute. I assume voltage will drop significantly when you use 10 or 15 amps on these cells.

ssschen · 2018-08-09T16:11:42.000Z

Just sharing the tested capacities on the 5x Dolidada 26650 batteries I bought a few months ago from this AX listing. I thought US$19.xx for 5x 26650 batteries is a very good price at the time.

These were all tested using 0.5A on a Zanflare C4 when I first received these batteries in late May 2018. I was initially quite disappointed with these results, as there were reports these batteries had measured capacities closer to 6000mAh.

Battery #1 & 2

Battery #3 & 4

Battery #5

ssschen · 2018-08-09T16:12:05.000Z

I repeated the same measurement (0.5A) on my Liitokala Lii-500, which yielded even lower capacities!!

Battery #1

Battery #2

Battery #3

Battery #4

Battery #5

Barkuti · 2018-08-09T17:20:05.000Z

Bad, quite bad Dolidada.

I recently discovered that my Lii-500, on the other hand, is quite accurate with regards to capacity testing:

As things are now, it seems like the available production of PLB 5500mAh cells is not being used by Dolidada, LiitoKala or whatever cheapass rewrapper.

^:)

ssschen · 2018-08-09T17:35:29.000Z

Barkuti:

Bad, quite bad Dolidada.

I recently discovered that my Lii-500, on the other hand, is quite accurate with regards to capacity testing:

As things are now, it seems like the available production of PLB 5500mAh cells is not being used by Dolidada, LiitoKala or whatever cheapass rewrapper.

Any reason why the end voltages are 3.17V and 3.21V, as opposed to 4.2V?

Pete7874 · 2018-08-09T17:41:05.000Z

ssschen:

Any reason why the end voltages are 3.17V and 3.21V, as opposed to 4.2V?

The cells were likely still being charged back up when he took the photo.

Barkuti · 2018-08-09T19:29:18.000Z

The Lii-500 discharge cut-off voltage is 2.8V. Besides this, what Pete7874 said.

^:)

ifratos · 2018-08-09T20:00:25.000Z

Lux-Perpetua:

ifratos:

My results:

Opened dispute!!!

Please keep us updated about the dispute. I assume voltage will drop significantly when you use 10 or 15 amps on these cells.

I lost the dispute,
Alie judge ask for video ,Lii-500 pictures was not enough.
They offer resend and full refund but in that case the cost of the post would have been to high for me ,so I choose to keep the batteries.

Lux-Perpetua · 2018-08-09T20:35:06.000Z

Thanks for the update ifratos. The seller of my Dolidadas seems to be gone after more and more customers submitted their bad feedback.

Barkuti · 2018-08-09T21:26:49.000Z

I've won 3 out 3 battery related disputes, and I'm done (for now). Never lose faith, ifratos. You can ask for assistance here, and you can receive wise advice with regards to these things.

In order to win your dispute, I would have filed for “product not as described”. Then, I'd have submitted Lii-500 capacity discharge tests. This is enough, in my experience. But you need to make clear pictures. For example:

For this comparison I made use of a couple brand new 25R cells I bought. After all, since I was going to overhaul an electric screwdriver I needed the real deal.

In your case those Dolidadas weren't meeting the specified capacity by a long shot. It would have been easy for me. Never lose faith my dears!

Cheers :-)