China batterie 18650 test - 508.800mAh in 62 cells

[Stefanseiner]

hope you left detailed negative feedback wherever you bought these.

Yes I did so. And I added a picture of the capacity test of the LiitoKaala to proof it for other customers.

Additionally I got the money back for all of the batteries. Most of the sellers even didn't disagree that the capacity is wrong.
But the seller of the "Dolidada" 15.000mAh argued, that I did the test wrong and his batteries do have the specified capacity.
I told him to show me a proof of any testing method he prefers and without photoshopping.
No answer - money back :sleepy:


Then I though about what todo with these cells now.
Recycling? Somehow a little too bad.
Selling again? But they are scam.

So I decided to sell them on eBay with detailled results from my test just to warn people.

I bought the batteries about a month ago, along with other models, and tested them.
Since I no longer need them, I sell them again.

Manufacturer / type: Ultrafire SJ 18650
Capacity according to the manufacturer: 6,000mAh
Working voltage: 3.70V nominal
Charging voltage: 4.20V maximum
Discharge current: 3.3A
Dimensions: 18.2x65.1 mm
Weight: approx. 35 g
Protection circuits / protected: no

Danger:
the printed manufacturer information is greatly exaggerated and does not correspond to the values that I have determined.
A LiitoKala Lii500 Engineer was used for the capacity test with the standard settings of the "normal test" of 1.0A charge current / 0.5A discharge current.

You can find information on the measured capacity in the pictures.
On request, I can also send you the link to the detailed test including evaluation and videos.


Make an offer only if you are in agreement with it.

I set the price very high so no one would buy them and the auction will last very long and many people can read this.
example on eBay: 8x 6000mAh Ultrafire SJ 18650

 

[kc8adu]

good one!
probably lost in the ebay sea of trash but got to start somewhere.
i like the organized purchase,test,refund,and nuke their feedback scores approach.

 

[Stefanseiner]

i often thought of getting a bunch of folks together to purchase,test,and neg these junk sellers on ebay.

I would support such a "mass test"

 

[Larener]

Oh my!
Thank you for such a detailed review.
I think I need to save this post. I will need some powerful batteries for my new light. So, this info is exactly what I need.

 

[Overmind]

Found an ultrafire fake in a flashlight pack that actually had above 1000mAh. That's a record.

 

[daromer]

Back in the day. I say 10 years ago? The ultrafire among others actually was ok. I had several with above 2Ah. They were 2nd hand already or what not and not 4Ah but they were actually pretty decent. Then it went down

 

[Overmind]

Yes, older ones were better. Now-days they are ultrafake, ultralight. Good for various other experiments though.

 

[OffGridInTheCity]

My very first 18650 purchase was UltraFire 5000mah cells on Oct 8, 2017. These actually had ~ 1100mah/cell.

 

[OffGridInTheCity]

Just saw this on ebay... UltraFire is still at it??? - https://www.ebay.com/itm/2-10PCS-Ba...rand=UltraFire&_trksid=p2047675.c100010.m2109

 

[TheBatteries]

Just saw this on ebay... UltraFire is still at it???

I love how they left out the word "18650" to bypass the filters that are blocking those listings now lol

 

[hbpowerwall]

Classy...