Test/Review of UltraFire TR18650 5000mAh (Blue)

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HKJ
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Test/Review of UltraFire TR18650 5000mAh (Blue)
UltraFire TR18650 5000mAh (Blue)

Why buy expensive 3400mAh cells when you can get 5000mAh cells much cheaper? I believe this test answers that question.

DSC_5402

Official specifications:
  • 100% brand new 2x 18650 3.7V Li-ion 5000mAh UltraFire rechargeable batteries
  • Perfect for Flashlight, Rc toy or electronic gadgets
  • 100% QC of every battery
  • Capacity: 5000mAh
  • Voltage: 3.7V
  • Chemistry: Li-ion
  • Recharge: up to 1000 cycles

UltraFire%20TR18650%205000mAh%20(Blue)-info

The cell does not live up to its rated capacity, it is only about 1000mAh and cannot deliver high current.

DSC_5400 DSC_5401

DSC_5403 DSC_5404
The button top looks nice, but is missing the vent holes.

DSC_5405
DSC_5406
DSC_5407
The battery was not sold as a protected battery, but the wrapper says it has protection (It does not have protection).

UltraFire%20TR18650%205000mAh%20(Blue)-Capacity

The capacity is not the same between the cells and it starts to lose capacity at 2A to 3A.

UltraFire%20TR18650%205000mAh%20(Blue)-CapacityTimeHours

UltraFire%20TR18650%205000mAh%20(Blue)-CapacityTime

UltraFire%20TR18650%205000mAh%20(Blue)-Energy

UltraFire%20TR18650%205000mAh%20(Blue)-PowerLoadTime

UltraFire%20TR18650%205000mAh%20(Blue)-TripCurrent

UltraFire%20TR18650%205000mAh%20(Blue)-Charge



Conclusion

They capacity is way lower then any normal cell and it cannot deliver much current. I wonder if the missing vent holes are because the internal cell protection (PTC & CID) is missing?

This is what I call a bad cell.



Notes and links

This cell is sold in many colors, where I bought it the actual color is random.

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

RaceR86
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haha..

Thanks for the laugh.. or maybe I should cry.  Big Smile

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djozz
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Wow, they are much worse even than I expected! Thanks for the reveal.

Chloe
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Oh dear! :~ Thank you for testing these.

unknown00101
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I threw up in my mouth a little bit. :Sp

Chazzy
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Ohh man… maybe another color may add 5000mAh J)

"Whoa that's a bright light!" ... Yea I guess.

Hikelite
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djozz wrote:

Wow, they are much worse even than I expected! Thanks for the reveal.

http://budgetlightforum.com/node/27603

Ledsmoke
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Great idea to test these. Thank you for taking the time and making the effort.

~ Ledsmoke ~

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[quote=djozz]

 I do not think that the BLF-community ben

FlashPilot
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Oh no! But dont these say 5000mAh right on the side of the cells? I bet its your test equipment or procedures that must be waaaaay off. Yeah, thats what it is. Big Smile

WarHawk-AVG
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Hahahah…proof is in the pudding

Great review as always HKJ…and once again the Chinese mAh just ain’t what they are cracked up to be Big Smile

MRsDNF
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Thanks HKJ. Your writing in red sums this up perfectly with a warning to unsuspecting punters.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

Pulsar13
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I actually laughed reading the title and realizing the reviewer.

Any links? I need 10 to give to my enemies. Silly