Test/review of UltraFire BRC26650 7800mAh (Red)

9 posts / 0 new
Last post
HKJ
HKJ's picture
Offline
Last seen: 9 hours 10 min ago
Joined: 05/24/2011 - 12:23
Posts: 7451
Location: Copenhagen, Denmark
Test/review of UltraFire BRC26650 7800mAh (Red)

UltraFire BRC26650 7800mAh (Red)
DSC_8596
Official specifications:


  • Model: 26650
  • Type: Rechargeable Li-lithium battery
  • Capacity: 7800mAh
  • Voltage: 3.7V
  • Max Continuous Discharge: 8A
  • Max Peak Discharge: 4A    Something is wrong with Peak/Continuous rating
  • Size: about 66*25*25mm
  • Color: Purple

UltraFire%20BRC26650%207800mAh%20(Red)-info
Cheap super high capacity 26650, it is barely necessary to test to give a correct conclusion.
DSC_8595
DSC_8597 DSC_8598
DSC_8599
DSC_8600
UltraFire%20BRC26650%207800mAh%20(Red)-Capacity
The two cells I tested have different capacity, the best can reach 2300mAh at 0.2A. They can barely deliver 7A.
UltraFire%20BRC26650%207800mAh%20(Red)-Temp-5.0
UltraFire%20BRC26650%207800mAh%20(Red)-Temp-7.0
Even at maximum load the temperature is not that bad.
UltraFire%20BRC26650%207800mAh%20(Red)-CapacityTimeHours
UltraFire%20BRC26650%207800mAh%20(Red)-CapacityTime
UltraFire%20BRC26650%207800mAh%20(Red)-Energy
UltraFire%20BRC26650%207800mAh%20(Red)-PowerLoadTime
UltraFire%20BRC26650%207800mAh%20(Red)-TripCurrent
UltraFire%20BRC26650%207800mAh%20(Red)-Charge
Conclusion
Different capacity for the two cells, below 1/3 the rated capacity, problems delivering rated current, it is bad cells.
Notes and links
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
Compare to 18650 and other batteries
Compare to 26650 and other batteries
Batteries with ridiculous ratings

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

flydiver
Offline
Last seen: 3 hours 41 min ago
Joined: 06/19/2013 - 19:16
Posts: 1321
Location: Seattle, WA

Ultrafire is a joke. Uninformed consumers are the butt of those jokes.

To Air is Human, to Respire….Divine.

Henk4U2
Henk4U2's picture
Offline
Last seen: 1 hour 50 min ago
Joined: 02/13/2014 - 17:52
Posts: 4223
Location: The heart of the Netherlands (GMT+1)

“You can fool all of the people some of the time and some of the people all of the time,
but you cannot fool all of the people all of the time.”
Seems that the XXX-Fire companies are focussed on doing the first.
There is always a fresh group of customers that thinks those wrappers tell the truth.

HKJ thanks for proving your idea was right, though is does not always make you happy.

You are a flashaholic if you are forced to come out of the closet, to make room for more flashlights.

Barkuti
Barkuti's picture
Offline
Last seen: 1 hour 44 min ago
Joined: 02/19/2014 - 14:46
Posts: 5589
Location: Alhama de Murcia, Spain

Henk4U2 wrote:

HKJ thanks for proving your idea was right, though is does not always make you happy.

I am always happy to show the world my findings. 

 

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

Keanu Reeves may need your help. Join his Telegram channel here.

MRsDNF
MRsDNF's picture
Offline
Last seen: 5 months 1 week ago
Joined: 12/22/2011 - 21:18
Posts: 13473
Location: A light beam away from the missus in the land of Aus.
Smile Thumbs Up

 

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.

 

Shadowww
Offline
Last seen: 7 hours 55 min ago
Joined: 01/20/2012 - 19:09
Posts: 1343
Location: Northern Europe

Yay, they started making explosives in bigger sizes!

Barkuti
Barkuti's picture
Offline
Last seen: 1 hour 44 min ago
Joined: 02/19/2014 - 14:46
Posts: 5589
Location: Alhama de Murcia, Spain

On the other hand, just noticed the battery is claimed as “protected” on the wrapper.

Random low cost cell + random flashy wrapper = finished product. 

 

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

Keanu Reeves may need your help. Join his Telegram channel here.

HKJ
HKJ's picture
Offline
Last seen: 9 hours 10 min ago
Joined: 05/24/2011 - 12:23
Posts: 7451
Location: Copenhagen, Denmark
Barkuti wrote:

On the other hand, just noticed the battery is claimed as “protected” on the wrapper.

That is the standard wrapper for ultrafire cells (Protected or not). I do address it in the article linked at the bottom.

There is also the detail that it is the (non existing) PCB that will last 10 years, not the battery.

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

Milan
Offline
Last seen: 1 week 2 days ago
Joined: 05/08/2012 - 12:13
Posts: 310
Location: Czech Republic

This must be premium batch, mine topped at 600mAh.