Test/Review of UltraFire BRC26650 7300mAh (Gray)

HKJ · Nov 29, 2014

[size=+3]UltraFire BRC26650 7300mAh (Gray)[/size]

Official specifications:

This cell is specified with record capacity, but the measurements does not confirm this.

The real capacity is about 2500mAh and the two cells do not track very well when current is above 3A.

[size=+3]Conclusion[/size]

The cell is sold with wrong specifications, the performance is very bad and the wrapper lies about protection.
I will call this a bad cell.

[size=+3]Notes and links[/size]

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

Mr. Tone · Nov 29, 2014

This isn't surprising, but it is shameful to be so misleading.

SubLGT · Nov 29, 2014

UltraFire batteries seem to be amazingly popular, despite their serious shortcomings. They are a triumph of marketing.

NoNotAgain · Nov 29, 2014

SubLGT said:
UltraFire batteries seem to be amazingly popular, despite their serious shortcomings. They are a triumph of marketing.

Only to first time buyers. Once you get stung, in most cases you don't repeat the same mistake.

candle lamp · Dec 1, 2014

Thank you for your excellent and informative test review. HKJ! :thumbsup:

I'm wondering how many more years they will keep doing that. :thinking:

HKJ · Dec 1, 2014

candle lamp said:
I'm wondering how many more years they will keep doing that. :thinking:

As long as there are lots of customers why stop?
Try checking ebay for "Trustfire 18650" and see how many are sold on each auction.

candle lamp · Dec 1, 2014

HKJ said:
As long as there are lots of customers why stop?
Try checking ebay for "Trustfire 18650" and see how many are sold on each auction.

I can't believe that there are so many. :ohgeez: