I already advised peoples stay away from any Ultrafire batteries many years ago. They are extremely dangerous!
Unfortunately I lost the link for how these batteries exploded & this guy went to ER eventually!
I found the link: http://www.candlepowerforums.com/vb/showthread.php?280909-Ultrafire-18650-3000mA-exploded
I sure hope someone at Tesla sees this. They can cut-down on the number of cells they need by 1/3. I bet it also sags less and has a longer cycle life. I see on one site that 9 sucker buyers have already jumped on it.
Can someone explain to me how they do this to people they do not even know? What kind of people are these? Its quite disturbing.
There is a very small decimal point ..... you just have to look very very closely
980.0 mAh
98.00 mAh
9.800 mAh
.9800 mAh
?????
Awesome review! I’m happy I never wasted any money on these cells because I spent a lot of time on this forum before spending any money on 18650’s.
Thanks for the review. Does anyone know what BRC stands for?
Wow. Perhaps the Energizer Bunny is a member.
Yes, the last. It also has another typo, it must be μAh… 
BRC stands for anything you’d like it to mean really, since the entire wrapper is nonsensical: it does not really pertain to the battery inside at all, its just a wrapper purchased in mass quantities and shrinkwrapped over old cells or phoney cells with a capacitor in them in some cases.
I like to say it stands for “Brick” though: not only are they really bad capacity and cant deliver much current, but they also fail quickly and you get really few recharges before the dropoff in capacity renders them useless…when you buy these they’ll be bricks soon enough.
Bad, Rubbish & Crappy?
Buy, Regret, Cry?
Lol cells Bad as in can explode if you use it?
Thanks HKJ for the review!
I have look at a LOT of your reviews , and they are very useful & informative
Tossed it where?? and when??
It takes a while — weeks or months — before crystals grow large enough that there’s a risk they’ll puncture the internal membrane.
Want a long academic piece on the details of disassembly and testing of components of li-ion cells?
Here’s one: http://drum.lib.umd.edu/bitstream/1903/12381/1/Williard_umd_0117N_12841.pdf
Our company has a container for battery disposal, which is where he put them. It’s picked up along with our used desktops, laptops, and other hardware. After that I have no idea what happens to the stuff. I suppose it’s possible that the batteries will come back as “ultrafires” 
I always thought BRC was a Chinese acronym for “mini exploding hand grenade”.
Someone correct me if I’m wrong, but I am guessing that when a cell vents or explodes, it is all the energy stored in the cell when it is charged up. All of that stored energy is released suddenly and it could be argued that the UltraFires are safer because they don’t store as much energy!
(A safety feature) 
In other words, can a discharged cell vent or explode? Where would the energy come from?