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.
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.
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”
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?
I’m no expert, but I ’oogled, and as I understand it, you never get to zero with this chemistry unless you do something like drop the cell into a bucket of salt water and wait a long time. All you need is a slight heat source or tiny spark if the solvent chemicals have leaked, as each battery is made using organic solvents, liquid, in two separate compartments with a very thin membrane in between. Crystals start growing after a while, and grow slowly — and if a crystal punctures the membrane the chemicals mix and heat is released. That’s why you don’t toss these into the ordinary trash — it can take weeks or months before one cooks off.
Oh — and, you’re relying on a good material being used for the membrane.
Just any old thin crap sheet will work for a while, long enough to get the stuff shipped out.
It can, the electric energy is only part of the energy in the cell, the chemicals and other stuff it is made of contains many more times energy. I have seen numbers like: Electric energy 36kJ (10Wh), other stuff: 280kJ (I do not know how precise this number is).