Slashdot Mirror
AAAAAAAAA-size Li-Ion Cells
Jasin Natael writes "Thought Li-Ion batteries were all the same? Think again. Several universities, under a grant from the US Office of Naval Research, are
miniaturizing the anodes and cathodes of Li-Ion batteries to nanoscale, hoping to make more efficient, smaller cells that last longer."
Captain, we need to find more Dilithium Crystals to power the warp core reactor! We don't have above impluse power without them!
Tibbon
tibbon.com
The smallest amount of a physical quantity that can exist independently, especially a discrete quantity of electromagnetic radiation.
in this sense means 'to another level'.
This is a constant, dependant on the substance used in the battery. They may get 10 percent more watt hours in this battery. Peak current should be better, due to larger surface area of the anode/cathode. Lithium Polymer batteries have a higher energy density BTW.
The law is a weapon of the government, not a protection for the likes of you. Surely you understand that.
We're talking energy density here; ;)
ie, one could have a smaller battery with a higher energy density compared with today's batteries, or we could keep the size of today's batteries, and just increase the density, and therby increase the life of it. Geddit
(Sorry about the double post)
The model of most cell phones can be determined by removing the battery and looking inside the battery compartment. There should be a white sticker with various information like ESN, serial, Maker, Model, ect.
not exsactly true. While normaly you charge batteries slowly you can charge them very fast in some applcations. Take EV's and HEV's while it would take many hours to charge their battery packs through a charger they charge their batteries very quickly when doing things like regenerative braking (as in charge a huge battery pack in seconds). In a HEV's I work on we can only do so much regen do to the size of the battery pack, they can take the charge quiet fast (though there is a limit) the big problem is running out of space (as in energy storage) to quick. But any charging cycle slowly kills batteries. The severity only ajust the time line. This is where ultra capacitors will begin to come into play.
They used to, a hundred years ago. The B battery in a tube radio was the plate voltage, around 200V or more. This is why to this day you can still find people who will call the main supply in an amplifier the B+ or the B supply.
Of course these batteries were large and complex, and where replaced by transformer supplies as soon as electrification of households was popular enough.
"A" batteries were filament batteries, at 6.3V, for the tube heaters (you know those tubes that glow? You gotta heat em up to get that glow).