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AAAAAAAAA-size Li-Ion Cells

Posted by timothy on from the batteries-make-the-world-go-round dept.

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."

2 of 124 comments (clear)

  1. Re:Uh... by Spy+Hunter · · Score: 5, Insightful

    The problem is that batteries can't be recharged in 10 seconds. Tanks can be filled that fast. My battery dying wouldn't be nearly as big a problem if I could recharge it in 10 seconds. Plus, if fuel cells became popular, the fuel would quickly become available everywhere.

    --
    main(c,r){for(r=32;r;) printf(++c>31?c=!r--,"\n":c<r?" ":~c&r?" `":" #");}
  2. Re:Speaking of battery size ... by mythosaz · · Score: 5, Insightful

    A batteries? In what alternative universe did you guys find A batteries? Virtually no one makes them today, or B batteries either. The letters are part of a standard for single-cell batteries devised by the American National Standards Institute, or ANSI, beginning in the 1920s. (I realize that, strictly speaking, a battery consists of two or more cells, but let's not get picky.) Today the standard sizes range from AAAA to G, and for some reason there's also J, N, and 6. AAA, AA, C, and D were the only sizes that caught on in a big way commercially, but the others haven't totally disappeared. If you pry apart one of those big 6-volt lantern batteries, you'll find four F cells inside.

    http://www.batteryholders.com/ansiref.shtml