Definition: batteries

Following is a summary of the energy density and charging characteristics of current battery technologies. For more details, see solid state battery, sodium-ion battery, aluminum-ion battery, lead acid, nickel cadmium, nickel metal hydride, lithium-ion battery, lithium polymer, liquid metal battery, zinc air, CMOS battery, aluminum-ion battery and memory effect.

  RECHARGEABLE BATTERIES

                  Energy        Fast
                  Density      Charge
  Type            (Wh/Kg)*    (Min/Hrs)


  Aluminum-Ion    600-1000      10M

  Sodium-Ion      100-200       5-10M

  Lithium-Ion      50-300     20M-1H

  Solid State     250-500       5-18M

  Nickel Cadmium   45-80        1H

  Nickel Metal
    Hydride        60-120       2-4H

  Lithium
   Polymer        100-130       2-4H

  Lead Acid        30-50        8-16H

  Reusable
   Alkaline        80           2-3H


  * Wh/Kg = watt hours per kilogram

A Ton of Batteries for One Minute

This roomful of lead acid batteries stands ready to drain itself entirely in less than a minute. It serves as interim power for a large datacenter between the time a power outage has been detected and the generators can come up to full speed.

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Definition: batteries