Following is a summary of the characteristics of popular battery technologies. For more details, see lead acid, nickel cadmium, nickel metal hydride, lithium ion, lithium polymer, zinc air, CMOS battery and memory effect.
A Whole Lotta Batteries
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.
CHARACTERISTICS OF RECHARGEABLE BATTERIES
Recharge Fast Self
Energy Cycles Charge Discharge
Density To 80% Time Per
(Wh/Kg)* Capacity (hours) Month
Nickel
Cadmium 45-80 1500 1 20%
Nickel
Metal
Hydride 60-120 300-500 2-4 30%
Lithium
Ion 110-160 300-500 2-4 10%
Lithium
Polymer 100-130 300-500 2-4 10%
Lead Acid 30-50 200-300 8-16 5%
To 50%
Capacity
Reusable
Alkaline 80 50 2-3 0.3%
This data are provided courtesy of
Cadex Electronics Inc. (www.cadex.com).
* Wh/Kg = watt hours per kilogram
A Whole Lotta Batteries
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.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2009 The Computer Language Company Inc. All rights reserved. |
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