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"IEEE Standard for Rechargeable Batteries for Portable Computing" gets update due to laptop fires

The IEEE will revise its laptop battery standard, coded IEEE 1625, which was approved back in 2004 as part of the "Livium" family of battery standards. The revised standard seeks to improve overall performance, make systems more reliable and address concerns over the recent laptop battery fiasco.

IEEE 1625 adopts a systems approach by addressing the battery envelope from cells to the mobile computers they power, both alone and in concert. It encompasses such areas as battery pack electrical and mechanical construction, cell chemistries, packaging, pack and cell controls, and overall system considerations. 

In revising IEEE 1625 to further safeguard the reliability of these batteries, we will leverage the streamlined corporate standards process and incorporate lessons learned in developing the IEEE 1725 standard for cellular telephone batteries, says Edward Rashba, Manager, New Technical Programs at the IEEE-SA. We have an opportunity to further strengthen the Livium portfolio, which already incorporates hundreds of man-hours of technical work and represents consensus views on best practices from leading industry experts.

The update looks to guide the industry in planning and implementing controls for battery design and manufacture. It also defines approaches for evaluating and qualifying such batteries, verifying their quality and reliability, and educating and communicating with end users.

The 1625 update will be a global effort, says Rashba. The leading laptop OEMs and battery manufacturers such as Apple, Dell, Gateway, Hewlett-Packard, IBM, Lenovo, Panasonic, Sanyo, Intel and Sony have indicated strong interest to participate.

The group will meet bi-monthly in the U.S. and Asia, with project completion expected within 18 months. The first working group meeting is scheduled for November 15-16 at the Intel in Santa Clara, California. A follow-on meeting is planned in Japan for January 16-18 of next year.



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RE: Lithium
By JeffDM on 11/10/2006 12:34:49 PM , Rating: 2
Don't confuse the properties of the metal with compounds containing the metal. The properties often have little in common.

Lithium ion batteries can explode because they store an immense amount of chemical energy in a very compact package. They can explode when discharging too quickly, when overcharged. That's why you don't want to deal with shady manufacturers, there needs to be limiting circuitry.

They can also explode when stored above a safe temperature too, which is occasionally achievable in a car in the summer sun.


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