NEC develops smaller, lighter battery

The new cells use a manganese laminate to replace the iron or aluminium commonly used in battery casing, the company said in a statement. It dissipates heat as well as the bulkier metal casings and helps the company increase the energy density of batteries by 25 percent to 150Wh/kg (watt hours per kilogram).

The new casing is being used first in a family of three batteries for cellular telephones and PDAs (personal digital assistants) -- both devices for which designers are constantly striving to reduce volume and weight.

In addition to the new case, the batteries also employ an NEC-developed proprietary manganate spinel cathode material -- a crystal structure that offers greater safety when batteries are accidentally overcharged, over discharged or when current limits are exceeded.

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Martyn Williams

PC World

Comments

Comments are now closed.

Most Popular Reviews

Follow Us

Best Deals on GoodGearGuide

Shopping.com

Latest News Articles

Resources

GGG Evaluation Team

Kathy Cassidy

STYLISTIC Q702

First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.

Anthony Grifoni

STYLISTIC Q572

For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.

Steph Mundell

LIFEBOOK UH574

The Fujitsu LifeBook UH574 allowed for great mobility without being obnoxiously heavy or clunky. Its twelve hours of battery life did not disappoint.

Andrew Mitsi

STYLISTIC Q702

The screen was particularly good. It is bright and visible from most angles, however heat is an issue, particularly around the Windows button on the front, and on the back where the battery housing is located.

Simon Harriott

STYLISTIC Q702

My first impression after unboxing the Q702 is that it is a nice looking unit. Styling is somewhat minimalist but very effective. The tablet part, once detached, has a nice weight, and no buttons or switches are located in awkward or intrusive positions.

Latest Jobs

Shopping.com

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?