AAPL Stock: 119.07 ( + 1.26 )

Printed from

Panasonic outs new, safer batteries for notebooks

updated 05:05 pm EST, Mon December 21, 2009

Panasonic outs safer notebook batteries

Panasonic recently began mass producing high-capacity 3.1Ah lithium ion batteries for notebook computers that are noteworthy for their higher levels of safety and high capacity. The design, known as 18650, has an insulating metal oxide layer between the positive and negative electrodes Panasonic calls Heat Resistance Layer that adds no added bulk to the battery but prevents the battery from overheating and catching fire, even if a short circuit occurs.

The battery also has a positive electrode made of nickel and an energy density of 675Wh/L. Another advantage of the new design includes increases in durability and charge retention, allowing the batteries to be stored for extended periods of time thanks to its low self-discharge properties. In contrast, current modern lithium ion batteries for notebooks produce about 2.9Ah of power.

It is not yet known when these new batteries from Panasonic will begin showing up in consumer electronic devices, however. Panasonic makes its own portable devices but is expected to sell batteries to other companies. [via FarEastGizmos]

by MacNN Staff



  1. BelugaShark

    Joined: Dec 1969


    comment title

    " energy density of 675Wh/L."
    - Compared to what?

    "In contrast, current modern lithium ion batteries for notebooks produce about 2.9Ah of power."
    - In contrast to what?

Login Here

Not a member of the MacNN forums? Register now for free.


Network Headlines

Follow us on Facebook


Most Popular


Recent Reviews

Ultimate Ears Megaboom Bluetooth Speaker

Ultimate Ears (now owned by Logitech) has found great success in the marketplace with its "Boom" series of Bluetooth speakers, a mod ...

Kinivo URBN Premium Bluetooth Headphones

We love music, and we're willing to bet that you do, too. If you're like us, you probably spend a good portion of your time wearing ...

Jamstik+ MIDI Controller

For a long time the MIDI world has been dominated by keyboard-inspired controllers. Times are changing however, and we are slowly star ...


Most Commented