July 2009
13 posts
Battery Authentication for Portable Power Supplies
Battery authentication for portable power-supply systems is a growing trend, in part due to the recent increase in personal injuries related to the improper charge profile of counterfeit rechargeable apple laptop battery. Additionally, ensuring the marketing of safe, rechargeable battery-powered systems is a growing concern for many government agencies, so electronics manufacturers must now ensure...
The Lithium Battery
Pioneer work with the lithium battery began in 1912 under G.N.?Lewis but it was not until the early 1970s that the first non-rechargeable lithium batteries became commercially available. Attempts to develop rechargeable lithium batteries followed in the 1980s, but failed due to safety problems.
Lithium is the lightest of all metals, has the greatest electrochemical potential and provides the...
An overview of laptop battery technology
Most laptops now use lithium ion (LiIon) batteries. LiIons should be managed differently from the NiCad or NiMH batteries used in older laptops. In particular, LiIons should not be run all the way down to prevent “memory effect”. First, they don’t have a memory effect, and second, running them down tends to reduce their capacity. If the laptop does not need the battery it should...
Batteries For A Notebook Computer
Batteries for a notebook computer are an important ‘extra’ to have on hand, but they are easily obtained at a local electronics store or on one’s PC, through any number of suppliers who will sell them at a reduced rate. Batteries for a notebook can be recharged, and need to be recharged regularly. While batteries for a tape recorder can be expected to last for many hours, those...
Rapid-testing of batteries
When studying the characteristics relating to battery state-of-health (SoH) and state-of-charge (SoC), some interesting and disturbing effects can be observed - the properties are cumbersome and not linear. Worst of all, the parameters are unique for every battery type. This inherent complexity makes it difficult to create a formula for rapid testing that works for all batteries. In spite of...
What's the best battery for two-way radios?
Most two-way radios use nickel-cadmium. These batteries are durable and forgiving if abused. But nickel-cadmium batteries have only moderate energy density and are environmentally unfriendly. Environmental agencies have been discouraging its use, especially in Europe. The recommended alternative is nickel-metal-hydride, a battery that has higher energy density and contains no toxic metals....
How to prolong lithium-based batteries
Battery research is focusing heavily on lithium chemistries, so much so that one could presume that all portable devices will be powered with lithium-ion batteries in the future. In many ways, lithium-ion is superior to nickel and lead-based chemistries and the applications for lithium-ion batteries are growing as a result.
A lithium-ion battery provides 300-500 discharge/charge cycles. The...
Hitachi to raise lithium-ion battery output...
July 2 (Reuters) - Hitachi Ltd, Japan’s biggest industrial electronics group, plans to boost production capacity for lithium-ion batteries for hybrid cars at an estimated cost of 20-30 billion yen, targeting a 70-fold increase by 2015, the Nikkei business daily said.
Capacity will initially be raised more than 600 percent by next autumn, the paper said it learnt on Wednesday.
Hitachi has...
IBM has a new progress on battery
IBM is to develop a next-generation rechargeable battery, capable of storing 10 times more energy than today’s top lithium ion batteries. The new batteries could be used to power cars and smart energy grids, according to IBM. The company will reveal details of the batteries at its Almaden Institute 2009 conference, which IBM said attracts “innovative thinkers” from...
3GS Battery Life Has Been Complained By Customers
Nobody’s perfect, not even the iPhone 3GS. While it may have a faster processor, more features, and a bigger app store than most other smartphones on the market, it still has one big weakness: battery life. Issues with battery life are pretty much inherent to the idea of a smartphone. Web browsing, MP3 playing, video streaming, playing games and even the occasional phone call all take a toll...
Tim dynamism of technological innovation by...
February 13, reporters from the Weihai Fumitaka Battery Co., Ltd. was informed that orders placed this year in August, and with external equipment, funds and human resources, increase the production of adequate horsepower VRLA batteries and other products. Company told reporters that they seize the opportunity of expanding domestic demand, do a good job in the technical innovation, product...
Peak Group: poised to take off the power battery
High market turbulence, the market hot spots scattered, venture capital, medicine, new energy and the reorganization shares strong trend, as the IPO gate opening,laptop battery,venture shares will be subject repeatedly strengthened, so as a major theme of the 3 groups of peak 〔Unit Let market〕 (600,668), is poised to take their full attention.
First, an unprecedented opportunity to cement the...
Car giant scramble competition for power battery...
New energy automotive industry in recent years as hot spots, and no economic “cold Winter ” and not pre-shrunk. In the just concluded “2009 North American International Auto Show”, the hybrid or pure electric cars is a new town. As we all know, no matter whether it is hybrid, pure electric, or fuel cell-powered vehicles of new energy sources, they require a greater battery...