Acer Laptop Batteries Review and News

Mac OS x 10.5 Leopard e-book

The new operating system Mac OS x 10.5 Leopard is more than just an update of the operating system: With this update, your Mac can much more: At 446 pages, the changes will be presented in detail and explain all the details. Starting with the installation of the system via hardware requirements right through to solving problems encountered in conflict - the eBook covers all areas.

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Complete eBook on DownloadAls computer inside you get every month, two new interesting e-books for download. Invite now this 496-pages long e-book “Mac OS x 10.5 Leopard,” down or follow the link below for the second e-book available this month. Another e-book in August: The Excel SparbuchDie complete ubersichtDer Guide has a detailed table of contents, so you quickly find the appropriate solutions. Here all conceivable aspects of the operating system are covered: Whether it was the normal system operation, multi-media applications such as iTunes or benchmarking programs to test the performance of your Mac and improve. Image ErlauterungenDamit the kingdom, you can follow instructions better, the sides are provided with many examples and pictures that explain the procedure in detail. So you can start directly with a simple way into the depths of the system.

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Makings of a legend?

The HTC Legend has won the place of the current best Android phones in the ranking. Despite the somewhat weaker equipment, the Legend can defeat even the much-praised Nexus One - why, you betrayed our test.

HTC Legend: Currently best Google phone.

The Legend is the official descendant of the successful HTC Hero. With the latest version of Android 2.1, an improved display and much more noble outfit takes the legend in the footsteps of the hero and joins in the ranking significantly further a front. Incidentally, it creates a legend even in Google’s top dog Nexus One (U.S. version) by improved mainly because of the ergonomics.

Fast in all respects

Although the legend has to be content with a 600 MHz processor, but in practice it is hardly a performance difference between the Nexus One (1 GHz) and the Legend noticeable. Even when multiple programs are running simultaneously, the work rate remains at a high level. Also, the display responded quickly in the test. This fix changes from portrait to landscape mode and increases or the image in the multi-touch operation, so the zoom using the separated or reduced contraction of two fingers on the display, fast. Also the kinetic scrolling works well in Legend.

Mobile surfing, you can use HSPA up to 7.2 Mbps for downloads and up to 2 Mbps for uploads. In practice, the browser presents a good pace. In about 12 seconds a default page (Chip.de) was fully loaded. Thanks to USB 2.0, the Legend also puts down during data transfer via USB cable a good time. In less than a second title transferred an MP3 from the computer to the phone.

Android: On-date

Input: optical trackball mouse instead.

Although absent from the Legend of the sophisticated voice recognition of the nexus, and it offers no factory nicely animated wallpaper. However, the phone has something on the box: Android 2.1 is even more on social networks and has some nice visual features. In addition to the Legend, the donated HTC’s own user interface Sense. Here you can use, for example, the function “Friend Stream”. This allows contacts, phone numbers and Social Networks and join the user will be informed about news always on request from the respective networks.

Legendary sharply

OLED is the magic word and the Legend. The 3.2-inch display gives the information you knackscharf and above all with impressive brightness and contrast. In addition, designed as a capacitive touch screen display responds quickly and precisely to the input via a finger. Even the very small type of the virtual QWERTY keyboard with a little practice can use quickly and accurately. When Legend HTC replaces the mechanical trackball with an optical mouse, which responds to the Darüberfahren with a finger. This works in practice, although not quite as precise.

A built-in light sensor agrees with the corresponding display brightness from the current conditions. This saves energy. Speaking of energy or battery life: Again, the Legend can be seen. At full power GSM stood at the end just 3 hours and 40 minutes on the clock.

Also good for the entertainer

Camera: VGA video and images with 5-megapixel.

In the case of the HTC Legend is starting to work a microSD card with 2 GByte. The internal memory of the mobile phone holds about 200 megabytes. To remain around 2.2 GB for your music, photos or videos. If that is not enough that can upgrade up to 32 GB via memory card. The music player uses its full potential on the attached earphones is not full. The factory headset brings the sounds only half-cooked on the ears. Thanks to 3.5 mm jack, you can also anstöpseln own, higher-quality eavesdropper. Then it just sounds a lot better. The sound image can be due to missing or an equalizer presets do not change, but the Android Market offers here many free applications.

Images shot using the Legend 5-megapixel camera. In the current version of Android amateur photographers to get a few more functions to the source - such as the adjustment of contrast, color saturation and sharpness directly via e-scale setting. Also features like geotagging and Flimmeranpassung can be utilized. On the whole, the photos can be seen of the Legend in daylight conditions, when strikes a somewhat irregular edge distribution (see photo gallery). Videos are recorded in VGA format (640 x 480). Our acoustic test mastered the Legend with quite good performances. The voices always sounded natural and pleasant loud. Only the Handsfree placed at the intercom blared out occasionally and tidy at full volume.

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Wave Samsung and Sony Ericsson Vivaz pro: True Touch Stylists

The Wave Samsung and Sony Ericsson Vivaz characterized not only by a visually elegant appearance. In the two touch screen phones also puts a lot of great technology.

LG Wave

Samsung S8500: Powerful mobile wave.

Samsung wants the latest in May 2010 with its own operating system einheizen bada competition for Apple, Android, and Symbian. Whether it will work, we do not know. The Samsung OS was previously seen in its early stages and gave little information about the real quality. But what we can say now: The first phone, called bada-S8500 Wave has the makings of a cell phone hit. In focus: the brilliant AMOLED touch-screen for a sharper, more contrast ads. As knackscharf proved the display already in the practice test. It took great pictures and videos in scene. In order to operate smoothly goes well, the mobile phone Samsung has donated a 1 GHz processor heavy. Moreover cavorts in the Wave, a 5-megapixel camera that takes videos in HD quality. A large and 2 GB of expandable memory (microSD), Express WLAN (n standard), UMTS, HSDPA and A-GPS also include as standard. In addition, Bluetooth is 3.0, which theoretically a transmission speed of up to 24 Mbit / s are achieved. This entertainer is a real eye catcher: The casing is made of aluminum and is only eleven millimeters thick.

Manufacturer Price: around 500 euros () without a contract

Sony Ericsson Vivaz per

Vivaz per Sony Ericsson: Symbian, touch and keyboard.

Sony Ericsson will poach in the coming weeks for various platforms - like in Symbian’s district. The elegant looking Vivaz with Symbian OS S60 5th Edition is currently in distribution. It has consolidated itself, with its touch screen, dozens of multimedia and data capabilities a top-10 place in our mobile phone scores. Delayed briefly for the best version comes with side pull-out QWERTY keyboard for entertainers with a great fondness for messaging, Vivaz pro. The camera remains fixed here at 5 megapixel resolution, without a full keyboard in Vivaz tinkers one 8.1-megapixel camera. But why should not the image quality be worse. In addition, Sony Ericsson is also visually attractive when Vivaz per well on video recordings in HD quality.

Manufacturer Price: around 450 euros () without a contract

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MSI Wind U160 is expected to run 15 hours

MSI seems to the latest Netbook product based on the current generation of Intel’s Atom platform above all to have had in mind: the longest possible battery life. Up to 15 hours to sustain the factory built-in U160 Wind 6-cell battery in operation. The weight should not exceed kg but 1.2.

How much battery life remains the ultimate choice in everyday life, will depend greatly on the usage. If you only watch videos that have to be content, for example, with significantly shorter operating times, for a long train ride, it should nevertheless be easily enough. Also contributes to the long battery life, the LED backlight on the 10-inch display (1,024 by 600 pixels), which produces offer a response time of 8 milliseconds. Otherwise, the hardware equipment offers no surprises: Atom N450 (1.66GHz), Intel GMA 3150, 2GB of RAM and a 250 or 350 GB hard drive are diving.

In addition, WLAN 802.11 b / g / n (available with mechanical on / off switch), Bluetooth 2.0 + EDR, a 1.3-megapixel webcam, mic and a card reader (SD and MMC). The connectivity options include VGA, 3 x USB 2.0, Headphone out, in and micro-based LAN, an additional performance of the U160 will also provide a slot for UMTS cards. As operating system Windows 7 Starter is used. The Wind U160 will come in March in black and gold at a suggested retail price of 349 euros with a two-year guarantee, including pick-up and return service in the trade. Listings are currently not available.

27-inch LED display and new Mac Pro in June?

According to a report by Apple Insider Apple will unveil in June a larger Cinema Display with LED backlight and a new Mac Pro. The former will be marked by a screen diagonal of 27 inches, the latter mainly through up to twelve cores, spread over two of the new “Westmere EP” Xeon processors.

Probably because of the cost Apple so far offers only a 24-inch Cinema Display with LED backlighting, but since late 2008. Meanwhile, the costs seem to be well so far down that, in June is now a 27-inch display with a resolution of 2560 x 1440 slips pixels in a commercially reasonable price region. Also in June, is supposed to seem an outdated Mac Pro, which will probably a will and two new Westmere-EP-working processors that bring it twice in a double to twelve real cores and as many virtual cores. An outlook on the performance of the new processors are already introduced desktop spin-980x Core i7 Extreme Edition (ComputerBase test).

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Car noise and exhaust ade?

Electric cars are on the rise

Electric car LUMENEO Smera

A low hum - much more is not heard from the main road in spite of rush-hour. Mr. Miller leans comfortably back in his chair. Since almost entirely electric cars in the city on the move, he can finally use his balcony. Car noise and exhaust fumes are a thing of the past.

That vision could soon become reality. The automotive supplier, Bosch expects that already in 2015, hybrid and electric cars have a world market share of more than three percent. In 2025, in Europe, all newly registered cars to be equipped with a hybrid or even pure electric drive - according to the forecast of the Center of Automotive Research at Gelsenkirchen University of Applied Sciences (CAR).

Every second person wants an electric car - in city traffic

According to the CAR calculation increases the number of sold hybrid and electric cars in the European Union of 80,000 this year to 16.2 million 2025th Electric-powered cars are an attractive alternative for consumers: According to one early in 2008 by automotive supplier Continental commissioned survey of motorists in eight countries can imagine, almost every second person to buy for urban transport an electric car.

Hybrid Vehicle

No question: hybrid and electric cars are coming. Electric motors have a big advantage: They work much more efficient than combustion engines. A petrol or diesel engine only has an efficiency of up to 35 percent, while electric motors are about 90 percent. Meanwhile, virtually all automakers are working to develop hybrid and electric cars. As one of the first is already in 2010 the Chevrolet Volt on the market.

Secure mobility in tomorrow

But the German producers rely on electric motors: BMW tested the Mini with electric drive, with Daimler and Smart are to take the A-class electric. Recently, the Stuttgart manufacturer has started, together with RWE in Berlin with a first joint electric car project.

VW also relies on the hybrid and electric cars. “Drivetrain electrification is the way to ensure the mobility of tomorrow,” is Professor Martin Winterkorn, chairman of the Volkswagen group, sure.

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Purchasing agent: The best CPU coolers available

Overclocking, high temperatures, or simply a quiet system - there are many reasons why users want to switch their boxed cooler against a more powerful model. Network World has assembled the best coolers in all performance classes.

An overview of all Kühlerklassen, see this article.

Content

* Large Towerkühler: The Royal Class
* Small Towerkühler: For small enclosure
* Top-flow cooler: for HTPCs and small package
* Semi-passive and passive coolers: For absolute silence

Large Towerkühler: The Royal Class

Noctua NH-D14

The Noctua NH-D14 is one of the greatest coolers on the market. With its two fans and a weight of 1.2 kilograms, it is a veritable colossus. But do not worry, thanks to a solid-solid screw holding the cooler on the mainboard. In terms of cooling performance of the Noctua NH-D14 sets a new standard and makes even small water systems behind them.

Noctua NH-D14: The current best coolers

Noctua is known to equip their coolers with plenty of accessories. Besides the high quality Noctua NT-H1 thermal compound and mounting fixture SecuFirm2 lie with two silent fans. A 120-millimeter model, and a 140-millimeter fans with speeds of up to 1,300 revolutions per minute or 1,200 revolutions per minute. The good overall package, however, suggests at 70 euros.

Coolink Corator DS

Like the Noctua NH-D14 has also Coolink Corator DS has two so-called cooling towers, but only a fan. Despite the design can also be retrofitted no second fan. Leistungstechnisch the DS Corator however, lies just behind the sister car of Noctua. The fan rotates in the range from 800 to 1700 revolutions per minute. Coolink is also on the same mounting device, such as Noctua. Because of the smaller package, the price is 50 euros.

Coolink Corator DS: With only one fan

Scythe Mugen II, Rev. B

Scythe has for years been one of the established cooling solution with a broad range. The successful model has traditionally been the Mugen, formerly Infinity. In the second version has the Scythe coolers improved in some places. The nearly 900-gram Mugen II has a screw fixing.

Scythe Mugen II Rev. B: The all-rounder

When fans Scythe Slipstream puts on a model of his own house with a speed range from 400 to 1300 revolutions per minute. The fan is on all four sides of the cooler can be mounted, but is smaller on the narrow sides of the cooling capacity. Almost unbeatable is the price of Scythe Mugen II Rev. B with just under 35 euros.

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New battery promises five times more energy

Scientists around the world are currently working on techniques for efficient, lightweight and durable batteries. Two researchers from Rome have crossed two technologies into a new type of battery that promises a much higher energy density.

The new battery technology will be suitable for electric cars. Source: AP

BERLIN. Tablet PCs, mobile phones, electric cars - more and more applications need batteries for power. They should be easy to deliver more power and last a long time. The development of such power memory researchers are working around the world. Two scientists from the University of Rome have found a way to build durable and powerful batteries, which are also suitable for electric cars.

These have combined Bruno Scrosati, and Yusef Hassoun, the advantages of a lithium-ion batteries and a lithium-sulfur batteries. Although the latter has a higher energy density than lithium-ion battery. The problem is that its electrodes are resolved with time.

In addition to electrodes, which consist of a metal such as lithium, branches, called dendrites, train, can lead to short circuits. To incorporate the electrodes in lithium-ion batteries are not made of metal but of a material, the lithium ions, and can unlock it. Often the graphite.

Combination of two techniques

Scrosati and Hassoun is now combined the two techniques into a tin-sulfur-lithium-ion battery. The negative electrode consists of a composite material of carbon and lithium sulfide, the positive from Zinnnanopartikeln in a carbon shell.

The organic electrolyte solution, the scientists replaced by a lithiumionenhaltige liquid that is trapped in a gel-polymer membrane. Thus, the fluid does not come into contact with the electrodes, which protects the electrodes.

The specific energy of the tin-sulfur lithium-ion battery is five times higher than conventional batteries, the two researchers write in an article in the German journal “Angewandte Chemie”, which is published by the German Chemical Society. The replacement of the liquid electrolyte through the polymer membrane also simplifies the manufacture of the battery and make it safer, the researchers say.

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Fuel cells! Power source of the future! Ever thought it would be cool to have one of these things powering your next big project? Well now you can, because I’m going to tell you how.

I’ll be explaining the basics of how a PEMFC (Proton Exchange Membrane Fuel Cell) works, and how you can make use of one. Also worth noting is that Wikipedia has a great article with more detail if you’re interested. Also, PEM isn’t the only type - these days there are many tested and emerging fuel cell technologies.

• HOW PEMFCs WORK •

This diagram (shamelessly stolen from Wikipedia) gives an idea of how the PEMFC functions. The electrolyte in a PEMFC is the Proton Exchange Membrane itself, which is a thin polymer sheet, typically made out of Dupont’s ‘Nafion’. No chemical elements can pass through the Nafion layer, with the sole exception of Hydrogen, and even then the Hydrogen can’t pass through the Nafion without ditching its one-and-only electron. The process by which the Hydrogen (now just a solitary proton) is shuttled through the Nafion layer isn’t totally understood, but it’s a very useful trick.

The Oxygen waiting on the other side of the Nafion barrier is hungry for extra electrons, and given the chance it’d strip them right off the Hydrogen molecules - but the Nafion seperates the Hydrogen and Oxygen so that can’t happen. Instead, metal terminals on either side of the Nafion layer provide a pathway for the electrons, so that they’re able to travel from the Hydrogen-side to the Oxygen-side. This way everyone’s happy - the Hydrogen atoms can ditch their electrons and pass through the layer to bond with the Oxygen (producing water), the Oxygen can collect the electrons coming into the Oxygen-side of the fuel cell, and the electrons that are passing through the external circuit can be used to drive any electrical devices that are connected.

If you have a reversible fuel cell (which almost all readily available small fuel cells seem to be) then you can also run this reaction in reverse. Pumping electrons into the Hydrogen-side of the fuel cell and pulling them out of the Oxygen-side will tear the water molecules apart. The Oxygen will reform as Oxygen gas, and likewise the Hydrogen will skip back across the Nafion barrier and reform as Hydrogen gas.

When used in this way, by ‘charging’ and ‘discharging’ the fuel cell, the whole unit acts very much like a rechargable battery. The main difference is that you can easily increase the energy storage capacity of the ‘battery’ just by making your Hydrogen and Oxygen storage tanks bigger.

Mobile phone battery for Brazil’s telecoms regulator approval system

Its Web site said Brazil’s telecoms regulator Anatel, and certification of mobile phone battery chargers approved rules and regulations. Under Section 481 proposal, Anatel Brazil’s mobile phone companies to achieve sales of men’s battery is required. Mobile phones must be equipped with the label for the user, mobile phones, mobile phone battery is Anatel quality and safety standards chargers immediately in line with. Evidence that a variety of cells and cell phone situation has been tested in, for example in high temperature testing

Again Toshiba 1400 laptop batteries recalled

U. S. Consumer Products Safety Commission (CPSC) announced that the latest battery recall affects about 1400 laptop, model Toshiba Satellite A100, A105, and Tecra 7 notebooks, including sale price at $ 680.

Toshiba said that the United States outside of notebook batteries overheating with three reports, but no injury accidents. AC power system for laptop users on the CPSC’s recommendation should follow, the question put in the battery is sent to Toshiba for a free replacement.

Industry experts said the sale of laptop battery notebook battery recall has not affected many of the problems that some buyers switch their brands.

Because battery recalls that often IDC, enterprises and consumers, with 15% of buyers have changed their purchase plans. Although small, but significantly the number of notebook manufacturers, particularly in the field of business to changes in market share, lead, usually a large number of these buyers to buy a notebook ratio.

Dali polycrystalline silicon thin film solar cell

Dali, Yunnan Province of China Hi-tech industrial development area and source of Chang High-Tech (Holdings) Limited branch signed polysilicon thin film solar photovoltaic project investment function, sign function, 500 million US With the formal end of the dollar high-tech investment projects was held in Dali settled.

Zhouweishuji signature ceremony, Deputy Secretary of State speech Gujarat Ping, Ping on behalf of the Governor presided over the signing ceremony.

It is understood that Dali polycrystalline silicon thin film solar photovoltaic project, Ministry of Foreign Affairs, “Bonn Yunnan province, before the international advanced high-tech projects approximately 500 million U.S. dollars, an annual production output of 40MW production line put the project The total investment in early stage project with “about 40.92 million US Approximate annual gross profit of $ 80 million U.S. dollars and the annual sales income tax may feel, about all the projects into production of 122.76 million US Approximate annual gross profit of $ 240 million U.S. dollars and the annual sales income tax may feel. Project Asia’s largest production base will become thin polysilicon film battery production.

U.S. The selection of five research projects funded Capital Energy Department over 17.2 million U.S. dollars in order to plug the major obstacles in the commercialization of hybrid electric vehicles, particularly to reduce the cost of battery and increase battery life arrived. Five research projects with the United States Advanced Battery Consortium to share the money. Battery research and development money in the end of these studies received 38 million US dollars will reach. U.S. Energy Department contract negotiations stage financing plans are finalized and waiting for Congress to grant. Five research projects are expected to start in 2007 and 2009 will continue to have. Money mainly U.S. Ministry of Energy Energy Efficiency and Renewable Energy Department S (2007 to 2009 for the financial year) will happen.