Why can't the battery be charged? How to solve this problem?

1)Reason:
a.The battery has no voltage.
b.There is problem with charger, as it has no output electric current.
c.Low charging efficiency due to external cause.
2)Solutions:
a.Test whether the charger has voltage and output electric current or not.
b.Check if the charger is well contacted with battery.
c.Activate the battery with voltage and current 1.5 time higher then the highest ones of battery. (Use this method only when the battery can't be charged.)

What causes short lifetime of battery? How to prolong the lifetime of battery?

1)Reason:
a.Charger or electro circuit can't be fit for the battery.
b.Overcharge and overdischarge, etc.
c.Battery can't comply with the charging requirement
2)Solution:
a.Use the original charger.
b.Charge the battery after it automatically powers off , then full charge the battery.
c.Avoid erroneous usage of battery, such as heavy pressure, short circuit, fall off and so on.

What are the differences between Primary Battery and rechargeable battery?

A primary battery is not intended to be recharged and is discarded when the battery has delivered all of its electrical energy.
A rechargeable battery is a galvanic battery which, after discharge, is restored to the fully charged state by the passage of an electrical current through the cell in the opposite direction to that of discharge.

How to classify the battery?

Batteries are grouped into following categories:
Alkaline battery
Zincic carbolic battery
Lead-Acid battery
nickel-metal-hydride
nickel-cadmium
Lithium battery
Li-ion battery
Li-polymer battery
Fuel cells
Solar cells
Other types of battery

What is a Battery?

In science and technology, a battery is a device that stores energy and makes it available in an electrical form. It converts chemical energy into electrical energy, producing an electric current when connected in a circuit. The finished battery is an electrically connected group of cells (wired in series) that stores an electrical charge and supplies a direct current (DC). We usually call finished battery as battery pack and unfinished battery is called as cell.

Report: AMD develops medium-Graphics ATI Radeon HD 5830

Report: AMD develops medium-Graphics ATI Radeon HD 5830

The DirectX 11 graphics card features 1120 stream processors. It achieves a performance of 1.79 teraflops. AMD, the HD 5830 is positioned between the HD 5770 and HD 5850th The price should be below $ 250.

AMD supposedly developed under the name of ATI Radeon HD5830 graphics chip for a new mid-range price from 200 to 400 dollars. The Chinese website IT168.com has released the first details of the graphics card that AMD is positioned between the models of Radeon HD 5850 and Radeon HD 5770th

According to the report supports the Radeon HD 5830 DirectX 11th The GPU consists of 2.15 billion transistors and runs at a clock of 800 MHz. The 1120 stream processors of the board to achieve a performance of 1.79 teraflops.

AMD's forthcoming mid-graphic works with 1 GB of GDDR5 memory is clocked at 1,000 MHz. The maximum power consumption is at IT168 with 175 watts. At idle, the graphics chip will consume 25 watts. About ATI's multi-monitor mode Eyefinity "up to six monitors with a resolution of 2560 times 1600 pixels can be controlled.

ATI Radeon HD5830 graphics cards will be eligible for under 250 dollars (185 euros) in trade. As a manufacturer, the report Gigabyte, Sapphire, Powercolor, HIS, and XFX.

AMD positioned its new medium-class graphics ATI Radeon HD 5830 to be between the models IT168.com HD 5850 and HD 5770 (Screenshot: ZDNet).

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SanDisk announces SSDs with TRIM Support

SanDisk announces SSDs with TRIM Support

The drives of the G3 series reach speeds of up to 220 MByte / s and writing speed of 120 MByte / s. They appear with capacities of 60 and 120 GByte. The mean time between failures is two million hours.

SSD SanDisk has expanded its portfolio with a 2.5-inch model with a capacity of 60 gigabytes and 120 gigabytes. The drives feature a G3 dominate the Windows 7 supported TRIM command, which ensures a consistently high level of readiness to perform a Solid State Drive.

The 2.5-inch drives in the G3-series work with a 3-GBit/s-SATA-Interface, the theoretical transfer rates of up to 300 MB / s possible. The maximum reading rate indicates SanDisk 220 MB / s, write rate will be up to 120 MByte / sec. The mean time between failures (Mean Time Between Failures, MTBF) is according to the manufacturer for two million hours.

The power consumption is of Solid State Drives access while at 0.4 watts. At idle, the consumption drops to 0.3 watts. The company believes in keeping the memory operating shock of up to 1500G. They support Windows XP, Vista and 7 as well as Linux and Mac OS X.

SanDisk SSD delivers its G3 series currently under its own information to dealers in Europe and the United States. The price for the model with 60 gigabytes is the company with $ 229.99, the variant with 120 GB costs $ 399.99. The manufacturer offers a warranty of ten years.

Without TRIM support for SSDs can use the service after a prolonged partial decrease considerably. The reason for this lies in the physical characteristics of flash cells, which are used for the SSD models. Flash memory can be described only with no wait states, if the cells are empty.

Since the operating system files but only delete the contents of the file system and the controller of the SSD of this deletion will notice anything, it must delete the access back into the cell, these first before he can describe it. With the TRIM feature shares the operating system with the SSD controller, the data blocks are no longer used, so that it can delete the unused cells of rest, in order to later describe without loss of performance again.

The models of the SSD-G3 series are available with capacities of 60 GB and 120 (Photo: SanDisk).

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United navigation presents two Becker Navigation

United navigation presents two Becker Navigation

The Traffic Assist Z 213 and Z 215 are waiting for a 5.1-inch touch screen and 4GB internal memory. Other features include 3D map display, Bluetooth and headphone jack. The models come in April in the trade.

United navigation has brought under the licensed brand portable navigation devices Becker Z 213 and Z215. Both models have a metal frame around the rubberized casing. The Z 215 is additionally decorated with a chrome front bar. The displays are on the diagonal 11 centimeters (5.1 inches) in size and sensitive to touch. Furthermore offer the 3D navigation map display, a mini-USB jack, a headphone jack and a Micro SD slot. The internal memory can store 4 gigabytes.

In order to observe the Highway Code have the navigation through a Bluetooth interface. Over the speakerphone, the user can import phone book with phone calls while driving, or read and send SMS messages - if their phone supports this function. The Z 215 also provides a voice for addresses.

On both models, the Becker-jam forecasting function "Navteq Traffic Patterns is integrated. You can traffic as well as the time of the day included in the route planning. In addition, the navigation with the dynamic Warner TMC feature. The Z 215 also offers premium services including TMC TMC Pro for all of Europe. For a good conscience is to ensure Becker Economic route guidance, a route that automatically determines the best compromise between travel time and fuel consumption.

The navigation systems are commercially available in April. The Becker Traffic Assist Z 213 will cost 279 euros, the Becker Traffic Assist Z 215 with 329 beats euros. The package contained a DVD with a content management software and maps for Europe, a car charger and a disc holder. The latter can be combined with all the cables. This facilitates the removal of the device.

From left to right: the Becker Traffic Assist Z 215 and Z 213 (Image: United navigation).

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Dell is far from efficient Optiplex PC

Dell is far from efficient Optiplex PC

It will give it as a mini tower, desktop and small form factor. The performance is 35 percent higher than the previous generation. Also new Dell FX100 is a zero client completely without processor and operating system.

Dell has introduced the OptiPlex 980, which it described as the most powerful and energy efficient desktop PC in its history. The company also announced the FX100 desktop virtualization solution.

The OptiPlex 980 delivers up to 35 percent more power than the previous generation of devices. Dell is built Intel Core series processors and i5 Core i7, instead of optional solid state hard drives. Contribute to the high efficiency power supplies at 90 percent efficiency.

The Optiplex 980 meets the standards of Energy Star 5.0 and EPEAT Gold. An optional "EcoKit" lowers the noise by an additional 50 percent.

The management of OptiPlex environments facilitate support of Intel's vPro. In addition, a management tool called Dell Dell Update Catalog available.

The calculator will be available in the coming weeks in three housing types: mini tower, desktop and small form factor.

Also for the same time announced Dell FX100 Zero Client, there are no prices. It can either be used as a virtual remote desktop or as a dedicated remote workstation - without their own processor or operating system. The new device is that a Dell high-performance communication solution based on the PC-over-IP technology (PCoIP). The so far only as a remote access device for the Dell Precision R5400 rack workstation available FX100 is now available with new firmware that supports the VMware View 4.0 with PCoIP protocol.

Use the Dell Optiplex 980 housing (Photo: Dell)

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Battery Knowledge

Battery Knowledge