The tree flow as my coming

Laptop battery Safety circuits

A modern laptop battery is a delicate device that requires protection against damage. The most common protection is a fuse that opens if there is a too onerous. Some backups will lead to a permanent opening for the battery disable, for example if the fuse wire is blown. Other safety devices are resettable. The polyswitch ™ is such a resettable fuse. Incorporated into the current path of the battery, this device is a high impedance at too high a burden. The polyswitch ™ returns to its normal function as soon as the situation returns to normal.

Batteries in an explosive environment must be explosion proof. Hazardous environment includes oil refineries, mines, grain elevators and fuel stations at airports. Such zones are predestined for the use of wireless communications and mobile computing. Non-explosive Toshiba PA3399U-1BRS to prevent too great heat and may cause electric sparks with defective equipment. Due to the strict licensing requirements, the cost of battery explosion two are three times higher than for standard batteries.

Another battery that provides the highest protection devices is the lithium-ion battery. This is done to provide security in all circumstances, because it is in the hands of a wide audience. Typically, a field-effect transistor (FET) will be opened if the charging voltage is reached from any cell 4.30V. A separate fuse opens when the cell temperature reaches 90 ° C. In addition, a switch will interrupt permanently in each Toshiba PA3451U-1BRS cell of the charge current when the pressure safety threshold has been exceeded the value of about 10bar (150 psi). To protect the battery against overload, the load path is interrupted by the fuse circuit at approximately 2.50 V / cell. Longer storage at voltages of 1.5 volts per cell and deep damage to the lithium-ion battery can, and create security problems when trying to recharge the battery.

Each parallel string of cells in a lithium-ion battery requires an independent voltage monitor. The more cells are connected in series, the more complex the security posture. Four Toshiba PA3465U-1BRS cells in series, the practical limit for commercial applications.

The internal protection circuitry shall be designed so that the lowest resistance is built into the load path. The circuit in a Zellulartelefonbatterie consists of two FET switches in series. A FET is responsible for the upper, the other FET for the lower voltage switching threshold. The joint resistance of the two FETs is idle 50-100 milliohms (mW). This virtually doubles the internal resistance of the Toshiba PA3107U-1BRS battery.

A critical problem arises if static electricity or a faulty charger destroyed the protective circuit of the battery. This can lead to permanent ON state of the circuit breaker, without which the operator knows anything about it. A battery with a faulty protection circuit may function normally, but offers no further protection. If a charge is about the safety threshold, eg by a defective charger, a leakage of gas made with inflammation. Such a situation must be avoided at all costs. Such a Toshiba PA3331U-1BRS battery to close shortly, can lead to an explosion.
Small lithium-ion batteries containing magnesium chemicals that contain one or two cells may include a fuse as protection. Magnesium is more tolerant than cobalt, and these cells are regarded as safe when they are small.

Although less expensive, the absence of a protection circuit brings a new problem. Zellulartelefonanwender we’ll have access to Toshiba PA3450U-1BRS chargers that rely on the protection circuit to stop the load. Without a protective circuit, the cell voltage will rise too much and thus damaging the battery. Too much heat, even the swelling may be the result. The use of the battery and the charger should be halted when a lithium-ion battery is hot.

To ensure safety, manufacturers sell lithium Toshiba PA3534U-1BRS batteries, not separately, but always assembled into a battery, fully integrated with the safety circuit. The circuit is often the object of a special examination before the producer cells, and circuitry for assembly at liberty. Although there were several incidents involving leaks and infections, should the lithium-ion batteries are known to be safe.

The temperature affection for different battery

Nickel-metal hydrides are less tolerant than nickel-cadmium in terms of the charge at low or high temperatures.
Nickel-metal-hydride can not load quickly at temperatures below 10 ° C, nor can they load slowly below 0 ° C. Some chargers are designed so that they Ladekoeffizienten and the ambient temperature change. Price considerations are not allowed to provide Apple PowerBook G4 12 inch Battery battery chargers for consumer electronics with temperature sensors.

At higher temperatures, the charge acceptance of nickel-based Apple PowerBook G4 Battery is drastically reduced. A battery that can hold at room temperature, a medium capacity of 100%, starts at 45 ° C ambient temperature, only 70%, and even only 45% at a temperature of 60 ° C. This highlights the poor performance of some car chargers in the summer!

Lithium-ion Apple PowerBook G4 15 inch (aluminum) Battery provide a good charging in to deep as well at high temperatures. Some cells allow charging with 1.0 C from 0 ° C to 45 ° C. Most lithium-ion cells, however, prefer a lower charge current when the temperature at 5 ° C or falls below. Must be dispensed on the loading below the freezing point, as a coating can be effected by lithium metal.

The lead-acid Apple PowerBook G4 17 inch Battery is not very sensitive to extreme temperatures, as we all know, on the basis of experience with our car batteries. Part of this tolerance is the inertia of lead-acid systems are attributed. Some battery models allow a shop below the freezing point with a small charging current, while others are damaged, and provide only reduced capacitance values, and life expectancy is shortened.

To improve the loading performance of lead-acid Apple PowerBook G4 17 inch Battery at low temperatures and prevent thermal effects during the warm-up, it is important to monitor the charging voltage limits to be set. An installation of this measure can extend the life expectancy of a battery up to 15%. General guidelines recommend making a correction of about 3mV per cell per degree Celsius. The voltage correction has a negative coefficient, ie The threshold voltage decreases when the temperature rises.

Heat kills the Apple MacBook Pro 17 inch Battery! The warmer the cells shorten, the life expectancy. Higher temperatures may not always be foreseen, especially during a fast charge. It must, however, attempt to keep these periods as short as possible. While 45 ° C is temporarily tolerable, begin a battery from 50 ° C damage is increasing. Moreover, cells are warmer in the interior of a battery, always a few degrees when the temperature of the battery case.
Ultra Fast Chargers

Some manufacturers of chargers promise amazingly short loading time of 30 minutes or less. With well-balanced cells and moderate temperature can nickel-cadmium VGP-BPS10 s batteries, which are designed for fast charging, are being charged in a very short time. This is achieved with a simple increase of the charging current during the first 70% of the charge cycle.

The article Via battery blog

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Simple Guidelines about using battery when charging and storing

Avoid frequent full discharges because this leads to additional power consumption of the backup battery. Frequent partial discharges with many charges are better for lithium-ion laptop battery than one total discharge. Charging a partially discharged lithium-ion battery, the battery does not hurt, since no memory effect occurs. (In this respect, lithium-ion differs) of nickel-based batteries. The short battery life in a laptop is justified by the heat rather than through many charge / discharge cycles ..

Although free from memory, it should at lithium-ion batteries are only aware after 30 cycles, a full discharge is to calibrate the Toshiba pa3384u 1brs Toshiba pa3107u 1brs battery with the fuel gauge too. The discharge of the battery with the device serves this purpose. If this is ignored, the fuel gauge is crucial unreliable. The battery life will not be affected.

Lithium-ion Apple a1057 A1012 batteries should be kept cool. Hot cars are to be avoided. For longer storage, the battery should have a charge of about 40%.

Consider removing the iBook G4 14 Battery battery from a laptop when it is fed from the mains. (Some laptop manufacturers are concerned about dust and moisture accumulating inside the battery compartment).

Abstain from the purchase of a replacement MacBook Pro 15 Battery battery for later use. Note the date of manufacture. Do not buy old batteries, even if they are offered at reasonable prices.

The article Via Battery blog

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Apple MacBook Pro features compare

As we all know, apple produce the three Macbook Pro notebook : Macbook Pro 13″, Macbook Pro 15″, Macbook Pro 17″. They are named for their LCD screen width, but they are not only differ by LCD screen width but also have their own feartures. Now let me introduce the features of each Macbook Pro notebook. Specially need to know this the Macbook Pro 13″ is the newst notebook of Macbook series.

Apple 13-inch Macbook features

Precision aluminum unibody enclosure.
Machined from a solid piece of aluminum, the new MacBook not only looks stunning, it’s also thinner, lighter, greener, and more powerful than ever. Also we call it Apple Macbook Pro 13".

LED-backlit display
The ultrathin 1280-by-800-pixel LED-backlit display shows off your digital media perfectly. And it’s as easy on the environment as it is on the eyes: The gorgeous glass and aluminum enclosure is arsenic- and mercury-free, and LED technology makes it more power efficient.

Advanced NVIDIA integrated graphics
Experience the most powerful MacBook graphics ever. With a new NVIDIA GeForce 9400M processor, the new MacBook delivers up to 5x more graphics performance, so you can immerse yourself in lifelike 3D games.

All-new, smooth glass Multi-Touch trackpad
Its redesigned with even more room for even more gestures. Now the entire glass trackpad is also the button, so its clickable everywhere.

Apple 15-inch Macbook features

Precision aluminium. The new gold standard
Carved from a single block of aluminium, the new MacBook Pro unibody enclosure is slim and streamlined with a soft-brushed surface and stunning contours.

Brilliant brilliance.
The moment you open your MacBook Pro 15 battery youre greeted by glorious, full screen brightness. But thats only one gleaming quality of the glossy LED-backlit widescreen display. The picture is brilliant and sharp from corner to corner.

Graphics in full force
The new MacBook Pro reaches a new level of high-speed, high-end game-playing power. Not to mention pure performance for graphics-intensive applications like Aperture and Motion.

Even the keyboard is advanced
The Apple Macbook Pro 15" rigid aluminium keyboard webbing has been cut precisely to hold the keys. And the keys are curved to perfectly fit fingers.

Apple 17-inch Macbook features

The longest-lasting Mac notebook battery ever
The Apple Macbook Pro 17 battery in the new 17-inch MacBook Pro lasts up to 8 hours on a single charge1 and can be recharged up to 1000 times2 compared with only 200 to 300 times for typical notebooks. Combined, these advancements offer a dramatic improvement in battery lifespan: more than three times the lifespan of typical notebook batteries up to five years.

2.3 million pixels of perfection
With the high-resolution LED-backlit widescreen display on the 17-inch MacBook Pro, you get desktop-quality colour in an Apple notebook for the first time. The moment you open your MacBook Pro, youre greeted instantly by full, corner-to-corner screen brightness. The 1920-by-1200-pixel resolution (133 pixels per inch) means you can view more palettes and windows or watch HD video in its native 1920-by-1080 resolution.

Graphics in full force.
The MacBook Pro reaches a new level of high-speed, high-end game-playing power. Not to mention pure performance for graphics-intensive applications like Aperture and Motion. Use the new NVIDIA GeForce 9400M integrated graphics processor for great everyday performance with up to 8 hours of battery life.

Precision aluminium. The new gold standard.
Carved from a single block of aluminium, the new unibody enclosure is slim and streamlined, making this MacBook Pro the worlds thinnest and lightest 17-inch notebook just 0.98 inch thin and 6.6 pounds. But its not just for looks as its MacBook Pro 17 battery.

Now we know the Macbook Pro series laptop are Precision aluminium and pretty interface, whats the difference between them?

All the data are from : Apple.com

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How to replace the Dell Processor Thermal-Cooling Assembly

After used for a long period (perhaps 15- 24 months), our notebook body heat is increasing too hot while working for sometime. As more and more programs are install into our notebooks, the laptop battery CPU and processor works hard and take out a lot heat. Then we should replace the Processor Thermal-Cooling Assembly.

I take the Dell™ Inspiron 1525/1526 Service Manual Dell Processor Thermal-Cooling for example. Gernerally the whole process should follow the 2 steps : 1 .Removing the Processor Thermal-Cooling Assembly. 2. Replacing the Processor Thermal-Cooling Assembly.

Removing the Processor Thermal-Cooling Assembly

CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide.

1. Follow the instructions in Before You Begin.
2. Turn the Dell Latitude D520 Battery computer over.
3. Remove the eight captive screws securing the back cover and remove the module cover.
   
   
   The 1 : module cover. 2 : captive screws (8)
4. In sequential order, loosen the five captive screws securing the processor thermal-cooling assembly to the system board, then carefully lift the processor thermal-cooling assembly out of the Dell Latitude D600 Battery computer.
   
   1: captive screws (5). 2: processor thermal-cooling assembly

Replacing the Processor Thermal-Cooling Assembly

CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide.

1. Align the five captive screws on the Dell Latitude D830 Battery processor thermal-cooling assembly with the screw holes on the system board.
2. In sequential order, tighten the five captive screws to secure the processor thermal-cooling assembly to the system board.
3. Replace the module cover and tighten the eight Sony VGP-BPS8 captive screws.

The detail content from dell.com. Laptops-battery.co.uk Hopes that help you.

Apple iBook G4 and PowerBook G4 Battery Exchange Program

Apple has determined that certain lithium-ion batteries containing Sony’s production pose a security risk, it may lead to economic overheating, the rare cells.

Of the affected batteries were sold worldwide in October 2003 with the following notebook computer use: By August 2006 PowerBook G4 12 inch Battery , PowerBook G4 12 inch Battery and PowerBook G4 15 inch (aluminum) Battery .

Apple has initiated recall of the affected laptop batteries and has initiated a worldwide exchange program to provide a new replacement battery free of charge to eligible clients. This process is ongoing with the U.S. Consumer Product Safety Commission co-operation (CPSC) and other international security agencies.

Make sure your battery
Please use the following table to determine the PowerBook G4 Battery model and serial number for your iBook or PowerBook. If the first five well-known within the battery’s 12-bit serial numbers have dropped, please order the immediate replacement of the battery.

To view the model and serial number label at the bottom of the PowerBook G4 17 inch Battery, you must remove the battery from the computer. The serial number is printed in black or dark gray, under a bar code fonts. See below photos.

Note: When you remove from the iBook or PowerBook G4 Battery recall, consumers should plug in the AC power adapter until a replacement battery arrives on the computer.

If you have participated in these computer models or recently purchased an Apple iBook G3 received an extra battery or A1008 A1012 battery recall, please check your battery serial number, if you receive a replacement battery is the impact of this program.

National and regional distributors, cataloging, and Apple’s online and retail stores sold from August 2006 to October 2003 with the battery computer. These batteries were also sold separately, may have been replaced by service units.

Exchange process
To begin the process of replacing the battery, you will be asked for your iBook G4 battery and PowerBook G4 notebook computers, your battery serial number, serial number and mailing address.

In Australia, New Zealand, the South Pacific islands and Asian clients (excluding Japan) should contact your local Apple Authorized Service Provider to obtain a replacement A1057 A1060 battery.

After serial number verification, a new battery will be shipped to you free of charge. When you receive the replacement A1078 Apple A1079 battery, please use the same packaging, packaging and shipping label, including the proper handling of pre-paid back to the battery recall apple.

Note: If your battery serial number does not meet the scope listed above, you do not have to exchange the battery.

The detail content from Apple.com Laptops-battery.co.uk hopes that help you.

85 WHr 9-Cell Lithium-Ion Dell Inspiron 1420 battery

The Dell Inspiron 1420 Battery is special for the Dell 1420 notebook : The 1420 is offered with the new Core 2 Duo processors with 800MHz front side bus and clock speeds ranging from 1.5GHz to 2.2GHz. Along with T7100, T7300, and T7500 Core 2 Duo CPUs there are two new budget models: the T5450, and the T5250. According to earlier reports, Dell Inspiron 1420 will be also configurable with the “Santa Rosa” compatible Celeron M processor.

The Image Via http://www.battery4.us/

The Dell inspiron 1420 laptop battery Tech Specs :

• Technology : 9-cell lithium ion
• Capacity : 85 Wh
• Voltage: 11.1V
• Color : Black
• Work With: Dell Inspiron 1420 Battery , dell vostro 1400 battery
• Manufacturer Part# : Dell WW116, FT095

The Dell Inspiron 1420 battery highlights
85 WHr capacity lets you work seamlessly while on the move 
Offers reliable power for dependable performance

Customer review :

I would not get this product. I would not buy a laptop from Dell again. Laptop Battery barely lasted a year and was told I had to buy another one that this was the normal life of battery. Bad Product!

This Dell Inspiron E1505 Battery just died on me. it wont charge more than 37% and now i have to buy another one…

The replacement products in Amazon review :

was skeptical buying this battery for my Dell Inspiron 1420, being it so cheap. Any computer store around where I live the batteries were over $150 for standard capacity and even more expensive [...]. This is a great buy.
The only downside is that it is a heavy Dell Inspiron 1420 Battery and was not fully charged when I first put it in.
Otherwise, it works well and gives me 4 hours to float around on battery.  

Since receiving (Amsahr-quick delivery) and using this Dell Inspiron 1720 Battery and charging and discharging it approximately 6 times, it has performed excellently and with high performance. It also fits perfectly like the original, and was priced very reasonable.

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How to prolong digital cameras battery life

At present, digital cameras have been widely used. How to extend digital cameras battery life, 7 kinds of methods introduced here:

(A) Less flash. Flash power consumption is the largest in the Kodak and Dell KD186 Dell Y9943 automatic mode and PASM mode, the flash can be turned off (scene mode exception).

(B) Turn off auto-zoom. Camera’s default setting is continuous AF zoom, which is the camera around the scene on a continuous zoom, in the setting menu will be a continuous zoom into a single, the icon for the Dell G5266 Dell GW240 AF.

(C) Reduce image editing times in the camera . Applications readers up in the computer editing view pictures, if we did not have the camera to edit view pictures, would be able to save half of the electricity.

(D) a change in image format. According to their Latitude D600 Battery actual needs, the pictures taken will be transferred as far as possible into the low-storage format. This camera can speed up time to write disk, naturally a power-saving.

(E) Viewfinder LCD screen when you minimize the use of multi-use Latitude D830 Battery EVF viewfinder.

(Vi) to reduce the number of zoom. Telephoto lens to narrow the disparity is indeed a lot of power Yo!

(7) in the setting menu to switch off Latitude D820 Battery unnecessary switches.

Jack hopes that help you.

The articel is via Batteryblog

Dell tip for lithum laptop battery

Q Is it easy to install a battery?

a Yes, very easy. First, make sure all open files are saved. Next, either attach the aC adapter directly to the lap or set the system to “hibernate” mode or shut off. Release the latch on the current battery, and simply install the replacement Dell Latitude D830 Battery.

Q Will Dell laps accept non-Dell batteries?

a Dell has a rigorous qualification process by which all Dell batteries are validated to ensure proper function, performance and safety. Some non-Dell batteries are available in the market with claims of compatibility with Dell systems. Dell cannot verify these claims, nor the safety of using them in a Dell system. Dell strongly encourages our customers to use only Dell lap batteries advertised as appropriate for their lap model. Only Dell lap batteries come with a 1-year warranty, are engineered for optimal safety and performance for Dell systems, and are supported by Dell technical support for the length of the warranty period.

Q What is a modular bay battery?

a In some lap systems Dell offers a Latitude D620 Battery that can be used in the optical drive media bay (DVD/CD drive bay). This enables the use of two batteries, potentially extending the available run time.

Q If I install a modular bay battery, are my primary and modular bay batteries working at the same time to power my lap computer?

a No, the modular bay battery is used first, then the system automatically switches to the primary battery. This is a deliberate design to allow the most amount of run time to remain in the primary Dell KD476 Dell U4873  battery in case the modular bay battery is removed and replaced with an optical drive.

Q For what use is the strip of LED lights on my battery?

a Most Dell batteries have an LED indicator that allows users to see how much run time and how much overall battery life are available at the touch of a button.

To check Sony VGP-BPS8  charge, press the button and the number of lights that appear will tell you charge status. If all lights appear, you have a fully charged battery. Each light that appears accounts for approximately 20% charge.

To check the battery health, press and hold the status button on the battery charge gauge for at least 3 seconds. If no lights appear, the battery is in good condition and approximately more than 80 percent of its original charge capacity remains. Each light represents incremental degradation. If five lights appear, approximately less than 60 percent of the charge capacity remains, and you should consider replacing the Inspiron 1100 Battery .

Q What does Dell recommend for battery storage for a long period of time?

a When storing for more than 4 days these guidelines can better preserve the life of your battery:

Do not store batteries for long periods plugged into or attached to any power source. This includes aC adapters and lap security carts plugged into an outlet.

Lap batteries, including those stored in lap systems, should maintain an Operational Storage Temperature of 0° to 35°C (32° to 95°F).

Batteries may be stored in the lap or outside of the lap.

Charge batteries before storing. The recommended charging time should not exceed 1 hour. Typically, this should charge the laptop battery to between 80% and 100%. (Some discharge will take place over time. Stored batteries are expected to discharge 10-15% over a four month period, for your information.)

Q are there restriction with taking lithium-ion batteries on planes?

a Effective January 1, 2008, the Department of Transportation (DOT) through the Pipeline and Hazardous Materials Safety administration (PHMSa) will no longer allow loose lithium VGP-BPS9/B  batteries in checked baggage. These batteries may continue to be packed in carry-on baggage.

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The article Via laptop battery blog

85 WHr 9-Cell Dell Inspiron E1405 Battery Review

Dell plans to begin offering the E1405 with a higher Core 2 Duo processor beginning in the last quarter of this year. We anticipate the E1405’s performance will improve as a result of this processor upgrade, but Dell laptop battery life might also be impacted.

Dell Inspiron e1405 Specs:

• Processor: Intel Yonah Core Duo T2300 (1.66 GHz/2MB L2 Cache)
• OS: Microsoft Windows XP Media Center Edition
• Hard Drive: 80 GB SATA @ 5400RPM (manufactured by Hitachi)
• Screen: 14.1″ WXGA+ UltaSharp Widescreen with TrueLife (1440 x 900)
• Graphics: Intel Graphics Media Accelerator 950
• RAM: 1.0GB DDR2 SDRAM @533 MHz (2 x 512MB)
• Optical Drive: 24x CD-RW/DVD-ROM
• Battery: 6-cell lithium ion Dell Inspiron E1405 Battery
• Wireless: Dell 1390 Mini Card 802.11 b/g (54 Mbps)
• Weight: 5.3 lbs
• Dimensions: 1.5″ (H) x 13 ” (W) x 9.6″ (D)
• Ports/Slots: 1 IEEE 1394 (FireWire), 4 Universal Serial Bus (USB 2.0), 5-in-1 removable memory card reader, VGA monitor out port, S-video out, RJ-45 Ethernet LAN, RJ-11 modem, ExpressCard 54mm, headphone/speaker jack, microphone connector

Its 85Whr (9-cell) Dell Inspiron E1405 Battery sticking out from the back, the E1405 would actually be over a pound lighter than the E1505 battery, instead of just 0.8 pounds lighter.

The battery Tech Specs:
Technology : 9-cell lithium ion
Voltage: 11.10V
Capacity: 85Wh
Dimension: 206.70*49.00*23.80mm
Weight: 0.456kg
Condition: Brand New, 1 year warranty!
Works with: Dell XPS M140 Battery, Dell Inspiron E1405 Battery, Inspiron 630m Battery , Dell Inspiron 640m Battery

The Dell Inspiron E1405 battery features :
* 85 WHr capacity lets you work seamlessly while on the move
* Provides very safe charging and discharging
* Offers reliable power for dependable performance
* Competible with the battery code as : Dell TC023, Dell Y9943,

Customre Reviews :

this Dell laptop battery is a nightmare. i bought 2 defective ones in a row and now dell will only refund one of them. the first one didn’t charge at all. after 2 weeks, the second one doesn’t charge past 5% of its capability. Dell will not refund me for the first one because their agents never connected me to the right # after I purchased the second one. Now i am over the 21 days. Dell has problems.

This battery only lasts a few months when I checked the price for a replacement I got shocked. I will try other batteries not from dell and check quality and price, maybe I can get the same performance as the oem but without wasting more money.