Tuesday, February 26, 2008

hp laptop battery recall

Hewlett-Packard Company Announce Recall of Notebook Computer Batteries

WASHINGTON, D.C. - The U.S. Consumer Product Safety Commission, in cooperation with the firm named below, today announced a voluntary recall of the following consumer product. Consumers should stop using recalled products immediately unless otherwise instructed.

Name of Product: HP and Compaq Notebook Computer Battery Packs

Units: About 135,000 battery packs worldwide, including about 85,000 in the U.S.

Importer: Hewlett-Packard Company, of Palo Alto, Calif.

Hazard: An internal short can cause the battery cells to overheat and melt or char the plastic case, posing a burn and fire hazard.

Incidents/Injuries: HP has received 16 reports of batteries overheating, including four in the U.S. No injuries have been reported. Four cases of minor property damage were reported, including one in the U.S.

Description: The recalled lithium ion rechargeable battery packs are used with various HP and Compaq notebook computers (see list below). The recalled battery packs are a subset of those manufactured March 2004 through September 2004, and will have a bar code label starting with GC, IA, L0 or L1.

Hewlett-Packard and Compaq Notebook Models that may contain a recalled battery pack

HP Pavilion HP Compaq Compaq Presario Compaq Evo
dx4000
dx5000
zd8100
ze4100
ze4100/xt1xx
4200
ze4200
ze4300
ze4400
ze4500
ze4600
ze4700
ze4800
ze5155
ze5200
ze5300
ze5400
ze5500
ze5600
zv5000
zv5200
zx5000
zx5200
nc6000
nc8000
nw8000
nx5000
nx9005
nx9008
nx9010
nx9100
nx9105
9000
9005
1100
2100
2500
R3000
R3200
V1000
X4000
X5000
X6100
n1010v
n1050v

Sold at: National and regional computer and electronics stores, online stores, hp.com and hpshopping.com from March 2004 through May 2005 for between $1,000 and $3,000. The battery packs also were sold separately for between $100 and $130.

Manufactured in: Battery packs manufactured in China and Taiwan.

Remedy: Consumers should stop using the recalled batteries immediately and contact HP to arrange for a free replacement battery by visiting the Battery Replacement program Web site or by calling HP. After removing the recalled battery for their notebook computer, consumers should plug in the AC adapter to power the notebook until a replacement battery arrives.

Consumer Contact: For additional information, visit the HP Battery Replacement program Web site at www.hp.com/support/BatteryReplacement or contact HP at (888) 404-7398 between 7 a.m. and 7 p.m. CT Monday through Friday.

Media Contact: Mike Hockey at (281) 927-9379


Picture of Recalled Computer Batteries


Picture of Recalled Computer Batteries


Picture of Recalled Computer Batteries


Picture of Recalled Computer Batteries

NOTE: Recalled battery packs have bar-code labels starting with GC, IA, L0, or L1

Dell laptop Battery Recall

Dell laptop Battery Recall




Dear Dell Customer,

Dell has identified a potential issue associated with certain batteries sold with Dell Latitude™, Inspiron™, XPS™ and Dell Precision Mobile Workstation™ notebook computers. In cooperation with the U.S. Consumer Product Safety Commission and other regulatory agencies, Dell is voluntarily recalling certain Dell-branded batteries with cells manufactured by Sony and offering free replacements for these batteries. Under rare conditions, it is possible for these batteries to overheat, which could pose a risk of fire.

Potentially affected batteries were sold with the following models of Dell notebook computers or separately as secondary batteries:

  • Latitude: D410, D500, D505, D510, D520, D600, D610, D620, D800, D810
  • Inspiron: 500M, 510M, 600M, 700M, 710M, 6000, 6400, 8500, 8600, 9100, 9200, 9300, 9400, E1505, E1705
  • Precision: M20, M60, M70, M90
  • XPS: XPS, XPS Gen2, XPS M170, XPS M1710

In addition, these batteries MAY have also been provided in response to service calls. The batteries were shipped to customers between April 1, 2004 and July 18, 2006. The words "DELL" and "Made in Japan" or "Made in China" or "Battery cell made in Japan, Assembled in China" or "Assembled in Taiwan" are printed on the back of the batteries.

There is a two (2) step process to identify if your battery is affected:

  1. Check if your battery model MAY be affected. If your battery is not listed, you are not affected.
  2. Check if your specific battery PPID (Dell Part Piece Identification) is affected. This step is necessary to identify if your battery is affected. Only some batteries within each model are affected. If the battery is subject to this recall you will be automatically connected to a replacement order form.
Step 1: Is your battery model affected?

The following battery models, only, MAY be subject to recall:

1K055

C5446

F2100

KD494

W5915

Y1333

3K590

C6269

F5132

OR331

X5308

Y4500

5P474

C6270

GD785 M3006 X5329

Y5466

6P922

D2961

H3191

RD857 X5332
C2603 D5555 J1524 TD349

X5333


C5339

D6024

JD616

U5867

X5875


C5340 D6025 JD617

U5882

X5877


These part numbers are printed on the back of the battery as illustrated below.

Step 2: Is your specific battery affected by this issue?

To determine whether your battery is affected by this issue, you should Click Here.The website will direct you to find and enter an identification number from the back of your battery so as to determine whether the battery is affected by this issue. If the battery is subject to this recall you will be automatically connected to a replacement order form. Dell will also provide a means for you to return the affected battery for proper disposal.

Please note that only the described batteries are subject to this recall and not the notebook computers themselves.

Batteries subject to recall should not be used while awaiting a replacement battery from Dell. You may continue to use your notebook computer using the AC adapter power cord originally provided with your notebook.

Dell apologizes for the inconvenience caused by this issue. Shipment of quality products always has been and continues to be Dell's foremost concern. As always, if you have questions or concerns about this or any other subject, please feel free to contact

Battery Recall --Exchange Program iBook G4 and PowerBook G4

Battery Recall --Exchange Program iBook G4 and PowerBook G4

Apple has determined that certain lithium-ion batteries containing cells manufactured by Sony Corporation of Japan pose a safety risk that may result in overheating under rare circumstances.

The affected batteries were sold worldwide from October 2003 through August 2006 for use with the following notebook computers: 12-inch iBook G4, 12-inch PowerBook G4 and 15-inch PowerBook G4.

Apple is voluntarily recalling the affected batteries and has initiated a worldwide exchange program to provide eligible customers with a new replacement battery, free of charge. This program is being conducted in cooperation with the U.S. Consumer Product Safety Commission (CPSC) and other international safety authorities.

Identifying your battery

Please use the chart below to identify the battery model and serial numbers that apply to your iBook or PowerBook. If the first 5 digits of your battery’s 12-digit serial number fall within the noted ranges, please order a replacement battery immediately.

To view the model and serial numbers labeled on the bottom of the battery, you must remove the battery from the computer. The battery serial number is printed in black or dark grey lettering beneath a barcode. See photos below.

Computer
model
Battery
model
number
Battery serial number range
12-inch
iBook G4
A1061 ZZ338 - ZZ427
3K429 - 3K611
6C519 - 6C552 ending with S9WA, S9WC or S9WD
12-inch
PowerBook G4
A1079 ZZ411 - ZZ427
3K428 - 3K611
15-inch
PowerBook G4
A1078
and A1148
3K425 - 3K601
6N530 - 6N551 ending with THTA, THTB, or THTC
6N601 ending with THTC




Click the images for a larger view.

Note: After removing the recalled battery from the iBook or PowerBook, consumers should plug in the AC adapter to power the computer until a replacement battery arrives.

If you participated in a previous battery recall for any of these computer models or recently purchased or received from Apple an extra battery for an iBook G3, please check your battery serial number in case you received a replacement battery that is affected by this program.

National and regional resellers, catalogers, and Apple's on-line and retail stores sold the computers with the batteries from October 2003 through August 2006. These batteries were also sold separately and may have been supplied as service replacement units.

The Exchange Process

To begin the battery exchange process, you will be asked for the serial number of your iBook G4 or PowerBook G4, the serial number of your battery and a shipping address.

Customers in Australia, New Zealand, South Pacific Islands and Asia (excluding Japan) should contact their local Apple Authorized Service Provider to obtain a replacement battery.

After serial number verification, a new battery will be shipped to you, free of charge. When you receive the replacement battery, please use the same shipping packaging and included prepaid shipping label to return the recalled battery to Apple for proper disposal.

Note: If your battery serial number does not match any of the ranges listed above, you do not have to exchange your battery.

Thank you for your cooperation with this exchange program.

See apple Powerbook G4 notebook batteries click here

Sunday, February 24, 2008

Dell Inspiron 1520 Review

Dell Inspiron 1520 Review


The Dell Inspiron 1520 under review here is the latest 15.4” in an ever-growing succession of what can be categorized as “consumer mainstream” notebooks offered by Dell’s Home & Home Office division. Since the release of the 1520, Dell has also made available a very similar machine, the Vostro 1500, which can be purchased from the Small Business site. Unlike the Inspiron 1520, which can be configured with any one of eight different colors, the Vostro 1500 is solid black. The Vostro also provides a Windows XP option, which is unavailable in the Inspiron 1520.




It should also be noted, for the benefit of anyone who is somewhat new to this website, that there is plenty of additional information on the 1520, including an excellent full-featured review by someone who actually purchased the 1520, as well as a side-by-side comparison of the 1520 and the HP dv6500t; this comparison includes a video that is definitely worth watching for anyone considering the Inspiron 1520, the HP dv6500t or any other 15.4” consumer notebook.






Dell Inspiron 1520 Specs:



* Processor: Intel Core 2 Duo T7300 (2.0 GHz/4MB L2 Cache)


* OS: Microsoft Vista Home Premium


* Hard Drive: 160 GB SATA @ 5400RPM


* Screen: 15.4" WSXGA Widescreen (1680 x 1050)


* Graphics: NVIDIA GeForce 8600M GT 256MB


* RAM: 2.0GB DDR2 SDRAM @667 MHz (2 x 1GB)


* Optical Drive: 8x CD/DVD burner (DVD+/-RW) w/Double Layer Support


* Battery: 9-cell lithium ion >>see more dell laptop battery


* Wireless: Intel 4965AGN


* Weight: 6.4 lbs


* Dimensions: 1.47-1.65” (H) x 14.12 “ (W) x 10.59" (D)


* Ports/Slots: 1 IEEE 1394 (FireWire); 4 Universal Serial Bus (USB 2.0); 8-in-1 Memory Card Reader; VGA Out; S-Video; RJ-45 Ethernet LAN; RJ-11 Modem; ExpressCard 54mm; stereo in, headphone/speaker out and dual digital mics


Initial Impressions








This Inspiron 1520 weighs about six and a half pounds and is considered a mainstream consumer notebook. Though Dell allows customization of the lid in up to eight different colors, our model has a conservative looking black lid. Because of that our machine lacks some of the consumer flair a “Flamingo Pink” lid would have offered. Nonetheless, my first impressions had to do with a couple of things that distinguish the 1520 from its predecessors:



The overall look is very different, in a good way.
The hardware, particularly in the form of graphics processing, will allow the 1520 to perform about as well as any notebook on the market, with the exception of outlandishly expensive gaming machines that lack any concessions with respect to size, battery life and cost.
These two characteristics are what make the 1520 such an impressive achievement. I actually briefly owned the previous Inspiron generation's e1705 model, and reviewed the prior-generation e1405 thin-and-light notebook. I must say, the look of the current lineup is immeasurably more appealing. The old silver-and-white style always got me thinking of things like shag carpet and popcorn ceilings: sure, one can make a case for these innovations, just as one can make a case for thick white plastic trim around a notebook, but in the end (which usually comes within a matter of weeks if not months), the style grows tired, the initial promise hollow. The new Inspiron series design is cleaner, simpler and more tasteful. A cousin of the 1520, which shares its look, is the AMD-based Inspiron 1521.




Purchasing Considerations



Though this notebook was sent by Dell for review purposes and not purchased, I wanted to touch on the above topic, simply because there is something of an art to purchasing a Dell consumer notebook. There are many decisions to make, and like all decisions, they carry with them the opportunity for regret or satisfaction. I heartily endorse this web site’s forums for a little glimpse into the thought, action and subsequent level of satisfaction of other buyers.



As of this writing, deliberately moving along the Dell purchasing highway results in:


An Inspiron 1520 with a fairly basic configuration, but one more than adequate for general media and office tasks, for just over $900.


A deluxe performance configuration, virtually identical to this review machine, for just over $1500.
These prices reflect no special discounts or coupons, just today’s standard upgrades and reductions, which are plainly available to anyone who orders a 1520 today. In any case, at the high end particularly, these prices strike me as very competitive, and a savvy shopper who finds coupons, buys their own memory and times the Dell marketing promotions can do better on price.



One thing I found interesting while configuring a couple of 1520s on the Dell site was the price of a RAM upgrade from 2GB to 4GB: $850. Had I selected a higher-priced starting point, meaning a more full-figured set of warranty and support options, the cost of these 2 gigabytes of RAM would have moved away from the direction of a cool grand, but not by much. I saw no mention of this upgrade including a complimentary iPhone or round-trip flight to London, but it is there and available. That said, I would definitely opt for the T7300 CPU and the 8600M GT graphics included in this review model, if at all possible. While these enhancements will probably add three or four hundred dollars to the final price, they are well worth the cost and will almost certainly give the 1520 a longer useful life.

Monday, February 18, 2008

When the AA or AAA batteries in electronics seem to get low why does it temporarily revive them when you open the cover and swap them around?

When the AA or AAA batteries in electronics seem to get low why does it temporarily revive them when you open the cover and swap them around?


The voltage from a small battery is rather low, typically 1.5v when new and gets lower as they 'wear out'. This continues until the voltage produced gets so low that the device can no longer work.



Low voltage is mostly caused by the battery wearing out, but there is another thing that comes into play in this example.



The other thing is a small amount of oxidization between the batteries and the spring clips that hold the batteries in and make electrical contact. Over time this layer of oxidization builds up between the spring clips and the batteries. Just like a penny is all nice and shiny when new, and gets less shiny when old. This layer of oxidization is not very 'conductive' to electricity and makes it harder for the power to get from the battery into the device.



Here is how this layer of oxidization comes into play. All the time that the batteries are getting weaker (and their voltage is getting lower and lower), this layer of oxidization is getting bigger, and it is causing a further reducing in the voltage that finally makes it to the device. It is actually a combination of the batteries lower voltage (as a result of wearing out), and the increased additional voltage drop through the layer of oxidization that finally reaches a point where the total supplied voltage is too low for the device to work.



So, buy swapping the batteries (actually, you just need to move them around a bit), you physically rub off this layer of oxidization and eliminate the small voltage drop that cause by it. Often, this is just enough to allow the device to work for a little while longer until the battery further discharges.



Oxidization is a well known issue. And it can be avoided several ways: Passing a high current through a connection will 'burn through' any oxidization. Hence, all of the above tends to apply to very low current devices like TV remote controls and not your car's starting battery. (Although, if oxidization gets bad enough, it can effect how your car starts...) Some metals resist oxidization, like Gold. Hence you see 'Gold Plated' connectors on very high end audio cables (note that unless both sides are gold plated, the plug AND the socket, it does not really help :-) Finally, one can try and keep air away from a connection. Every see those special 'wire clips' the telephone guy uses? The ones filled with a jelly? Idea here is to keep air away from the joints and avoid oxidization.



So bottom line, when I am too lazy to get up and change channels on the TV, and the batteries on the remote are wearing out, and I am too lazy to get up and get new batteries. Pulling the battery cover off, and 'moving the batteries around' will often get me though the moment, all without even leaving my chair :-)


A battery behaves like a perfect voltage source in series with an internal resistance, this resistance increases with age and limits the life of the battery. When the battery is taken off load for even a little while, this internal resistance lowers significantly. When the battery is loaded again the resistance rises to at least the same resistance over a short period. Almost everyone has used a torch with an almost flat battery, that seems to light well for a second or two and then dims rapidly. Switching it off then on gives another short burst of brightness. This is electrically similar to removing the batteries from any gadget.



Oxidisation is often used as a scapegoat for battery related problems, however I have never known it to cause a problem in any equipment that is reasonably well cared for, usually and resistance due to a layer of oxide is insignificant compared to the internal battery resistance. A more likely cause is poor spring tension, this can be witnessed by shaking a lit hand torch violently along the axis of the batteries.



Unless the user has very hot hands and changes the batteries very slowly indeed there would not be any significant transfer of thermal energy to the batteries, so heat is unlikely to be the cause.



Please don't throw them in the fire. They really hate that and will seek revenge by maiming you.

Sunday, January 27, 2008

How to select digital photo frame

How to Select digital photo frame


Selection of Digital photo frame


This section describes how do select a digital photo frame. A DPF consists of three main parts: LCD-panel, PCB and frame. All of these components have to be checked. In addition, also accessories and especially usability is important. Therefore, it is recommended to test the models, either by visiting the factory or by buying samples. Besides that it may be important to ask the minimum order quantity and whether OEM is possible. The necessary certificates (FCC in USA, CE and RoHS in Europe) should be a k.o.-criterion for buyers.


1. LCD-panel (Liquid Crystal Display Panel)


For sizes of 7" or below, mostly analogue TFT LCD panels are used. Bigger models usually use digital panels. Their quality is much better. However, the price also goes up. In general 4:3 is better than 16:9, as digital cameras use 4:3. Some models, however, include a button that allows to switch that ratio. The resolution for a 7" frame is usually 480 * 234 pixel (= 480 * 3 * 234 or 1440 * 234). The higher the resolution, the better the picture quality. The important point with panels is to ask whether the panels are new or recycled. For 8" or below, most of the panels are new. For bigger models, some companies use recycled panels. An indirect way to find out whether the panels are recycled is, that for recycled panels no RoHS certificate can be provided. Popular panel brands are Innolux, AU or LG, but also Sharp.


2. PCB (Printed Circuit Board)


The PCB is the heart of a digital photo frame. For the board it is important, which solution is being used on the board. Solution is the used software. Popular solutions are Zoran for the simple function models. For the simple "multimedia" digital photo frame Sunplus, Cheertek (both are originally solutions for DVD players), MTK and Macronix (the original solution for digital photo cameras) are widely used. For the improved "multimedia" digital photo frames Amlogic is usually used. The solution is just the technical background. For the user the outcome is important. The solution decides which file types and which cards can be supported. It also decides whether a built-in-memory is possible.


2.1. Supported cards


For digital photo cameras different kinds of memory cards exists. Different brands use different cards.



It is hard to find information about the market share of memory cards. However, I find one statistics which shows the market share of memory cards in Western Europe in 2004. I assume that the market share for the cards is not significantly different in the USA. In 2004, 25 million digital photo cameras have been sold in Western Europe.



Top 5 producers 2004
















































Company Market Share Memory Card
1. Canon 16.8 % SD
2. Sony 14.0 % MS
3. Olympus 12.5 % xD
4. Nikon 10.4 % SD
5. Fuji 10.0 % xD
6. Others 36.3 % mainly SD

Some older cameras also use CF or SM cards. In addition, a USB host can be important, as many people use USB memory sticks. A USB host should be standard for multimedia photo frames. A USB host can be an alternative if the photo frame does not support all memory card. With a USB host, a card-reader can be bought additionally. Therefore it indirectly can support all memory cards. High-end products also have a USB slave.


2.2. Supported file formats


Digital cameras uses JPEG file format to store the pictures. However, a lot of more file formats exists. This point will give you a short overview:


Picture formats



For digital photo frame, JPEG pictures are standard. All products can display JPEG as this format is the file format used by digital cameras to store pictures. Some photo frames can also display BMP, GIF, PNG or TIFF. However, these file formats are not commonly used for pictures and therefore not very important.



Audio formats



For multimedia photo frames MP3 is standard. Notable here is that for an export to Europe the Sisvel license is necessary. Some products can also play WMA (also widely used in the Internet) or WAV-files. WAV files are usually very big and therefore not widely used, especially for sharing in the internet.



Video formats



Standard video format which are supported are AVI and MPEG I, II and IV, but also MP4. Even if the manufacturer assures that AVI or MP4 is supported, the photo frame may not display all AVI or MP4 files. This is because AVI and MP4 are file containers and no file format and may contain many files in different codecs, which the photo frame may not be able to read.



Other formats



Some products, especially Amlogic solutions, can display text files in the txt-format. For some newer models, even lyrics for MP3 are supported.


2.3. Built-in memory


Built-in memory can be very useful. Only this way, data can be stored in the machine directly. Currently the maximum capacity is 2 GB. Cheertek solution can maximum support 32 MB plus 3 screen protection pictures, which can not be changed. Sunplus does not have any internal memory, but it can store 3 pictures which can be changed. Some solutions do not support internal memory at all.


2.4. File management


Better photo frames can also manage the files. Therefore it is possible to delete, rename and copy files between the cards and internal memory.


2.5. Extras


Some models offer some extras such as calendar, clock, alarm, auto on/off or a voice recorder. The solution also decides whether the photo frame has AV in/out. With AV out, the pictures on the photo frame can be watched on a TV. With AV in a DVD player can be connected with the photo frame and it is possible to watch movies on the DPF.


3. Frame


The digital photo frame is as much furniture as it is an electronic product. Therefore the outside appearance is important. Many customers will base their buying decision on the outside appearance. Usually frames are made of plastic (often with a transparent, outside acrylic frame). These frames can be made in every colors. Additionally, also wooden and metal/aluminum frames are common. Many companies charge more for wooden frames.



Some companies offer specialties such as light in the frame. Some companies also offer changeable frames and deliver more frames for one DPF.


4. Accessories


Accessories, such as additional frame plates, cables etc. should be considered.


5. Usability


A very important aspect is the usability. Therefore testing is recommended, either by factory visit or by buying samples.



Simple function models usually do not have a remote control. They are operated by buttons on the machine. The buttons should be easy to operate.



More complicated models use a remote control with OSD (open screen display) menu. This interface has to be user friendly and easy to operate with and without remote control. As for the remote control, it should not include too many buttons.


Reprint From http://www.global-battery.co.uk/How-to-Select-digital-photo-frames.htm
http://www.bloglines.com/blog/batteryinfo?id=85