March 2009

Dell Latitude D410 battery specs

By laptopsbattery - March 22nd, 2009, 15:05, Category: General

Dell Latitude D410 battery specs


  • Provides 53 WHr capacity as inspiron 6400 battery
  • Reliable power means dependable performance
  • Power up your system for business trips and vacations
  • This product has been tested and validated on Dell? systems to ensure it will work with your computer
  • Supported by Dell Technical Support when used with a Dell system .

Tech Specs :
Device Type: Notebook battery
Width: 5.5 in
Depth :3.5 in
Height : 0.8 in
Technology: 6-cell lithium ion laptop battery
Voltage Provided: 10.8 V
Capacity: 53 Wh
Max Recharge Cycles: 500

Over View :
Smart Lithium-Ion Latitude D410 batteries are longer lived than conventional batteries and do not require replacement as often. The Dell? 6-Cell Smart Lithium-Ion Primary Battery has internal circuit board with chips that allow it to communicate with the Laptop to monitor battery performance, output voltage and temperature. It also gives the Laptop much more accurate 'fuel gauge' capability to determine how much battery runtime is left before the next recharge is required. This product has been tested and validated on Dell systems. It is supported by Dell Technical Support when used with a Dell system.

Manufacturer Part# : Y5179
Dell Part# : 312-0314

Customer Review :

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Hacking IBM Thinkpad Bios Password

By laptopsbattery - March 18th, 2009, 21:23, Category: General

Hacking IBM Thinkpad Bios Password

Lost your IBM   ThinkPad Supervisor password? No problem, on this page i will show you how   to recover your old password.

Although IBM claims their TP BIOS passwords are impossible to break,   there is a easy and cheap way to fix this.

The stuff you need cost about 5 $ at your closest radio shack type of store.   Also you need a spare PC with a serial port.

This article is based on a IBM ThinkPad T42. There are no   guarantees and you might end up destroying your TP. So continue at your own   risk. Other models this ought to work with are:

  • 240, 240x
  • 390E, 390x
  • 570, 570E
  • 600e, 600X
  • 770Z
  • A20m, A21e, A21m, a22m, A30p, A31, A31p
  • G40, G41
  • R30, R31, R32, R40, R50, R51
  • Transnote, T20, T21, T22, T30, T40, T40p, T41, T42, T42p T60
  • X20, X21, X22, X23, X24, X30, X31, X40, X41 Thinkpad X60 battery

The supervisor (SVP) password is stored in a chip called ATMEL 24RF08.It can not be reset by disconnecting the BIOS   battery or shorting any jumper. It has to be read in order to deciffer the   password. For this we need some kind of hardware so read on…

Soldering the ATMEL 24RF08 Chip reader

To read this chip we need to interface with it using a secondary computer and   some simple electronics. You will need to purchase this:

  • 2 x 2200 Ohm Resistors
  • 2 x C5V1 Zener diodes (For example BZX55/C5V1 )
  • Serial Port 9 pin Female

The serial port can be salvaged from any old PS2 type mouse. The zeners and   resistors can be found in scrap electronics, but they are rather cheap so i   would not bother. Solder them according to the image below. Leave the wires   leading to SDA , SCL and GND. These will be connected to the TP later.

  Here   is a simplified schematic for those unfamilliar with the above symbols:

Locating the ATMEL chip

Usually the ATMEL chip is located somewhere below the touchpad. Start off by   remving the keyboard and mousepad. This is done by unscrewing a couple of screws   located under the TP. It is quite clearly illustrated on the bottom side of your   ThinkPad.

Pull the TP keyboard up and let it rest against the screen. Pry off the   touchpad part and fold it over where the keyboard used to be. Remove the WiFi   card.

Under it all you should find a chip with something like this printed:




Heres a closeup of the Atmel chip.

Locating the Atmel Chip

You can see the Atmel right under were the Wifi card used to sit:

Soldering the ThinkPad

Now this is the tricky part. You will have to solder 3 wires to the   motherboard of your Thinkpad T61 battery. Two wires to the ATMEL chip and one to ground. The   ground is a piece of cake, just solder it anywhere you can find ground. The   mounting screw holes on the motherboard is a good place. Solder 3 wires   according to the image below:

As you can see, the SCL and SDA are located right next to eachother. It can   be difficult to hold them in place while soldering. I have used some tape to   hold them in place. The tape can be left there to minimze the risk of pulling   off the soldered wires during the next steps.

Leave these wires unconnected and make them ready by peeling off the   insulation. These will be connected to the reader ciruit later on. Make sure   they can not reach ground or short circuit in any way.

Preparing the spare PC

You have made the hardware to read the chip, so now you need to supply the   software. There is this great sofware made by that can be found   here: - Select R24RF08 v2.0b - Reader for ATMEL 24RF08 (Freeware)

While you are at it, download the Supervisor Password decoder IBM   Pass 2.0 Lite found here: Inspiron 1520 battery

Also great software made available by .


Softpedix wrote that the download mirror has limited bandwidth. If you can’t   download with the above, try these: –   Programmer – IBMpass   Lite

Install the software.

Connect the ATMEL chip reader to the spare PC.

Fire up a command promt(Start->run type cmd) and navigate to the folder   where you installed R24RF08 v2.0b. Type in (don’t hit   Enter):

r24rf08 dump.bin

Dumping the password

  1. Turn on your ThinkPad with all the wiring you just soldered.
  3. Press F1 during the startup to enter the BIOS.
  5. Wait untill all activity stops, blinking HDD leds and such.
  7. Connect the ATMEL Chip reader. GND first then the SDA and SCL.
  9. Now go to your spare PC and Hit enter on the command prompt.

Now there should be a file created in the same folder with the name dump.bin.   Disconnect all the wiring off your TP and assemble it back together. This test cant fit for latitude D410 battery.

Decoding the Supervisor Password

On your Spare PC start the program IBM Pass 2.0 Lite. Load the file you just created (dump.bin). Navigate with the   scroll list to the memory address of 0×330. Tada! It should look something like   this:

The article is from:

How to replace the HDD on the Aluminum MB and MBP

By laptopsbattery - March 17th, 2009, 13:38, Category: General

How to replace the HDD on the Aluminum MB and MBP

Hi everybody, I was thinking about replacing my HDD on my aluminum Macbook Pro 13 recently, and I thought it might be interesting to make a guide for all of those that have an alu-MB or MBP and would like to replace the HDD. You are going to need a 2.5inch laptop HDD, in the SATA format.  I haven't upgraded it yet, but I'll show you a step by step process on how to replace it.

Step 1: To replace a HDD, you need to turn the computer completely off.

Step 2: Make sure that you have your data backed up to an external HDD, via Time Machine or Carbon Copy Cloner.

Step 3: You are then going to flip the notebook over. Be sure to have a cloth or towel on the surface you're laying to notebook on, to prevent any scratches.

Step 4: Now, you are going to flip the tab up that is near the bottom of the notebook. That will release the battery/HDD cover.

Step 5: Now that the cover is off, you are now going to unscrew the HDD screw. There is only one screw that you have to remove to replace the HDD.

Step 6: You then want to pull on the clear tab, to get the old HDD out of the notebook ( cant fits for Latitude D410) . Be careful not to damage the SATA connector pins while taking it out. Safely disconnect the HDD from the connectors.

Step 7: Now take the new HDD, and insert it into the HDD bay. Connect the approiate connectors to the HDD. It will be obvious on what to connect, because it's just like matching up batteries in a TV remote.

Step 8: Now that you have the new HDD in, put the cover back on the back of the computer ( Dell inspiron 6400). Make sure that the cover is flush with the rest of the notebook, with no slight edge or the like. The tab will go back down automatically when you attach the cover.

Step 9: Flip the computer back over, and boot the system up. If you have a Time Machine backup, insert you Mac OS X install disc, and wait for the installer. You then will want to go up to the menu bar, and select "Restore". laptop battery Make sure you have your Time Machine external HDD connected at this time. You will then go to Time Machine, and select the date to where you want to restore your system. Then you will be set, and ready to go.

If you are using Carbon Copy Cloner, and you already cloned your HDD, then it will be just like using your original HDD. You won't need to use your Mac OS X install CD at all.

You now have installed your new HDD into your Aluminum Macbook or  Macbook Pro. Enjoy!

The article from notebook review

8 cells Aspire One battery only last 4.5 hours

By laptopsbattery - March 15th, 2009, 13:34, Category: General

8 cells Aspire One battery only last 4.5 hours

Acer has the best selling netbook on the market with its Aspire One. The company has announced a new version of the netbook called the Acer Aspire One 10 that has a larger 10-inch screen. The first real problem for the netbook was the sort of problem buyers will like as the first set of netbooks shipped has a higher capacity battery.

The first group of Aspire One Tens has a 6-cell battery with 5800mAh of power. The battery that was supposed to go in the netbook offers 6-cells but only has 4400mAh of power. Laptop Magazine tested an early One 10 sample with the larger capacity battery and found the thing ran for nearly eight hours on a single charge. Latitude D600 battery

When the 4400mAh battery that was supposed to be in the system showed up and testing got underway, laptop found that it lasted a much less robust 4 hours and 24 minutes. That runtime isn’t bad, but when you consider that Asus makes Eee systems with longer run time for only a bit more the Aspire One 10 doesn’t look as good as it used to. Acer trust me you just need to ship the machines with the 5800mAh battery and be done with it.

Previously on As The Battery Life Turns, we tested the battery that came with our review unit of the Acer Aspire One 10-inch and got a result of 7 hours and 57 minutes, which blew away every other netbook battery out there.  This was due not only to the number of cells in the battery (6) but the high capacity of the cells (5800-mAh/milliamp-hours).

Oh, but wait.

We then discovered that the Aspire One was supposed to ship with a lower capacity battery — still six cells, but only 4400-mAh.  The better laptop battery will only come with the first batch of Aspire Ones, so customers that pre-ordered them may get lucky. Everyone  else will get the “normal” battery. VGP-BPS5

This week we were finally able to test the 4400-mAh battery most Aspire Ones will come with.  We previously predicted that it would get between 4.5 and 5.5 hours.  The result?
(cue Dramatic Pause)


Yes, it is a bit disappointing, but 4:24 is still decent, particularly for a $350 netbook.  However, for $50 more you can buy the Eee PC 1000HE that gets more than 7 hours (and has a much improved keyboard).

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Revive laptop battery

By laptopsbattery - March 13th, 2009, 15:23, Category: General

Revive laptop battery

In the last revive dead laptop battery article, we know how to revive dead laptop battery with temperater changing its cell active. Now let me introduce another method to revive your dead laptop battery.

Here is a way to revive your old battery pack. Usually the   laptop battery is the first part to break. On older laptops a new battery   pack can cost more than the PC itself, so buying a new one is no   option.

I have had different results with different battery packs, but the usual is a   50-70 % increase in time running on batteries. My personal experience is   that NiMh batteries are much easer to rejuvenate than LiIon.

There are no guarantees and you might end up destroying your Battery pack. It   might even explode, so continue at your own risk.

Revive laptop battery Step 1 - Drain the battery

Remove the AC adapter and let it run until the VGP-BPS2 battery is completly empty.   You can turn off all power saving features to speed things up. When it goes in   to sleep mode, try to turn it on until you get no response at all.

Revive laptop battery Step 2 - Drain the battery even more

Using a low wattage 12v lamp (car brake light for example), you can empty the   battery pack even further. Check the voltage of your battery pack, and use a   lamp with a suitable voltage. Remember not to use a lamp with too high wattage   as this could damage your batteries.  Also, be careful not to short circuit. You   will need to figure out where the ground and + voltage is. On this IBM thinkpad   batterypack they are located on the opposite corners in the connector.

Paperclips are ideal to connect the lamp to the VGP-BPS5 battery connector.

Let the lamp shine until you see it going slightly dimmer. It is important   not to drain it too much (especially Li-Ion).

Revive laptop battery three:  If you are the cautious type, you can hook up a multimeter and measure the   voltage. I usually don’t like to bother, but you can calculate how much you can   drain (Skip if if you don´t care that much):

For example if your battery has 9,6 Volts printed on it:

9,6 / 1,2 = 8 cells
8 x 0,6 = 4,8 V.
So, it’s safe to drain this 9,6 V pack to 4,8 V.

Step 3 - Recharge
Now it’s time for the for the fun part. I like to log just about everything   to track the results. If you like that too, just download and run apmmowin before inserting the latitude D600 battery. The output can be redirected to a file like   this:
apmmowin > cycle1.txt
Recharge to 100%, and repeat from Step 1.

Before the discharge / Recharge cycles the battery time fell drastically from 60% to 10%. Afterwards the drop has dissapeared and the discharge rate is much more constant.

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Buying Second-hand charger Tips

By laptopsbattery - March 9th, 2009, 15:50, Category: General

Buying Second-hand charger Tips

Buying a second-hand battery charger can save your money. Everyone loves a good bargain. Don’t let your good deal become a bust by observing these simple rules of caution.

How many hours operated This may seem like an unreasonable request. Although no one will be able to tell you exactly how long they have been run. The owner should be able to tell you how it was second-hand and how often. Doing some basic calculations will give you a ballpark idea. For example a charger that charged a battery overnight once a week for ten years would be 8 hours x 52 weeks x 10 years would be 4160 hours. This figure is really useful to compare two or more chargers that you may be looking at but you can use it as a feel for just how good of a bargain you may be getting. The reason behind this is that the longer an electronic device is run the more likely it is to fail. Just like the human body as we age the more likely something is to fail. Two items that add to the shortening of an electronic devices life is high voltage and constant turning off and on. VGP-BPS5 Chargers provide and do exactly these two things.

A unit that is turned off and on many times will not run quite as many hours due to the stress of heating and cooling on the components. Constant temperatures help prolong electronics. If you have ever been in a room full of computers such as servers the administrators will have the room at a constant cool temperature. It is the same idea.

How clean is it This may sound silly bit it is actually quite important. Electronic devices love to attract dust and dirt. Years of sitting in a garage can build up layers of dust and plug up vents. This covering can make VGP-BPS2 chargers heat up higher than they are supposed to and possibly shorten the life of your device. Although this is impossible to detect by buying through ebay or some other site as most sellers will have cleaned up the devices on the outside. It is, however, useful for buying from Craigslist or a yard sale or some other avenue where you can actually see and touch the device.

Age may determine options This almost goes without saying, but it is worth keeping in mind. The age of the machine can determine what bells and whistles it has. If you need just a basic laptop battery charger that you don’t mind putting on a timer yourself or can watch the time to shut it off then this shouldn’t matter. However if you need a charger that automatically changes over to trickle mode after a 80% charge then you need to keep age in mind.

Buying a second-hand battery charger can be a bargain. Most everyone can agree that a bargain can be found buying second-hand. There is always a risk, however. Keep these tips in mind when buying from Ebay, Craigslist, yard sales or anyplace place to buy second-hand.

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Battery Maintenance

By laptopsbattery - March 5th, 2009, 15:19, Category: General

Battery Maintenance

Laptops are among one of common electronic gadgets in use by people these days. It represents set of those multipurpose electronic devices used for work, entertainment and business. People want to get the maximum benefits of all the functionalities provided by them. For that, all modern laptops come with high power Li-Ion inspiron 1501 batteries with long backup duration. However, the backup time claimed by the manufacturer may increase or decrease, depending on their use and maintenance.

To increase existing backup time or maintain the health of your laptop battery, follow these tips:

Use your vgp-bps2 battery in the proper conditions - Generally speaking, batteries work best at around 68°F (20°C), but temperatures between 32° to 95°F (0° to 35°C) will allow a battery to works in good condition too. Allowing your battery to work in conditions that are too hot or cold can lower its performance. It may also have a negative influence on the battery's lifespan as well.

Store your battery in the proper conditions when not in use - If you don't plan to use your notebook for a month or more, we recommend the battery be stored separately in a clean, dry and cool place. Please also ensure that the laptop battery has about a 70% charge remaining. During storage the battery will perform a slow self-discharge, so we do not recommend storing it for a very long time (3 months or more), because it can impact the wellbeing of the battery.

Important Information Regarding Laptop Batteries

Higher capacity battery or spare batteries - Some notebooks may be offered with an option on a higher capacity battery, which may also be offered as a separate purchase. You can take advantage of both to extend your notebook's unplugged time.

Replace the battery - A VGP-BPS5 battery that has been cared for properly should provide at least 300 full charge and discharge cycles. You can choose to purchase a replacement battery when your original battery longer is no longer able to serve you properly. The main symptom of this is a much shorter runtime even after calibration.

Battery recycling - Please do not dispose of old notebook batteries in the rubbish bin as they can pollute the environment. Batteries should be recycled or collected for safe disposal through your local municipal or commercial programs.

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Battery recycle

By laptopsbattery - March 2nd, 2009, 18:01, Category: General

Battery recycle

Battery is generally cylindrical in shape with two terminals, one positive electrode and one negative electrode that conduct electricity along with a substance called electrolyte, that works on the electrodes, chemically and help convert into electrical energy. There is a copper wire that connects the two electrodes. Materials that are used in batteries are carbon, alkaline, chlorine, lithium ion, lead, nickel, sodium, silicon, copper, etc.

Batteries are classified into two- Dry cells and wet cells. The wet cell batteries are also termed storage battery ( VGP-BPS5) as they can be recharged as many times as possible. Batteries are also divided as rechargeable and non-rechargeable or disposable batteries. The second type is again termed as primary cells, used till the chemical that produce the electrical current supply is fully consumed, at which point the battery is not needed anymore. These types of batteries are used very commonly in small and portable piece of equipments that drain low current.

The other type is rechargeable or in other words secondary cells that can be "refueled" even after being completely consumed. For recharging, these batteries need some external help from devices as chargers or re-chargers.

In the present world due to the development of science and technology almost everything (papers, plastics, batteries, aluminum, etc.) can be recycled without wasting it by just throwing it after use. Thus we see that recycling is a procedure by which waste products are recovered for reusing, which is also known as waste management.

Laptop Battery recycling falls under electronic waste or e-waste. Here any discarded, broken or unwanted electrical or electronic equipments, containing toxic materials are recycled for further use. Batteries like, nickel-cadmium, lead, lithium batteries are made to reuse as the chemicals present in them can cause harm to the environment if allowed to stay long in open air after being discarded by the users. Moreover batteries are regarded as the most expensive energy source and their production requires much valuable recourse, so they are recycled so as to restore those valuable materials from those old and used batteries through battery recyling.

Cadmium is a heavy metal and can cause pollution if burned or cremated. To avoid lead pollution lead-aced batteries are processed. This program is considered to be highly successful. Lithium-ion can be very dangerous if exposed to high temperature or sunlight, it can ignite or explode. Therefore battery recycling is a must if we want to protect our environment.

The Recycling Process:

First of all, the batteries to be recycled are sorted according to chemistries such as nickel-cadmium, nickel-metal-hydride, lithium, alkaline etc. The combustible material, such as plastics and insulation, is then removed with a gas fired thermal oxidizer, which is the first step in the recycling process. Most recycling plants have scrubbers where the gases from the thermal oxidizer are neutralized to remove pollutants, producing clean, naked cells that contain precious metal content.

The metal in the inspiron 6400 batteries are then heated to liquefy, after they have been hacked into little pieces. Black slag left by burned out non-metallic substances are scraped off with a slag arm, and the different alloys that settle according to weight are skimmed off. Some plants pour the liquid metals directly into (65 pounds) or 'hogs' (2000 pounds) without separating on site, which are then shipped to metal recovery plants to produce nickel, chromium and iron re-melt alloy for the manufacturing of other metal products.

State and Federal Regulations in the United States:

The Mercury-Containing and Rechargeable Battery Management Act was passed in 1996 by the U.S. Congress which requires regulated batteries such as Ni-CD batteries and sealed lead-acid batteries to:
1. be easily removable from consumer products to make it easier to recover them for recycling
2. include in the label the battery chemistry, the "three chasing arrows" symbol, and a phrase that instructs users to properly recycle or dispose the battery
3. provide national uniformity in collection, storage, and transport
4. phase out the use of certain mercury-containing batteries

By recycling batteries the environment is not being polluted nearly as much, many natural resources are saved due to the rechargeable laitude d620 batteries also. There is a large variety of websites on the Internet with more quality information on recycling batteries.

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