Tech Topic: Extending Laptop battery Life

I just bought a new Compaq Presario CQ35 -109Tu(that was a mouthful) which came with the standard 6 cell battery. So far it has been able to give me an average of 1.5 to 2 hour usage time. That is pretty decent enough but it would still be great if it could last a little bit longer than that. I tried looking around ofr 9 cell and 12 cell replacements for it and found that they could cost between $56 to $149 shipping cost not included. That is quite a hefty sum to pay for extra juice. So for the meantime while I am saving up for the battery upgrade I looked around for the best way to maximize Mr. Q's Battery life. :) Cool thing is I really didn't have to go far to do this. HP had a lot of the answers that I needed.

Here is what they had:

Steps to maximize the life of your battery

There are actions you can take to make your battery last longer during each charge cycle and live longer over many cycles. HP always recommends following the instructions for charging and storage that came with the battery or notebook.

Manage battery power more effectively in Windows Make sure your battery gives the power you need, when you need it. Power Options in Windows XP/Vista/7 allow you to control the power management features of your notebook PC.

Tips for conserving battery power on notebook PCs

You can manually change the power consumption of your notebook PC and conserve battery power.

Reduce the brightness of the screen to the minimum readable level. Use the Fn and F7 or F8 keys to adjust the brightness.

Remove peripherals when not in use. External hard drives, CD-ROMs, Zip drives, PC cards, and other peripheral devices can draw power from your battery even when they are not in active use. Disconnect them when you have finished using them.

Reduce the speed of your processor. The faster your computer works, the more quickly it uses up the supply of power. By cutting down on processor speed, you can extend the charge of your battery. Methods to reduce processor speed vary from model to model, and your manual should provide instructions for doing so.

Turn off the Wireless On-Off button when it is not in use. If your notebook has one, press the Wireless On-Off button so that the light turns off.

Battery care practices
Battery cells suffer gradual, irreversible capacity loss over time. Such aging occurs more rapidly as temperature and discharge loads increase. Here are some suggested ways to minimize the capacity loss for your battery.

Store Li-Ion batteries between 20°C and 25°C (68°F and 77°F) with 30% to 50% charge. Do not leave batteries exposed to high temperatures for extended periods. Prolonged exposure to heat (for example, inside a hot car) will accelerate the deterioration of Li-Ion cells.

Remove the battery if the notebook will be stored (turned off and not plugged into AC power) for more than 2 weeks.

Remove the battery if the notebook will be plugged into AC power continuously (via a wall adapter or docking station) for more than 2 weeks.


Note: Recommendations for battery use and storage are covered in the HP User Guides for each model.

Calibrate the notebook PC battery
Short discharges and recharges do not fully synchronize the battery's fuel gauge with the battery's state-of-charge. This can result in the amount of power available in one cycle being less than expected or the battery meter being inaccurate.

Under normal usage, batteries should be calibrated a minimum of once every 3 months. Your battery can be calibrated by following these steps:

Step 1 - Disable the Windows Power Management
In Windows, right-click the Desktop and select Properties in the menu list.
Click the Screen Saver tab and then click the Power button.
Under Power schemes, select Always On in the drop down menu.
Under Settings for Always On power scheme, select Never in each of the drop down menus.
Click OK on the Power Options Properties window and then click OK on the Display Properties window.

Step 2 - Fully charge the battery
Connect the AC adapter to the notebook.
Charge the battery until the Windows battery meter is at 100%.

Step 3 - Fully discharge the battery
Remove the AC adapter.Keep the
notebook on until the battery has completely drained and the notebook
automatically turns off.
Connect the AC adapter to the notebook.
Keep the AC adapter connected to the notebook until the battery has completely
charged.

Step 4 - Enable the Windows Power Management
In Windows, right-click the Desktop and select Properties in the menu list.
Click the Screen Saver tab and then click the Power button.
Under Power schemes, select Portable/Laptop in the drop down menu.
Click OK on the Power Options Properties window and then click OK on the Display Properties window.

Note: After completing the steps above, your notebook PC battery will be calibrated.

Following this actually helped me out a lot but if you really want to get the best battery life for your laptop and you have money to shell out, getting a battery upgrade either 9cells or 12cells would be the best. I also would have bought the ACER timeline series, since they last for 8hours, but they were Php5,000 beyond my budget and I really needed the 2.0Ghz processor power for the amount of multitasking that I had to do for work and blogging. :) The Acer timeline that was at 13.3 inches only had 1.33Ghz and no DVD player. Mr. Q had that and even lightscribe (this is used for labeling Dvds). Since the only issue I have is that Mr. Q can't last for long I just have to make sure that I get to work in places where an outlet is readily available :)

If you have any laptop battery tips to share please do share it over here. I would love to hear some more and am sure others will too. :)

Here are the links to some articles that I have found you useful as well.
9Hour battery Setting
Extending Laptop battery life - yugatech

Hope that this helps you guys out with your laptop battery concerns :) Till the next time. xoxo