With so many brands and models with varying specs now available, your quest will require knowledge and above all patience. To help you in your quest here are a few points to consider before purchasing a High Definition TV:

1. Size Does Matter

Sometimes the bigger does not mean better. Each HDTV size, be it a Plasma or LCD TV, has an optimal viewing distance. Determine the distance between the TV to where you would normally watch it and use the table below to determine what size TV will best suit your needs.

Based on the Lechner Chart

2. Viewing Angles

Normally we sit looking direct at the TV set, but you also need to think of guests and family members. For instance, it’s worth taking into account that Plasma TVs have better views from obtuse angles compared to LCD TVs where viewing quality is reduced from such angles.

3. What HDTV Technology should I Choose?

As you’ve probably gathered, HDTVs have two main technologies: Plasma and LCD. But new technologies have emerged since HDTV’s early days. Technologies like OLED and Rear Projection are now available but should really only be considered in very special cases.

LCD TVs are the more popular of the two HDTV technologies, with the widest range of screen sizes and an improved picture performance. LCD HDTVs are suitable for brighter rooms with large windows as they reflect less light.

Over the years LCD HDTVs dominated the sales in the mid/low size range forcing Plasma TV manufacturers to refocus their efforts on larger TV set. If you are thinking big (we’re talking 50 inches plus), you want to look for a Plasma TV. It is important to remember that Plasma is not the best choice for rooms with too much light in, as the glass on the screen reflects direct light more readily than LCD screens.

4. Resolution

Thanks to the Blu-ray revolution and the next generation of game consoles (particularly PS3 and Xbox 360) resolution is a key feature in HDTVs. For serious gamers a Full HD with 1080p is undoubtedly the best option but, again, viewing distance remains a factor because from 12 feet, a normal person with a perfect eye-sight cannot tell the difference between a 720p and a 1080p TV regardless of size.

5. Contrast Ratio

Very simple tip here: when it comes down to contrast ratio the higher the better.

And with that, we’ve covered all the basics you need to know before purchasing your first HDTV.

1. Ship shape with a defrag

Regular defragmentation helps to arrange data more efficiently thus making the hard drive work less to access the data. The quicker the moving hard drive works lesser is the load placed on the battery. Thus, your batter can last longer. The effect is minimal, but this efficiency goes hand in glove with hard drive maintenance.

2. Kill the resource gobblers

End the background processes that are not vital. Monitor the resource usage through a ‘Ctrl-Alt-Del’ which brings up the Windows Task Manager (in Windows). If you’re not on the internet, it is safe to shut down the immediate non-essential programs running in the taskbar like the antivirus and the firewall. Weed out unnecessary programs running as start-ups by launching the System Configuration Utility from Run – Msconfig – Tab: Startup. Uncheck the programs which you don’t want to launch and reboot the computer once.

3. Pause the scheduled tasks

It may be a defrag or a virus scan, but make sure it is scheduled for a time when you are near a power outlet. If not then nix them for the moment.

4. Unplug external devices

USB devices are the biggest drainers of battery power. Unplug all external devices like an external mouse, PC cards, Wi-Fi, external speakers, Bluetooth and even an attached iPod.

5. Empty the CD/DVD Drives

Even if you don’t intend to use it, don’t leave any CD/DVDs as leftovers in the drives. A spinning drive sucks battery power like a sponge.

6. Go local

Desist using the DVD/external drives while running on batteries. Shift the content to the hard drive or run using (free) virtual drives like Pismo File Mount or even Microsoft’s Virtual CD ROM Control Panel.

7. Lower the lights

The LCD screen of a laptop is another huge power sink. Calibrate the brightness to the lowest level you can tolerate using the Function key toggles or using the Display Settings applet in the Control Panel.

8. Kill the sounds

Mute the speakers and try avoiding the use of multimedia software to maximize the battery life. Installed sound schemes also drain a battery perceptibly.

9. Rid the screensaver

To maximize battery life by a little, switch off the screensaver.

10. Visit Power Options

Get familiar with power management through the ‘Power Options’ applet in the Control Panel. Both XP and Vista come with advanced power management features which shut off components like the monitor and/or the hard drive after specified intervals. This again depends on the chosen ‘Power Schemes’ (for XP) in the same applet. For instance in XP, ‘Max Battery’ under Power Schemes can be selected for maximum battery optimization.

11. Turn off the looks

Today’s OS’s like Windows Vista come with features like ‘Aero Glass’ which are resource guzzlers. One can turn it off and go for the ‘Classic’ appearance which consumes less power. In Vista, click on Desktop – Preferences – View Colour – Appearance – Classic Appearance and Windows Basic graphical interface. In XP it’s – Display Properties – Theme – Windows Classic.

Linux and even Macintosh are better optimized for longer battery life.

12. Hibernate is better than Sleep

In the Stand By mode (or sleep mode), the computer turns of the hard drive and the display but memory remains active while the CPU slows down. This draws on the battery. In contrast, hibernation mode is better because the computer saves the current state and shuts itself down completely thus saving power.

13. Get the most…work on the least

Working on too many programs while on the battery is a sure fire power drainer. Keep use of graphic intensive applications to a minimum. Working on a spreadsheet consumes much less than playing your favourite game. To increase the life of the battery open just one or two programs concurrently.

14. Ram in more RAM

Adequate RAM reduces the load on Virtual memory which by default resides on the hard drive. Though every extra bit of RAM uses up more power, it increases overall savings by short cutting access to the power hungry hard drive.

15. Keep it clean

A laptop with blocked air vents will generate more heat thus reducing the life of the battery. Clean the air vents regularly to keep operating temperatures low. Allow for open space around the vents for air to circulate freely. Keep the area around the laptop clean to avoid entry of dust.

16. Temperature is a silent killer

Undue heat kills off a battery slowly but surely. Avoid leaving the laptop under direct sunlight or inside a closed car.

17. Avoid the memory effect

A problem more for the older Ni-MH batteries than for Li-Ion batteries on which most modern laptops run. Memory effect relates to the loss of battery charge when they are repeatedly recharged after being only partially discharged. It can be prevented by discharging the battery fully and then completely recharging it. Li-Ion batteries on the other hand have no problems with partial discharges and re-charges and complete discharge is never recommended for this type.

18. Update software and drivers

This sounds a bit incongruous but then newer drivers and software are often designed to be more efficient (and hopefully less resource hungry).

19. Use the right adapter

Ensure that the adapter you use to charge the laptop battery is an original one or one with the correct specifications. A mismatch in the wattage could cause an overload thus damaging the laptop and the battery.

20. Pack it up

If you don’t plan to use the laptop on batteries for quite some time, ensure that the charge is nearly 40 percent – remove the batteries and store it in a cool place.

A typical lithium ion battery has an overall average life of 2-3 years. With some care and caution, its mortality can be delayed.

Have you found your own way to increase battery life of your laptop? Share the ‘life giving’ tips with us in the comments.