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How to extend a battery life between charges? What is the Run-time? or How long should my new rechargeable battery last?

How long should my new rechargeable battery last?
What is the Run-time? or
How to Extend a battery life between charges?

How long should my new rechargeable battery last?

The life of a battery under normal use is based on discharge cycles times. This is between one and a half to three years of battery life for the average user. As the rechargeable battery begins to fail the running time of the battery will begin to drain. When a battery can supply only around 30 minutes of charge without multimedia application, it is time for a new replacement.

What is the run time of a battery? How long will my laptop stay powered with the battery?

Run time varies between each laptop. This makes it difficult to tell exactly how long a battery is will last. There are several other factors that affect a batteries run time:

(a.)The chemistry and capacity of the battery (Li-ion, Ni-Mh, Ni-Cd)

(b.)How old your laptop battery is.

(c.)The number of times a file is saved or retrieved from the hard drive or DVD Rom drive.

(d.)The type of software being run, i.e. some applications such as games, graphical software or wireless networking will dramatically reduce run time.

But for overall, a realistic predict of run-time for our laptops is between 1.5-2 hours (4400mah), 3-4 hours (7200amh) , 5-6 hours (10400mah) etc

How to Extend a battery life between charges?

The tips I have outlined above should lengthen the amount of time before you need to replace your laptop battery. On a day-to-day basis, however, you should be far more concerned with another type of battery life: how long you can keep your laptop running without AC power. You may know most of the following tips already, but it never hurts to refresh (or recharge) your memory.

Dim your screen: Your laptop backlight uses a lot of juice. Keep it as dim yet readable as you comfortably can.

Shut off unneeded hardware and application: Turn off Bluetooth. If you are not using the internet, turn off the laptop's Wi-Fi receiver, as well. Don't use an external mouse or other device. And finally, mute the notebook's sound system; this not only saves power but also avoids annoying everyone else in the cafe.
There are tons of application in startup that are running for no use, these should be turned off to avoid extra power consumption

Avoid multimedia: Save hefty chores such as photo editing and watching videos for when your system has AC power. If you must listen to music, use your iPod (or a similar dedicated device).

Know when to sleep and when to hibernate: You need to think about when you want to save power by sending your laptop into Standby or Sleep mode, and when you want to hibernate it.

There is a difference. XP's Standby mode and Vista and Windows 7's Sleep mode keep your PC on, using some power, but less of it than in normal use. Hibernate saves the PC's state to the hard drive, and then shuts it off entirely so that the system uses no power.

Regrettably, Windows takes much longer -sometimes minutes- to enter and leave hibernation. And during those minutes, the battery is draining heavily and you can't work.

Windows XPs Standby mode isn't really all that efficient. If you know that your XP laptop will be inactive for more than about half an hour, hibernate it. Otherwise, use Standby.

Vista and Windows 7 do a much better job with their Sleep mode. Don't bother hibernating your notebook unless you think that you'll be going more than two or three hours without using it.