There are many posts related to laptop’s battery life on the net if you google “Laptop battery’s life” and then a recent news article on my feed provided the news of the computerworld on the same topic again. Well obviously i thought as these might be different but most of them was on my mind and a 4 page long article influenced me to summarize the points so that it will help somebody in hurry as is the case with the internet users like me.
For a longer life of battery.
1. Don’t Run It Down to Empty
2. Keep It Cool(Heat breaks down the battery, and reduces its overall life).
3. Never work with the laptop on pillows or cushions.
4. Give It a Rest, If you’re going to be working exclusively on AC power for a week or more, remove the battery first. (This will not apply on Nepal due to excessive load-shedding).
5. An unused battery loses power over time, and you don’t want all the power to drain away, so remove it when it’s at least half-charged.
6. Only remove or reinsert the battery when the laptop is completely off or hibernating.Not following this will crash your system and possibly damage your hardware.
7. Don’t even think to refrigerate your battery to keep it cool 
. Instead, store it in a dry place at room temperature.
Longer Life Between Charges
1. Dim your screen. Keep it as dim as you can comfortably read it.
2. Shut off unneeded hardware, Turn off your Blue-tooth, and if you’re not using the Internet, turn off your Wi-Fi receiver, as well. Don’t use an external mouse or other device, CD/DVD’s (instead copy it on hard-disk-Video playback from a hard drive, is less taxing). And muting the PC’s sound system not only saves power.
3. Avoid multitasking.Run as few programs as you can get away with. If possible, stick to the one application (word processor, browser, or whatever) you’re currently using, plus your anti-virus and firewall in the background.
Software Developers might not be comfortable without multitasking.
4. Avoid multimedia Save chores like photo editing and watching old Daily Show videos for when you have AC power. And if you must listen to music, use your iPod (or similar device).
5. Adding RAM saves battery life if you are sure to have multitask.
More RAM means less hard drive access, and the hard drive uses a lot of electricity. But RAM uses electricity as well, and unless you’re doing a lot of multitasking (not a good idea when you’re on battery power), more RAM won’t reduce hard drive use.