Use Power Options in Control Panel which is supply management of your operating system. Using this option your can give time for turning off your screen and stand by regime’s options. So your laptop will keep its power when you are not actively using it. In addition to this, use economy regime of energy use, which option is in the control panel. And please avoid playing 3D games when you are on battery as they will “eat” your battery’s power in short time.
Reduce the brightness of the screen using the Display settings in the Control panel. Put the brightness at the lowest level that you can work at. The power used for brightening the screen is equal to the power used for games. And this is the fastest way to leave your laptop without any battery.

Turn off Wi-Fi, Bluetooth and Infrared if you are not using them. Every attempt to connect to Wi-Fi or Bluetooth of Infrared uses up your laptop’s energy. The same is the situation with USB devices. Use them as a last resort.

Get loose of listening to music or use CDs. They take big amount of powers as well.

And the last is to change your anti virus software’s options so that the software to not start full virus check with starting the laptop. This full check engages the processor and hard disk for thirty minutes to an hour.

And finally for keeping your battery in good condition do not forget to uncharge the battery fully, before recharging it again. And do not always use your laptop on battery. Time to time use it without battery and connected to electricity. Because batteries have explicit life and explicit number of recharges possible.

If you follow these advices you will have long lasting battery of your laptop for really long time. And as you know one battery is nearly one third of the price of your laptop and there is no need to give that amount of money just because of negligent use of your laptop. Take good care of it and it will repay with long service.