1. Reduce display brightness,
2. Turn off Wi-Fi and Bluetooth,
3. Eject CDs, DVDs,
4. Disconnect external hard drives
5. For old laptops having less RAM, use lightweight apps.
1. While Gaming, CPU and GPU, hard drive and optical drive are used extensively due to which a battery can grain within 1 to 2 hrs .
2. Ensure that power supply is plugged in while gaming.
The Power Options in Control Panel lets you specify when to
1. Dim and turn off display,
2. Activate sleep and hibernate functions.