Open your task manager and you will find a lot of programs running that you do not need. These programs take up memory space and slow down your laptop. They also cause excessive use of power and you find yourself at zero percent charge in no time. So, close these apps before it does any harm.
Avoid working on multiple programs. While you might be tempted to work efficiently and multitask on your Excel sheets, Powerpoint and Adobe Photoshop, this can put a strain on your battery. Graphic intense applications drain batteries even faster. To increase lifespan, work simultaneously on one or two programs, max.
Disable unused devices and ports. External devices such as a mouse, Wi-Fi, external speakers and Bluetooth can drain your battery. When these are not in use, turn them off.