Samsung NP305U1A User Manual Xp/windows7 Ver.1.3 (English) - Page 91

Battery Chapter 3. Settings and Upgrade 90 Measuring the Remaining Battery Charge You can view the battery charge status by completing the following procedures. Confirming the battery charge in the Taskbar Disconnect the AC adapter and move the mouse cursor over the battery icon in the system tray of the Taskbar to confirm the remaining battery charge. Extending the Battery Usage Time Decreasing the LCD Brightness Press the + keys on the keyboard to decrease the LCD brightness to extend the battery usage time. Using the power management program This program helps you use the battery more efficiently and supports the power mode optimized for the operating environment. Battery Usage Time Information A battery is an expendable supply, so when using it over a long time, the capacity/battery life is shortened. If the battery life is reduced to under half of its initial time, we recommend purchasing a new battery. When not using the battery for a long time, store the battery after charging it to 30-40% of its capacity. This extends the battery life time.