Toshiba Portege R400-S4931 User's Guide for Portege R400 - Page 106

106 Mobile Computing Changing the main battery Changing the main battery When your main battery has run out of power, you have two options: plug in the AC adaptor or install a charged main battery. Never short circuit the battery pack by either accidentally or intentionally bringing the battery terminals in contact with another conductive object. This could cause serious injury or fire, and could also damage the battery pack and computer. ❖ Never expose a battery pack to abnormal shock, vibration or pressure. The battery pack's internal protective device could fail, causing it to overheat or ignite, resulting in caustic liquid leakage, or explosion or fire, possibly resulting in death or serious injury. TECHNICAL NOTE: To avoid losing any data, save your files and then either completely shut down your computer or put it into Hibernation mode before changing the main battery. Removing the battery from the computer To remove the battery: 1 Save your work. 2 Turn off the computer or place it in Hibernation mode according to the instructions in "Using and configuring Hibernation mode" on page 74. 3 Unplug and remove any cables connected to the computer, including the AC adaptor. 4 Close the display panel and turn the computer upside down. Before you turn the computer over, make sure that the computer display is properly closed and is not in tablet mode. Setting the computer down on the display may cause damage to the screen.