Toshiba PSM30C-7101U User Manual - Page 120

POWER User's Manual 2. With repeated discharges and recharges, the battery's capacity will gradually decrease. Therefore, an often used, older battery will not operate for as long as a new battery even when both are fully charged. In this case, Power Save Modes window in TOSHIBA Power Saver will indicate a 100% charge for both the old and new battery, but the displayed estimated time remaining will be shorter for the older battery. Maximizing battery operating time A battery's usefulness depends on how long it can supply power on a single charge. How long the charge lasts in a battery depends on: y How you configure the computer (for example, whether you enable battery- power saving options). The computer provides a battery save mode, which can be set in TOSHIBA Power Saver, to conserve battery power. This mode has the following options: • Processor speed • Monitor brightness • System standby • System hibernate • Turn off monitor • Turn off hard disks y How often and how long you use the hard disk, CD/DVD-ROM and the diskette drive. y How much charge the battery contained to begin with. y How you use optional devices, such as a PC card, to which the battery supplies power. y Enabling Standby mode conserves battery power if you are frequently turning the computer off and on. y Where you store your programs and data. y Closing the display when you are not using the keyboard saves power. y Operating time decreases at low temperatures. y The condition of the battery terminals. Make sure the battery terminals stay clean by wiping them with a clean dry cloth before installing the battery pack. 6-10