Toshiba Tecra A40-D1434 Users Guide for Portege R30-D and Tecra C40-D/A40-D - Page 86

Battery type Battery pack (45 Wh, 4 cell) RTC battery Power off Power on about 3.5 hours about 3.5 ~ 10 hours Does not charge Does not charge Charging Time (A40-D) The following table shows the approximate time required to charge an exhausted battery fully. Battery type Power off Power on Battery pack (45 Wh, 4 cell) about 3 hours about 3 ~ 10 hours RTC battery Does not charge Does not charge Be aware that the charging time when the computer is on is affected by ambient temperature, the temperature of the computer and how you are using the computer. If you make heavy use of external devices for example, the battery might scarcely charge at all during operation. Note that charging time will vary depending on the ambient temperature, the computer's internal temperature, and how the computer is being used. For example, whether the display is set to shut off automatically when idle, whether you make heavy use of external devices powered by the computer, or if the computer's internal storage drive is being accessed frequently by an application. Charging notice The battery might not begin charging immediately under the following conditions: The battery is extremely hot or cold (if the battery is extremely hot, it might not charge at all). To ensure the battery charges to its full capacity, charge it at room temperature of between 5°C to 35°C (41°F to 95°F). The battery is nearly completely discharged. In this instance, leave the AC adaptor connected for a few minutes and the battery should begin charging. The DC IN/Battery indicator might show a rapid decrease in battery operating time when you try to charge a battery under the following conditions: User's Manual 4-20