User manual TOSHIBA C70D-A-111

[. . . ] User's Manual C70/C70t/C70D/C75/C75t/ C75D/L70/L70t/L70D/L70Dt/ S70/S70t/S70D/S70Dt Table of Contents Chapter 1 TOSHIBA Legal, Regulatory and Safety Copyright, Disclaimer and Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Video Standard Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 OpenSSL Toolkit License Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] To ensure the battery charges to its full capacity, you should 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 you should leave the AC adaptor connected for a few minutes and the battery should begin charging. The DC IN/Battery indicator may show a rapid decrease in battery operating time when you try to charge a battery under the following conditions: The battery has not been used for a long time. The battery has completely discharged and been left in the computer for a long time. In such cases you should follow the steps as detailed below: 1. Fully discharge the battery by leaving it in the computer with the power on until the system automatically turns itself off. Connect the AC adaptor to the DC IN 19V jack of the computer, and to a wall outlet that is supplying power. Charge the battery until the DC IN/Battery indicator glows white. Repeat these steps two or three times until the battery recovers normal capacity. Monitoring battery capacity Remaining battery power can be monitored using the following methods. User's Manual 4-23 Clicking the battery icon on the Taskbar Via the Battery Status in the Windows Mobility Center window You should wait at least 16 seconds after turning on the computer before trying to monitor the remaining operating time. This is because the computer needs this time to check the battery's remaining capacity and then calculate the remaining operating time, based on this together with the current power consumption. Please be aware that the actual remaining operating time may differ slightly from the calculated time. With repeated discharges and recharges, the battery's capacity will gradually decrease. In view of this it will be noted that an often used, older battery will not operate for as long as a new battery even when both are fully charged. Maximizing battery operating time A battery's usefulness depends on how long it can supply power on a single charge, while how long the charge lasts in a battery depends on: Processor speed Screen brightness System Sleep Mode System Hibernation Mode Display power off period Hard Disk Drive power off period How often and for how long you use the Hard Disk Drive and external disk drives, for example, optical disc. How much charge the battery contained to begin with. How you use optional devices, such as a USB device, to which the battery supplies power. Whether you enable Sleep Mode, which can conserve battery power if you are frequently turning the computer off and on. Whether you close the display panel when you are not using the keyboard - closing the display saves power. The environmental temperature - operating time decreases at low temperatures. The condition of the battery terminals - you should always ensure the terminals stay clean by wiping them with a clean dry cloth before installing the battery pack. Whether you enable Sleep and Charge function. Batteries exhausted time When you turn off the power of your computer with batteries fully charged, the batteries will be exhausted within the following approximate period. User's Manual 4-24 Battery type Battery pack (24Wh, 3 cell) Battery pack (48Wh, 6 cell) Battery pack (66Wh, 6 cell high capacity) Sleep Mode About 2 days About 4 days About 5. 5 days Shut Down Mode About 22 days About 43 days About 60 days Extending battery life To maximize the life of your battery packs: At least once a month, disconnect the computer from a power source and operate it on battery power until the battery pack fully discharges. Before doing so, follow the steps as detailed below. Disconnect the AC adaptor and turn on the computer's power - if it does not turn on then go to Step 4. [. . . ] The amount of main system memory allocated to support graphics may vary depending on the graphics system, applications utilized, system memory size and other factors. If your computer is configured with more than 3 GB memory, the memory might be displayed as approximately 3 GB only (depending on the computer’s hardware specifications). This is correct because the operating system usually displays the available memory instead of the physical memory (RAM) built into the computer. Various system components (like the video adapter’s GPU and PCI devices like Wireless LAN, etc. ) require their own memory space. [. . . ]