Toshiba Satellite 3000-S304 User Guide - Page 96
Charging batteries, Charging the main and secondary batteries
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96 Mobile Computing Charging batteries Charging batteries NOTE: Battery charge time may vary depending on the applications, power management settings, and features used. The main battery and the optional secondary battery need to be charged before you can use them to power the computer. Charging the main and secondary batteries To charge the main battery, plug the computer into a live wall outlet. It takes several hours to charge the battery with the computer off. It takes much longer to charge the battery while the computer is on. Once the main battery is charged, the secondary battery, if inserted into the Modular Bay, will charge. TECHNICAL NOTE: The battery does not charge while the computer is consuming full power. To charge the secondary battery, fit it in the Modular Bay and connect the computer to an AC power source. TECHNICAL NOTE: When batteries are being charged, the main battery is charged first. After the main battery is fully charged, the secondary battery in the Modular Bay is charged. When the batteries discharge, the secondary battery in the Modular Bay will discharge first, then the main battery. A battery may not start charging immediately if: ❖ The battery is extremely hot or cold.