To Charge The Second Battery Pack - Sony PCG-FX370K Primary User Manual

Change text in this variable definition to document title.
Using weight saver for second battery cover

To charge the second battery pack

Keep the battery pack in the notebook while it is connected to AC power.
The battery indicator flashes while the battery is charging.
See also "To charge the battery pack" in your printed Quick Start for more
information.
Charging the second battery
To determine the amount of time the battery lasts, see "Displaying Battery
Information".
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Battery pack
Weight saver
Battery indicators