# User Guide

# Personal Computer VAIO Fit 14E/15ESVF1421/SVF1521

## Battery

- What should I do if a message appears indicating that the battery pack is incompatible or has been incorrectly installed, after which my VAIO computer enters Hibernate mode?
- Why cannot I fully charge my battery pack?
- Why is my VAIO computer running slowly and the CPU clock frequency low while the computer is running on battery power?

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### You might be looking for the following topics:

- Charging the Battery Pack
- Notes on Using the Battery Pack
- Installing the Battery Pack
- Removing the Battery Pack
- Charge Indicator Status List
- Extending the Battery Life
- About Sleep Mode
- Changing the Rapid Wake (Sleep Mode) Settings
- Checking the Battery Charge Capacity

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