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Help Guide
Digital Music Player
NW-A55/A55HN/A55L/A56/A56HN/A57
Notes on charging the battery
The charging time depends on the battery usage conditions.
When the battery is sufficiently charged but the battery life has dropped to about half of its normal span, the battery
may be worn out. Contact the nearest Sony dealer or Sony Service Center.
The computer may not recognize the player in the following situations.
When you connect the player to the computer for the first time
When the player has not been used for a long period of time
Charge the player for about 10 minutes. The player may start operating normally.
When the ambient temperature exceeds the recommended range,
forcibly terminated. Charge the battery at an ambient temperature from 5 °C to 35 °C (41 ºF to 95 ºF).
The battery can be recharged about 500 times from a completely depleted state. The exact number of times may
vary depending on the usage conditions.
To prevent deterioration of the battery, charge the battery at least once every 6 months.
Charging is not guaranteed when you use a homebuilt or modified computer.
Charging from a USB hub is only guaranteed when you use a self-powered USB hub that carries an authorized logo.
When you connect the player to a computer for a long period of time, connect the computer to an AC power supply.
Otherwise, the computer's battery may run out.
While the player is connected to a computer, observe the following cautions. Otherwise, the player may not function
properly.
Do not turn on the computer.
Do not restart the computer.
Do not wake the computer from sleep mode.
Do not shut down the computer.
The player may become hot while charging. This is not a malfunction.
The battery indicator does not correspond exactly to the remaining battery level. Refer to the battery indicator as a
guide.
When you charge the player using a computer, do not remove the USB cable while data is transferring. If you
disconnect the USB cable, data on the player may be lost.
The contents of the Help Guide may be subject to change without notice due to updates to the product's specifications.
Related Topic
Charging the battery
Reducing the battery consumption
Notes on the built-in battery
Battery life
4-740-523-13(1) Copyright 2018 Sony Corporation
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appears on the screen and then charging is
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