Sony Atrac3/MP3 CD Walkman D-NE20 - Manual (Page 13)

Note on the useful life of the rechargeable
battery and when to replace it
If the battery is new or has not been used for a
long time, it may not charge completely.
In that case, charge it until the OPR lamp
goes off and then use the player until
the battery is completely depleted (“Lo
Batt” appears on the display). Repeat this
procedure several times.
When the battery life is still shorter by about
half of a normal charge after trying this
procedure, replace the battery with a new
rechargeable battery.
Note on carrying the rechargeable battery
Use the supplied battery carrying case to
protect against unexpected heat. If the
rechargeable battery comes into contact with
the metallic objects, heat or fire may occur
due to a short circuit.
When using a dry battery
You can extend the power available by using
a dry battery, together with a rechargeable
battery by attaching the external battery case.
The battery in the player and that in
the external battery case are discharged
simultaneously.
When using the rechargeable battery and dry
battery together to extend power, use a fully
charged rechargeable battery and new dry
battery.
1
Remove the case cover.
2
Insert an LR6 (size AA) alkaline
battery (not supplied) by matching
the
 to the diagram inside the
battery case and close the battery
case lid.
Continued 
13
Getting Started
D-NE20/NE20LS.GB.2-318-320-15(1)