Sony PS3 CECH-2106A Instruction Manual page 51

Storage
When the wireless controller is not used for an extended period of time, it is
recommended that you fully charge it at least once a year in order to maintain
battery functionality.
When disposing of the wireless controller
The lithium-ion battery of the wireless controller is recyclable. When
disposing of the wireless controller, remove the battery and follow local
regulations regarding disposing of batteries.
Removing the battery
Caution
 Remove the battery in a location out of the reach of small children to help
prevent accidental swallowing of small parts such as the screws.
 Be careful not to hurt your nails or fingers when removing the controller
casing.
 For safety reasons, attach tape or a seal on the metal part of the battery
before disposing.
 Do not handle damaged or leaking Lithium-Ion batteries.
Notice
Other than when disposing of the wireless controller, never remove the screws
and never remove the battery from the wireless controller.
1
Disconnect the USB cable from the wireless controller.
2
Using a crosshead screwdriver, remove the screws (5 places).
3
Remove the casing.
 Push in the direction of the arrow.
 Pull the casing apart.
4
After disconnecting the connector, remove the battery.
Connector
Battery
EN
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