Sonos CR200 Manual page 21

Sonos Controller 200
If the battery charge begins to run low, a message will appear on your Controller
screen indicating that it's time to recharge. Simply place it in the cradle to recharge.
If you should miss this message and the Controller's battery discharges completely,
simply place the Controller into the charging cradle. The Controller's light sensor
will turn orange, indicating that a reset is in process. It will take a few minutes for the
Controller screen to wake up.
Battery Replacement
After several years (depending upon usage), the battery on your Controller may not
hold a charge as long as it once did. You can purchase a replacement battery (visit our
Web site at www.sonos.com for more information), and then follow the instructions
below to replace the battery.
Remove the battery door on the back of your Controller 200.
1.
Slide the battery door
back, and then lift it off
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