Siemens SX56 - Manual (Page 23)

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To insert or remove a memory card:
1. Push the memory card into slot (see above) until it clicks into
place. The card is secure only when it does not protrude from
the bottom of the device.
2. To remove the card push it in and then release. The card will
spring out.
Note: When you receive your device there will be a piece of
plastic in the slot; remove as described in step 2 above.
2.4.3 External Battery
You can purchase an optional external battery that attaches securely to the rear of your device. This external battery effectively
doubles the usage time of your device when fully charged.
The external battery can be charged while attached to your device, by using the cradle or by using the cradle-less charger adapter.
A full charging cycle, from empty to full, of the external battery and device combination, will require less than 5 hours.
To attach the External Battery:
1. Remove the rubber cover protecting the device connector
for the external battery - The cap is situated just below the
right screw on the back of the device.
2. Hook the external battery into the embedded slot near the
base of the back of your device (see picture to the left).
3. Tighten the screws situated in the top of the external battery
into your device.
External Battery Screws