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Battery Levels
If the battery level becomes low in the course of normal use, a status icon appears on
the device screen indicating low or very low battery status. In both cases, perform an
Active-Sync operation to back up your data, and then recharge your device as soon as
possible.
If the battery level reaches a low status, the device will enter sleep mode and cannot be
powered up until the battery is charged.
CAUTION: There is a high risk of data loss from RAM if the backup battery is
not fully charged. This can happen if the main battery has been drained and the
unit is not connected to the AC adaptor. For this reason, it is crucial that the
backup battery is switched on before charging the main battery for the first time.