Power the radio – Sangean U3 (R1) User Manual
Page 8

7
GB
Power the radio
Note:
Insert back up battery prior to main batteries.
Back up battery is to back up the preset stations and also clock. 
It is necessary to insert back up battery (2 x UM-3 .5V, not sup-
plied) for memory back up even if you use AC power only. Without 
the back up battery, time and preset station will get lost if remove 
AC power cord from AC outlet or during AC power failure.
Back up battery compartment is located inside the main battery 
compartment. Insert 2 x AA size (UM-3) battery and ensure the bat-
tery is inserted in accordance with the diagram shown.
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