Microtek MKT-1300a - Manual (Page 19)

Battery Status
Check the battery status
periodically to ensure that you have
a usable battery charge. When the
LCD screen is on, it displays the
status of the battery charge to help
you gauge battery life and prevent
interruption during shooting and use
of the camera.
The battery charge display consists
of a battery icon showing different
levels of charging. When the
battery icon appears to be empty,
this indicates that the batteries need
to be replaced or charged.
Full Battery is fully charged
Half Battery approaches half-life
(blinking) Low Battery low; replace or recharge soon
NOTE:
External conditions or the type of battery used may affect the reliability of
the battery status display.