Casio DT-X100 Series Software Manual page 41

The status of both battery pack and memory backup battery can be monitored with
Microsoft's GetSystemStatusEx2() API function in your application to retrieve the status
values described in the table.
Member
ACLineStatus
BatteryFlag
BatteryLifePercent
BackupBatteryFlag
BatteryChemistry
Description
Retrieves the status
of AC power.
Retrieves the status
of battery pack.
Retrieves the
remaining capacity of
battery pack every
10% level.
Retrieves the status
of memory backup
battery.
Retrieves the type of
the operating battery,
either battery pack or
dry-cell battery.
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Returned Value
AC_LINE_OFFLINE : AC power is off.
AC_LINE_ONLINE : AC power is on.
BATTERY_FLAG_HIGH : OK
BATTERY_FLAG_LOW : Low
BATTERY_FLAG_CRITICAL : Almost
exhausted.
BATTERY_FLAG_CHARGING
Under charging
In the range of 10 to 100%
BATTERY_FLAG_HIGH : OK
BATTERY_FLAG_LOW
exhausted
BATTERY_CHEMISTRY_LION
Battery pack
BATTERY_CHEMISTRY_ALKALINE :
Dry-cell battery
:
: Almost
: