Sharp PC-AR10 Manual page 48

Or you can use the battery charge indicator located on the corner of the standard
battery. There are 5 indicator lamps, and if you press the button above lamps, they
will show you the charging status. If all 5 lamps are lit, the battery is fully charged. If
only an orange lamp is lit, it will discharge soon.
An optional secondary battery also has the battery charge indicator. If you press a
white circle, lamps will show you the charging status. The charging status is same as
that of the standard battery.
Battery Indicator Status
Orange Green
Orange Green
Orange Green
Orange Green
Orange Green
Orange Green
Orange Green
Capacity Remaining
All On
Four On
Three On
Two On
Orange only On
Orange Blinking
All Off
3 3
80%~100%
60%~79%
40%~59%
20%~39%
11%~19%
Under 10%
0%(Empty)
3-3