Casio DT-X8 - Manual (Page 68)

E-66
Charging the Battery Pack
The battery pack installed in the DT-X8 can be charged using the USB and Charging
Unit with the optional AC adaptor (AD-S15050B). An indicator on the DT-X8 shows
the level of charge.
AC Adaptor (AD-S15050B)
Status of Indicator 1 on DT-X8:
Orange: Charging
Red Flashing: Standby due to battery pack error or the surrounding temperature is out
of the charging temperature range
(charging begins when the temperature is within the charging temperature
range)
Green: Charging complete