MSI CX420 User Manual page 38

2-16
Battery:
Glowing green when the battery is being charged.
Glowing amber when the battery is in low battery status.
Blinking amber if the battery fails and it is recommended to replace a
new battery. Consult the local dealer for purchasing an equivalent
type of battery recommended by the manufacturer.
Battery LED goes out when it is fully charged or when the AC/DC
adapter is disconnected.