AnyTone AT-289 Instruction Manual page 14

BATTERY INFORMATION
5. Charging Process
Charging Status
Standby (Self-examine lights orange 1second when power on)
6.
Self-Examine
STATUS No Battery
When Power on
Orange
None
(for 1 second)
Status
None
n
Charge
Pre-charging
Normally Charged
Twinkles Green
for 5 Minutes
Trouble
for a long time
Professional
5
FM Transceiver