User's Manual
Professional
FM Transceiver
6
BATTERY INFORMATION
Normal Charging Tips
Self- Examination:1.   When charging, orange light twinkles for 1 second and  goes out, which 
means the charger has passed  its self-examination and it can charge  the battery normally. If 
the light remains orange or  the red light twinkles, it means  the charger can not pass its  self-
examination or charge the battery.
Trickle Pre-Charging:2.   If red light twinkles when battery is inserted into the charger, it means the 
remnant voltage is low and the charger is trickle-charging the battery (Pre-Charging Status). The 
charger  will automatically turn into normal charging when the battery reaches a certain electric 
quantity, and if the red light stops twinkling, it means the remnant voltage meets a certain electric 
quantity, and the charger will charge the battery normally.
NOTE: Trickle charging (Pre-Charging Status) time can not  beyond 30 minutes. If the indicating 
lamp still twinkles after 30-minute  trickle-charging, it means that the charger can not  charge the 
battery. Please check whether the battery or charger is damaged.
How to Store the Battery
If the battery needs to be stored, keep it in status of 80% discharged or higher.1. 
It should be kept in low temperature and dry environment.2. 
Keep it away from hot places and direct sunlight. 3. 










