Charging The Battery Pack; Optional Functions - Retevis RT665 Manual Del Usuario

Charging the Battery Pack

1. The battery is not charged in the factory,please charge the battery
under the environmental temperature 5 - 40℃ before using.
2. After purchasing or long-term storage(more than two months),
charging the battery for the first time can not reach its saturation
capacity, repeat charge/discharge for twice or three times to make
battery capacity achieve the best state.
3. Before charging, please power off the transceiver,using the
transceiver during charging may affect correct charging.
4. If the battery has been charged fully,please do not charge it again,
otherwise the service life of the battery may be shorten or may be
damaged.
5. If the service time is significantly reduced even after completely
correct charging, the battery can not be used any more, please
replace a new battery.

Optional Functions

● Scanning
It is convenient for the user to search for calls from other channels.
When【Channel-】is programmed to the scanning function, long
press【Channel-】key for two seconds to enter into the scanning
mode; operate it again or switch the channel to exit.
● Keyboard Lockout
Press both【Channel+】【Channel-】keys to lock all buttons,
operate them again to unlock.
● Monitoring
This operation is used when you wish to adjust the volume level or
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