User Manual（FCC Version Draft）
This manual is applicable to the following product:
P53U,BF-1903,P53UH,P53UL,P53X，P54U,BF-1904,P54UM,P54G,P54X
f. Do not charge the battery or the radio if it is damp. Dry it before charging to avoid damage.
WARNING
！
When keys, ornamental chain or other electric metals contact the battery terminal, the battery may become damage or
injure a human. If the battery terminals are short circuited it will generate a lot of heat. Take care when carrying and
using the battery. Remember to put the battery or radio into an insulated container. Do not put it into a metal
container.
How to Charge
a. Plug the AC adaptor into the AC outlet, and then plug the cable of the AC adaptor into the DC jack located on the back
of the charger. The indicator light blinks orange and is then ready to charge a battery.
b. Plug the battery or the radio into the charger. Make sure the battery terminals are good in contact with charging
terminals. The indicator light turns to red--- charging begins.
c. It takes approximately 2-5 hours to fully charge the battery. When the lamp lights green, the charging is completed.
Remove the battery or the radio unit with its battery from socket.
When charging a radio (with battery) the indicating lamp will not turn into green to show the fully charged status if the
radio is powered on. Only when the radio is switched off will the lamp indicate normal operation. The radio consumes
energy when it is power-on, and the charger cannot detect the correct battery voltage when the battery has been fully
charged. So the charger will charge the battery in constant voltage mode and fail to indicate correctly when the battery
has been fully charged.
LED Indicator
STATUS
LED
No Battery
Green and red alternately flashing
Charge Normally
Red
Fully Charged
Green
Trouble
Red blinks fast for a long time
NOTE
：
Trouble means battery too warm, battery short-circuited or charger short-circuited.
Installation of accessories
Before the radio is ready for use we need to attach the antenna and battery pack, as well as charge the battery.
Installing the belt clip
a. At the back of the radio there are two parallel screws mounted above the battery, remove these and thread them
through the holes on the belt clip as you screw them back into the radio body.
b. Removing the Belt Clip: Unscrew counter-clockwise to remove the belt clip.
