Manpack and dismount radios. These are battery-powered radios. A "Battery Life
Indicator" gives you an estimate of remaining life, and a clock-type chart makes
It easy for you to determine at any time how much of the normal 20 hours of battery
life has been used. For combat and critical missions, when having to stop to change
the battery could be a serious problem, you should replace the battery when the
indicator reads "11" or higher. This means you are throwing out a battery with some
remaining life, but that is expected in critical situations. For training, it is necessary
to conserve resources, and the battery should be used until it is drained of power.
It is particularly important that you record the battery life when placing your radio
into operation. In a training situation, "The Battery Life Indicator" helps you predict
when your battery will be drained and a replacement required.
a. Chock battery life condition: Sot FCTN to SQ ON: then press BATT.
b. Write down battery life condition shown on display. Under normal circum-
stances, the battery may be used for up to 20 operating hours (remember:
RT duty cycle is 9:1). To determine remaining hours of battery life, refer to
the table on page 2-31). For combat and critical missions, replace the battery
as soon as possible if the display shows "11" or higher. Display will show "00"
when any battery is installed or RT FCTN is set to
If you change or remove battery, perform steps b(1) and b(2). If you wish to set
the battery life condition, go on to step c.
Set FCTN to
then remove battery. Log battery life condition
displayed in step in step b on battery if it is to be kept for future use.
Replace battery. Perform battery and battery box procedure: then go
on to step c to set battery life condition.
c. Log the number displayed in step b on the battery tag or decal.
d. Press CLR (display shows two lines).
Press number buttons (enter number on tag or decal). This must be a two-
number entry (00 - 10). Display shows the number you entered.
Press STO (display blinks and shows the number stored).
g. Sat FCTN to SQ ON.