Figure 5-23. Battery Life Indicator Chart

TM 11-5820-890-10-8

Remember also that in the absolute worst case where you lose main

WORST CASE

power and your HUB is dead, all you have to do is perform an ICOM fill,

including sync time, using your ANCD

The RT computes the

condition by

battery

measuring the time spent in

the receive and transmit

modes. Operating the RT in

receive m o d e f o r 2 1 0

minutes

increases

the

battery condition value by

one. Transmitting for 24

minutes also increases the

value by one. The battery

should be replaced when

the value is 11. The Battery

Life Indicator uses 12 to

indicate

the

power

exhaustion point, not hours.

For estimated hours of

battery life for different

uses, see Chapter 8. This

clock shows that for normal

(9:1 duty cycle) operations,

a reading of 3 means you

have used about 1/4 of your

battery, a reading of 6

means half the power has

been used up, 9 indicates it

is 3/4 gone, and 12

represents

exhaustion.

These are rough estimates

only, and they apply to

operators, not NCS or other

heavy radio users. A 6 could

mean power exhaustion for

a manpack NCS operator.

Figure 5-23. Battery Life Indicator Chart

5-66