Transmitter Battery

Measure the voltage between battery (+) terminal and (-) terminal.

NOTE:

Battery discharge occurs during measurement Complete the measurement within 5 seconds.
During battery voltage measurement, voltage falls more than 1.8 volts in 3 seconds period.

Fig 1: Measuring Voltage Between Battery (+) Terminal & (-) Terminal
Courtesy of SUBARU OF AMERICA, INC.

If NG, replace the battery. (Use CR1620 or equivalent.)