RADAR TEST SET
OPERATION UNDER UNUSUAL CONDITIONS - Continued
Figure 9-1. Test Set Commercial C-size Battery Installation
BATTERY OPERATION BELOW 0 DEGREES C
Battery endurance and lifetime is degraded at cold temperatures. For best performance, store spare batteries
in a room temperature location and expose to cold temperatures only when necessary.
Never attempt to recharge a cold battery. Always allow the battery to warm to room temperature before
The temperature sensing circuits of the charger at room temperature will not correctly
sense the temperature of a cold battery that has just been inserted.
The Test Set internal battery charger is disabled when the Test Set is below approximately 0 C or above
approximately 40C. Therefore, supplying external DC to a cold Test Set with a battery installed is
acceptable. The internal charger will automatically start operation when the Test Set has warmed to
END OF WORK PACKAGE