Aircraft Batteries

Question 1

Battery performance depends on 4 characteristics?

Answer 1

1. battery’s age
2. state of health
3. state of charge
4. mechanical integrity

Question 2

Determining Battery Age/Life

Answer 2

1. record the install date of the battery on the
   battery
   ** during normal battery maintenance - battery
   age must be documented in the maintenance
   log or int he shop maintenance log**

Question 3

Determine a battery’s state of health

Answer 3

May be determined by:
1. duration of service interval (vented batteries)
2. environmental factors (excessive heat or cold)
3. observed electrolyte leakage (evidenced by
corrosion of wiring and connectors)

Question 4

Describe how to determine a battery’s state of charge

Answer 4

Determined by the cumulative effect of charging and discharging the battery

Note: the aircraft generator or alternator restores a battery to full charge during a flight of 1 hour 90 minutes