Home › Part 107 Practice Tests › Loading, Performance & Airport Operations Questions › Question 37
What happens to a lithium battery's usable capacity in cold weather?
- A.It increases because cold cells hold charge longer
- B.It decreases, reducing available flight time
- C.It is unaffected; only the airframe is affected by cold
Correct answer
B. It decreases, reducing available flight time
Why
Cold slows the chemical reactions inside lithium cells, reducing usable capacity and voltage under load. Flight times in winter can be notably shorter than the same battery delivers in mild weather.
Source: FAA-G-8082-22 Ch. 8 · ACS knowledge area: Determining the Performance of an sUAS · From the Loading, Performance & Airport Operations practice bank (PER-037).