What does "talk time" mean?

The length of time a person can speak on a mobile phone before having to recharge the battery.

What is a synonym for "talk time"?

Common synonyms include: utterance length.

noun

noun ·Rare ·Advanced level

Noun

1
The length of time a person can speak on a mobile phone before having to recharge the battery. countable, uncountable
2
A prepaid amount of time on the bill agreement of a mobile phone. countable, uncountable