AirPods First Gen battery drains quickly on phone calls?

Hey AmarMarak,

We'd recommend reviewing this article as it provides information on AirPod battery life that could help with this issue: Charge your AirPods and learn about battery life - Apple Support

"What you can expect with AirPods Pro (1st generation)

1. With multiple charges in your case, you get more than 24 hours of listening time, or more than 18 hours of talk time
2. Your AirPods Pro can get up to 4.5 hours of listening time or up to 3.5 hours of talk time on a single charge.
3. If you charge your AirPods Pro for 5 minutes in their case, you get around 1 hour of listening time or around 1 hour of talk time."

If that's not working as expected, we'd recommend contacting Apple Support for further assistance here: Get Support

Thanks!