https://wccftech.com/airpods-max-firmware-3c39-does-fix-battery-drain-issues/

We were hoping that Apple would fix AirPods Max battery related issues with the new 3C39 firmware, and it appears as though the company has delivered on that end.

Apple released the 3C39 firmware update for AirPods Max just a few days back and it was being hoped that the software would fix all the battery life related issues in Apple’s new headphones. According to Guilherme Rambo on Twitter, the battery related issues have now been resolved.