The battery capacity of Apple AirPods Pro 2 headphones has increased by 15%, while the capacity of the charging box has hardly increased.

CTOnews.com, Oct. 3-Apple's AirPods Pro 2 has one and a half hours more listening time than its predecessor, and regulatory filings show that the improvement is partly due to an increase in the battery in the headphone body.

According to 3C certification information, Apple AirPods Pro 2 headphone body is equipped with 49.7mAh batteries, models A2731 and A2729. The first generation of AirPods Pro's battery capacity is 43.24mAh, so the second generation has increased by about 15%.

In addition, Apple's AirPods Pro 2 headphone box is equipped with an 523mAh battery, the A2798, which only increases the battery capacity of the previous generation of headphone boxes by 4mAh.

CTOnews.com has learned that Apple claims that AirPods Pro 2 can listen for up to six hours in active noise reduction mode. The wireless charging box can charge the headset an additional 4 times, which means that users can enjoy up to 30 hours of listening time in active noise reduction mode, a full 6 hours more than the previous generation.

In addition, Apple AirPods Pro 2 is equipped with an H2 chip, which claims to use computational audio algorithms to bring smarter noise reduction performance, excellent three-dimensional sound effects and more efficient battery life.