The battery pack is designed and manufactured by 3D printing, with a new built-in battery cell of 3000mAh, a type-c interface, a maximum input current of 5V2A, and a charging red light that turns green when fully charged. The battery will flash if it is faulty or not installed. It supports charging while listening, and also supports charging in the device.

The outer shell is newly made, and the battery is only 7mm thick. It has been fully verified in multiple versions and can be used normally. In the future, if the battery cell is aged, it can be completely removed and replaced by yourself.