Battery Case - how does it work?
Does the Battery Case's lightning port work with headphones?
The lightning port on the iPhone X Battery Photo Case can only be used for charging. The lightening port on the iPhone 7/8/7+/8+ case can be used for charging and syncing your iPhone with your computer. Neither case is compatible with headphones that plug into the lightning port. Audio input and output through the lightning port is not supported, which isn't our choice.
Unfortunately, Apple has one universal limitation for all third-party battery cases... audio cannot pass through the connector. This means all third-party battery cases are limited to the use of wireless headphones.
We would have loved to support this.