The standard packaging includes, AirPods (in the charging case), Quick start guide and a lightning cable.
Yes, many people does that to improve the battery life.While using only one AirPod at a time, your iPhone will switch over to a mono mixdown so, you can hear both sides of any stereo.
No. Airpods do not have storage space for media.
If you do not want to use your AirPods with your iPhone, you can disconnect them easily. Follow below steps to disconnect AirPods with the iPhone.
Step 1: Go to Settings
Step 2: Tap "Bluetooth"
Step 3: Tap "information button" besides your AirPods
Step 4: Tap "Forget this device"
Look past their offbeat design and you'll find that Apple AirPods' compact size and high convenience factor are a winning combination.