Answer: Yes, the default package of the M2 Pro and M1 Pro includes a strap and battery pack, this product can be used as a spare battery pack.
Answer: Yes, the battery is a power bank.
Answer: Press the button twice and it will turn the pack off.
Answer: Yes ! You will be glad you ordered a spare when you learn how smart of a battery it is and how it was designed with the over all health of your quest unit in mind.
Answer: This is only for the pro strap. It has magnets that attach it to the strap. The M2 doesn’t have the magnets that power the battery.
Answer: Sorry, this is prohibited behavior. When the B2 battery pack is low, please disconnect the B2 battery pack from the Quest2, and then use an external charger to charge the B2 battery pack independently.