If you buy this product I would highly recommend taking it out of the box, use an Apple lightning cable, plug it into an Apple charging block or magnetic charging pad or Apple laptop lightning port to charge it over night (leave AirPods out of the case and charge it at least 12 hours) and do this BEFORE attempting a Bluetooth connection or …
Link: https://www.amazon.com/Apple-Wireless-Charging-Case-AirPods/dp/B07PYLKTD8