I have Philips MiniRite rechargeable and purchased their optional portable charger. It works a lot like the charger for Apple Air Pods. It contains a battery that can charge the for three days while it in turn is charged by any 5V USB-C supply and can charge with the HA in them or while the HA is in your ear. I have had the HA for a year and a half and have never had them run out of power even after wearing them all day. In fact, when I checked, they had 30% charge left after wearing them for 18 hours, which was after a transatlantic flight. I suspect one charge would last a lot longer than you can stay awake.
You’re ignoring this member’s posts.