Right earbud shuts down randomly between 40-70% battery.

Hi,

I have a problem with my right earbud shutting down randomly anywhere between 40-70% battery, I've checked this with monitoring the battery status.

When I put them back into charging case it starts from 0% and in just minutes it jumps up to 50%+ battery again..

They're just over 18months old abs I'm using them with a Huawei p30 Pro.

Any suggestion to troubleshoot would be really appreciated!

Feels like I've tried everything but same result always.

Best regards Emil