Hi Andy,
I see. Indeed, a battery indication issue was confusing. We’ve investigated it and worked on a solution for some time. However, with the new 29 Beta 3, we’ve released a new algorithm for the charge level calculation. So the issue shouldn’t be present anymore.
The battery replacement also touches on the question of the IP67 protection of the devices. It’s almost impossible to ensure that after the opening the device is still fully protected.