My suggestion is you to Use blevo to double-check.. see pic.Just a matter of interest and I do apologize in advance if you already tried it, but have you tried to delete the MC app and reinstall it? There might be a bug in the app ad it showing the incorect health.
I had this with mine, 2 charges old battery and only 40km covered on the bike it was showing 93% health on my battery. Deleted the app and reinstalled and now is showing the full 100% health on my battery.
Worth a try?