After installing XXR you'll get wrong battery % reading in your OW app, it will get to 0% when there's a lot of juice left. You have two options to solve this problem:
1. Start looking at "usage" in the app. Check what it shows when you drain the battery from full to empty and remember, that that's your limit.
2. Go to our other product: https://onewheelrider.eu/en_US/p/XXR-BMS-FLASHED/119
For extra 100 EUR you'll get your BMS (small PCB in the battery box, Battery Management System) flashed with custom firmware, which will read new, extended capacity right.
Waiting time is 1 week.