All your bike batteries and tire pressures at a glance Displays battery levels for Di2, SRAM AXS, power meters, Varia radar, lights, cadence sensors, and your Edge device, along with front and rear tire pressures, all in a single data field. No more switching screens mid-ride to figure out which battery is running low. - Battery Grid with Fixed Positions Supports Di2, SRAM AXS, power meters, Varia radar, lights, standalone cadence sensors, and the Edge head unit. SRAM AXS front and rear derailleur batteries are displayed separately. Even with no external sensors connected, your Edge battery level is always shown. Grid positions are fixed by device type rather than battery level, so every sensor is always in the exact same spot. If your power meter broadcasts cadence, the duplicate cadence slot is hidden automatically. Updates at 10-minute intervals to minimize battery drain on your Edge device. - Low Battery Warning When any device drops to 30% or below, its name and remaining level stay pinned at the top of the screen. Unlike fleeting pop-up alerts, this stays visible as long as the condition lasts so you never miss it. Can be turned off in the app settings if not needed. - Shift Failure Detection Counts missed shifts on Di2 and SRAM AXS and alerts you if 3 or more occur during a single ride. Helps you catch derailleur indexing issues or battery degradation early. - Recommended Tire Pressure - NEW Enter your weight in the app settings to calculate recommended front and rear tire pressures based on rider weight, bike weight, and tire width, displayed as REC on the graph. Alerts you with HIGH or LOW if your current pressure deviates by 10% or more from the recommendation. Based on Frank Berto's 15% tire drop chart as a practical reference. Supports tire widths from 20 to 50 mm [estimates are less precise above 37 mm]. Always respect the maximum pressure ratings printed on your tires and rims. Pay special attention to hookless rims, which have lower pressure limits. - Tire Pressure with Temperature Compensation Tire pressure naturally fluctuates with outside temperature changes alone. Uses the ideal gas law to cancel out thermal fluctuations and isolate true air loss. Triggers a slow leak warning if pressure drops by 0.3 PSI or more per minute for 3 consecutive minutes. Long before a warning occurs, tire stability is rated in 3 stages: BEST, GOOD, and WATCH. - No Sensor Required: Estimation Mode Tire pressure sensors are optional. Estimates your current tire pressure from your pre-ride inflation pressure by accounting for changes in temperature and elevation. Starts estimating out of the box using a default of 80 PSI front and rear; enter your actual starting pressure in settings for higher accuracy. Estimated values are clearly marked so they are never mistaken for live sensor readings. On Edge 520 Plus, 820, and Explore, which do not provide temperature data, estimation is based on elevation changes only. - Post-Ride Review in Garmin Connect Records front and rear tire pressure trends as graphs, plus summary stats for minimum battery levels and shift failures. See exactly how temperature shifts affected your tire pressure after your ride. - Hard Braking Detection Detects sudden deceleration from GPS speed changes and marks it on the graph. If GPS signal is lost in a tunnel, it continues calculating using your 5-second average speed right before signal loss. - Zero Calibration No manual calibration required. Once you ride above 10 km/h, it automatically establishes a baseline within 3 minutes. If you pump up your tires mid-ride, it detects the pressure increase and rebuilds the baseline automatically. Settings can be customized in the Garmin Connect app, with clear descriptions for each option. - How to Use In your Edge activity profile, add a new data screen, set the layout to 1 field [full screen], and select Bike Diagnostics from Connect IQ. A full-screen 1-field layout is requi

[Version 1.1.4] - Added recommended tire pressure: Enter your weight in the app settings to display it on the graph - Displays HIGH or LOW if the pressure deviates by 10% or more from the recommendation - Added notes to the app settings - Added the app name and trial expiration info to the purchase screen - Please ensure you do not exceed the maximum pressure ratings for your tires and rims [Version 1.1.3] - Fixed a minor bug. [Version 1.1.2] - Fixed major bugs. [Version 1.1.1] - Added a low-battery warning at the top of the screen. - Fixed a critical bug. [Version 1.1.0] - Fixed major bugs. [Version 1.0.1 - Official Release]