Nosfet Apex Centre Fairing Plate

Add some little strips of VHB to the narrow bit on the rear where it contacts the recess in the battery casing to secure the plate. Then when applying Velcro to the wheel ensure you use one large sheet which will contact both the plate and the battery casing to fully secure it. (demonstrated in pic 2)

You could probably modify Z height to make it fit different pad setups but I've yet to try personally. It was originally designed to fit my knobs, hence have a relatively low Z height.