Xiaomi electric scooter 4 pro 2nd gen datenblatt July 8, 2019 16 32 64 128 Xiaomi electric scooter 4 lite 2nd gen datenblatt Scooter xiaomi 4 pro Scooter xiaomi 4 Xiaomi scooter 4 ultra test Xiaomi scooter pro 2 vs 4 pro Xiaomi scooter pro 2 battery
