It's been more than 4 months the bike didn't work since the hub motor easily accumulate heat that make the planetary gears frame deformed causes noise even seized,finally parched the grease of the rear sprocket and stuck the ratchet
Replaced the 500 w hub motor and installed a 350 w one, I rode the bike 117 km last weekend,the mileage also increased from 55 km/1 battery to 80(16 Ah) & 95 km(17.5Ah) Batteries, young people could ride the bike in a speed 25~30km/hr 200+ km/day in a journey