No problem. The battery of D4S is IP54 waterproof, which can effectively avoid the impact of rain and splashing, but we recommend not to ride in heavy rain considered of safety. Also, please be careful not to soak the e-bike, or clean it with a high-pressure water gun. When passing through pools, stagnant water, etc., please make sure that the wading height is not higher than the hub to avoid damage to the motor.