Extra luggage

I flying on southern china airline 19 April 9 am. My name is Renata Pascoe and I flying with Alan Koiter. Our flight numbers are 7845080014801 and 7845080014802. I want to know if we can bring extra luggage. It's an electric scooter wieght aprox 90 kg. the battery is removable. Also an electric fold up bike weight 34 kg. The battery is factory sealed and not lithium.
Thankyou