I want to travel to China with my travel mobility scooter from Australia.

My question is in regard to the battery for the scooter. It features 11.25 Ah Lithium-Ion (Li-Ion) battery. I have read somewhere that China has specific rules that relate to bringing batteries into the country. As the battery costs $800 approx. I would hate take it with me only to have the battery confiscated at customs in China