my luggage left in ghuangzhou airport due to battery.

After i reach airport in kota kinabalu sabah, my luggage didnt come out from trail. Then i know i realised my luggage is still in ghuangzhou airport due to battery that is inside my luggage. How possible i can get my luggage back? Its been more than 15 days already. I used airasia flight during my travel. Do they still keep my luggage? Please give me information regarding this. Thank you