Rfid RC522 consumes more power

Hello I am using Rfid RC522 with UNO for mifare card reading for locks and they are battery powered and I noticed that I used 6v battery and it drains in just 2 days,I improved my code and used power saving modes for arduino, but I don't know how to optimise the power usage of Rfid RC522 is there something like it can go in sleep mode and wakes up when detects any cards.Any idea ??