Nand filesystem is getting corrupted

[bpir1]

Hi all,

I have a20-olinuxino-micro nand board. I am experiencing the problem of file system corruption when power supply failure. For preventing this I am using batter which will give backup when main power supply turns off. Even though battery is present, I am experiencing files getting corrupted when power supply fails. This causes my files getting corrupted so that I am unable to access them.

Is there any way to prevent them from getting corrupted? Please help me with this?