Beagle Bone Black DC Power and Battery Cape

Hello everybody,

I want my BBB keeps ON always although DC power supply fails.

I am planning to use the BBB with the Battery Cape, but I am unable to find if it is possible.

The main idea is to power ON my BBB from DC all time and when power supply goes down, the battery cape act as a backup battery without system restarting.

My question: Is possible to do it? or, do I need to use a different circuit (of battery backup) that allows that?

Many thanks,