When battery power is low (about 20%), the igloohome Mortise will flash a red low battery indicator when the keypad is lit. Please change your batteries as soon as possible when it is low in battery.

You can also check the status of your battery via the app.

Note: If the lock's battery power is completely out, it may not respond at all. In this case, use a 9V battery to jumpstart the lock.

You may refer to this video to see how a 9V jumpstart can be performed.