What is the expected battery life for sensor batteries? Rossi December 07, 2016 17:43 Updated Follow Battery life is determined by the usage of the sensors. In most cases, the batteries will last about a year. Related articles Are the batteries in Notion sensors replaceable? Will Notion alert me when a sensor is running low on power? Will Notion alert me if the power goes out? Can anyone use the Notion API? What if my sensor battery dies? Comments 0 comments Article is closed for comments.