How long does the Heart Rate Monitor battery last?GPS BroMarch 29, 2010FAQ The battery life installed in HRM is about 3 years, when used for about 1 hour a day. Share this: Click to email a link to a friend (Opens in new window) Email Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Click to share on Pinterest (Opens in new window) Pinterest Like this:Like Loading...