Switch the Snuza Go OFF. Remove the battery for 10 seconds and do not press any buttons while the battery is out. Place the battery back in the Snuza GoDo not switch the Snuza Go ON. Does the Snuza Go start alarming with the Battery Indicator Light flashing red? If yes, then If the Snuza Go is still under the twelve month guarantee contact Customer Care by completing the form on the contact us page.