www.safetyandhealthmagazine.com/articles/daylight-saving-time-change-your-batteries-when-you-change-your-clocks-2

Daylight saving time: Change your batteries when you change your clocks

November 2, 2011

Daylight saving time ends Sunday, Nov. 6. This is a great opportunity to test your smoke alarm and carbon monoxide detector batteries and change them, if necessary, when you switch your clocks. This small step could save a life: Two-thirds of fire deaths occurred in homes with no smoke alarms or no working smoke alarms.