Daylight Saving Time: When You Change Your Clocks, Change the Batteries in Your Smoke Detector Email Nov 3 is the end of Daylight Saving Time, which means we have to move the clocks back an hour. But Daylight Saving Time is also the perfect time to check your smoke detectors and change the batteries! When it comes to fire safety, it’s always better safe than sorry. When you change your batteries, remember to recycle your old ones. Never throw batteries in the trash — they contain dangerous metals and corrosive chemicals that can leach into the environment. In Lincoln, we have two programs for battery recycling. The Battery Recycling Program is a drop-off program, and the Free Universal Waste Collection Program is a pick-up program. Find out more about how to recycle batteries.