With all the power outages and chaos caused by Hurricane Sandy this week, it’s easy to forget that the day will seem to grow shorter this weekend.

Daylight Savings Time ends at 2 a.m. Nov. 4, this Sunday — so don’t forget to set your clocks accordingly, engineers!

This is also a good time to change batteries in smoke alarms, check or replace batteries in infrequently used gear, and assess batteries that help devices retain memory in case of failure.

All portable test gear and any other device that runs on battery power or uses batteries as backup — well, you know what to do.