11.   It has a permanent backup so that batteries can be changed without loss of memory, and is upgradeable for new products as they come along.

12.   It also has to change the batteries in the equipment and make sure they are still working after months of being shut down.

13.   It could mean a lot less fumbling to change the batteries before the baby moves.

14.   No, it is not time to change the batteries in the calculator.

15.   Of course you could ask the next assailant to politely wait while you change your batteries.

16.   Parking cars, changing batteries, the kind of work to put life in perspective.

17.   The clerk in the appliance store changed the battery and put the clock in a large brown bag.

18.   Then, if you change battery types, check at the store to find a charger compatible with your new batteries.

19.   This is like installing smoke detectors in your home and then never changing the batteries.

20.   When setting clocks forward, change batteries in smoke alarms and carbon monoxide detectors.