Many vintage radios still run on zinc-carbon batteries, although they drain faster than modern alkaline cells.

We kept several dry cell batteries in the drawer for the flashlight.

The batteryless sensor continued to transmit data by harvesting ambient energy.

Technicians swapped out the failing batterymates to keep the emergency lights working during the storm.

The archaeologist carefully examined the batterylike artifact and noted its corroded terminals.

Before the hiking trip, I packed my batterymate so my GPS and phone would stay powered.