This is the 7313th most frequent Japanese word.
乾電池
Dry cell battery.
Here, '乾電池' refers to standard batteries used in everyday devices.
新しい乾電池を買ってきました。
I bought new batteries.
'乾電池' denotes used or expired batteries requiring proper disposal.
古い乾電池を捨てる時は、環境に配慮してください。
Please be mindful of the environment when disposing of old batteries.
In this sentence, '乾電池' is used to specify the type of power source required for a remote controller.