乾電池

1. Origins, structure, and basic meaning

• Structure: 乾電池(かんでんち) refers to dry-cell batteries used in devices such as clocks and remote controls.
• Basic usage: It describes replacing the battery in a stopped clock.
  • 時計が止まったので、乾電池を交換した。

2. Common pitfalls and similar expressions

• The broader word for a battery
  • 電池(でんち) is the broader word for a battery, while 乾電池 specifically identifies a dry-cell battery.
• Replacement and recharging
  • 乾電池を交換する means replacing the installed batteries with others. 充電する(じゅうでんする) is a different action: restoring an electrical charge.