電池

1. Origins, structure, and basic meaning

• Structure: 電池 is read as でんち and is a noun for a cell or battery that supplies electrical energy to a device.
• Basic usage: Replacement appears in 電池を交換する, while counting cylindrical cells appears in 電池を二本使う.

2. Common pitfalls and similar expressions

• Object and electricity
  • 電池 is the physical power source, not electricity as a phenomenon.
• Shape and counters
  • Cylindrical batteries are commonly counted with 本, while other forms may take different counters.