電池（でんち、denchi）
- battery

The Japanese word 電池電池, pronounced でんち, refers to a "battery." It is a device that stores chemical energy and converts it into electrical energy. This electricity can then be used to power various electronic devices. ⚫︎ It is a fundamental component of many everyday items. ⚫︎ Different types of 電池 exist, each with varying sizes, voltages, and chemical compositions. ⚫︎ 電池 are typically single-use (disposable) or rechargeable.

⚫︎ 新しい電池を買わなければなりません。 Translation: I need to buy new batteries. ⚫︎ このラジオには電池が必要です。 Translation: This radio needs batteries. ⚫︎ 電池が切れたので、時計が止まってしまいました。 Translation: My watch stopped because the battery died.

You use 電池 when referring to batteries in general. ⚫︎ It's common in conversations about electronic devices. ⚫︎ You'll use it when discussing powering devices, replacing dead batteries, or purchasing new ones. ⚫︎ It can be used for various contexts such as in relation to a remote control, a flashlight, a toy, or a portable audio player.

⚫︎ The standard way to write 電池 is using the kanji 電池. ⚫︎ The reading, in hiragana, is でんち. ⚫︎ There are no common variations in the okurigana.

There are no direct synonyms for the general concept of "battery" in Japanese. However, you might use more specific terms depending on the type of 電池. For example: ⚫︎ 乾電池 (kan電池) - dry cell battery ⚫︎ 充電電池 (じゅうでん電池) - rechargeable battery

There is no direct antonym for 電池. The opposite concept would be "no power" or "not working". However, there are no single Japanese words that correspond perfectly to these antonyms.

このカメラは単三電池を使います。 ・Translation: This camera uses AA batteries. ・Explanation: This sentence specifies the type of 電池 ("単三電池" or AA batteries) used by a camera.

電池交換の仕方を教えてください。 ・Translation: Please teach me how to change the battery. ・Explanation: This sentence asks for instructions on replacing the 電池.

The word 電池 is a compound word: ⚫︎ 電 (den) means "electricity" or "electric." ⚫︎ 池 (chi) means "pond," "pool," or "reservoir," but here it conveys the idea of a container or storage. ⚫︎ Therefore, 電池 literally translates to "electric reservoir" or "electricity storage," reflecting its function as a device that stores electrical energy.