Translation guide
In Japanese, 'low voltage' is commonly expressed as 低電圧 (ていでんあつ) in technical contexts. For everyday situations like a low battery, use 電圧が低い (でんあつがひくい) or more naturally バッテリーが少ない (ばってりーがすくない).
Referring to low voltage in electrical engineering, electronics, or power systems.
Standard technical term for 'low voltage'. Used in specifications, manuals, and engineering contexts.
この装置は低電圧で動作します。
This device operates on low voltage.
Descriptive phrase meaning 'the voltage is low'. More conversational than 低電圧.
電圧が低すぎてモーターが動かない。
The voltage is too low, so the motor won't run.
Indicating that a battery or power source is low, such as in a remote control or phone.
Common way to say 'the battery is low'. 少ない means 'little/few', implying low charge.
リモコンのバッテリーが少ない。
The remote control's battery is low.
Means 'the battery is about to die'. 切れそう implies it's almost empty.
スマホの電池が切れそうだ。
My phone's battery is about to die.
Literally 'the voltage is dropping'. Used in more technical or precise contexts, like monitoring battery health.
バッテリーの電圧が下がっているので交換が必要です。
The battery voltage is dropping, so it needs to be replaced.
Referring to signs, labels, or warnings indicating low voltage areas or equipment.
Common warning label meaning 'Caution: Low Voltage'. Often seen on electrical panels.
この部屋には「低電圧注意」の表示があります。
This room has a 'Caution: Low Voltage' sign.
While 低い電圧 (ひくいでんあつ) is grammatically correct, it's less common than 低電圧 in technical contexts. Use 低電圧 for compound nouns and labels.
低電圧回路
low voltage circuit