also: バッテリバックアップ
noun
battery backup
Computing term for a backup power source using a battery, often used in contexts like UPS or memory retention.
サーバーにはバッテリーバックアップが必須です。
Battery backup is essential for the server.
停電時にバッテリーバックアップが作動した。
The battery backup activated during the power outage.
More formal term for an uninterruptible power supply (UPS), while バッテリーバックアップ is a broader, more colloquial term for battery-based backup.
Loanword from English 'battery backup'.