battery life
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battery life
The length of time during which a rechargeable battery can power a device before it has to be recharged.
Die Akkulaufzeit meines neuen Laptops beträgt über zehn Stunden.
The battery life of my new laptop is over ten hours.
This word is a clear compound made up of 'der Akku' (the rechargeable battery) and 'die Laufzeit' (runtime). 'Laufzeit' itself consists of 'laufen' (to run) and 'Zeit' (time). Literally, then, it is the time that a battery 'runs' or functions.
Beim Kauf eines Smartphones ist die Akkulaufzeit ein wichtiges Kriterium.
When buying a smartphone, battery life is an important criterion.
Common verbs used in connection with 'Akkulaufzeit' (battery life) are 'verlängern' (to extend), 'verbessern' (to improve), or 'optimieren' (to optimize). You can also 'haben' (have) a 'lange' (long) or 'kurze' (short) battery life.
Mit diesen Tipps können Sie die Akkulaufzeit Ihres Handys verlängern.
With these tips, you can extend your phone's battery life.
To state the exact duration, the verb 'betragen' (to amount to / to be) or the preposition 'von' (of) is often used. For example: 'Die Akkulaufzeit beträgt 12 Stunden' (The battery life is 12 hours) or 'eine Akkulaufzeit von 12 Stunden' (a battery life of 12 hours).
Der Hersteller verspricht eine Akkulaufzeit von bis zu 20 Stunden.
The manufacturer promises battery life of up to 20 hours.
runtime / term
'Laufzeit' and 'Akkulaufzeit' both describe how long a device or technical process runs. 'Laufzeit' is more general: it can refer to a program, a process, or a device. 'Akkulaufzeit' is more specific and refers only to the time during which a battery powers a device before it has to be recharged. Learners may confuse the words because both could often fit when talking about devices. When the battery is the focus, 'Akkulaufzeit' is more natural. When it is generally about the duration of a program or process, you use 'Laufzeit'.
Im Büro reicht die Akkulaufzeit meines Laptops fast den ganzen Tag.
At the office, my laptop's battery life lasts almost the whole day.
Die Laufzeit des Programms war länger als erwartet.
The program's runtime was longer than expected.