battery
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battery
A device that generates and stores electrical energy through chemical reactions in order to supply other devices with power.
Ich muss die Batterien in der Fernbedienung wechseln, sie sind leer.
I need to change the batteries in the remote control; they're dead.
In English, 'battery' can also mean a physical attack, as in 'assault and battery.' The German word 'die Batterie' never has this meaning. It always refers to objects.
Für die Taschenlampe brauche ich zwei neue Batterien.
I need two new batteries for the flashlight.
In connection with the energy source, the most common verbs are 'wechseln' (to change), 'einlegen' (to insert), 'herausnehmen' (to take out), and 'aufladen' (to recharge). You also say that a battery is 'leer' (dead/empty).
Die Batterien sind leer, du musst sie aufladen.
The batteries are dead; you need to recharge them.
When 'Batterie' (drum kit) is mentioned in the context of music or a band, it almost always means the drum kit. The musician sits 'hinter der Batterie' (behind the drum kit).
Der Musiker spielte ein beeindruckendes Solo auf seiner Batterie.
The musician played an impressive solo on his drum kit.
The expression 'eine Batterie von ...' (a battery of ...) is used to describe a large quantity or a long series of similar things. It is often combined with abstract nouns like 'Tests' (tests) or 'Fragen' (questions).
Im Bewerbungsgespräch wurde mir eine ganze Batterie von Fragen gestellt.
In the job interview, I was asked a whole battery of questions.
This meaning is limited to military usage. If you hear words like 'Artillerie' (artillery), 'Geschütz' (gun), or 'feuern' (to fire), this military unit is meant.
Die Batterie erhielt den Befehl, das Feuer zu eröffnen.
The battery received the order to open fire.
row / series
'die Reihe' and 'die Batterie' can both mean a set of similar things arranged together or one after another. 'die Reihe' is the normal, neutral word for things or people in a line, or for a sequence. 'die Batterie' is used in this meaning more when many things of the same kind are placed close together or appear as a group. It sounds stronger and often a bit more figurative, for example with many questions, tests, or devices. For a simple line, it is better to say 'Reihe'; for a large, striking set, 'Batterie' can sometimes fit.
Im Labor steht eine ganze Batterie von Messgeräten auf dem Tisch.
In the lab, a whole battery of measuring devices is on the table.
Vor dem Kino steht eine lange Reihe von Menschen.
There is a long line of people in front of the cinema.