This is the 2894th most frequent Dutch word.
accu
Battery.
Here 'accu' refers to the car battery used in automobiles as a power source.
De accu van mijn auto is leeg.
The battery of my car is empty.
In this sentence, 'accu' denotes the rechargeable battery used in electric bicycles.
Ik heb een nieuwe accu gekocht voor mijn elektrische fiets.
I bought a new battery for my electric bike.
'Accu' in this case is used to describe the built-in rechargeable battery in devices like phones.