This is the 10039th most frequent Polish word.
bateria
"Battery" - a device that stores and provides electrical energy.
The word 'bateria' is used here to refer to a cell or battery in an electronic device, indicating its energy state.
Bateria w moim telefonie się rozładowała.
The battery in my phone has discharged.
Here, 'bateria' refers to a drum set, an arrangement of percussion instruments played together.
Podczas koncertu perkusista używał swojej baterii.
During the concert, the drummer used his drum set.
In this case, 'bateria' is used to mean a set or collection, in this context referring to utensils.