This is the 11992nd most frequent Polish word.
laptop
A portable computer.
Here, 'laptop' is used as a direct object of the verb 'mam' (have), indicating possession.
Mam nowy laptop, który świetnie działa.
I have a new laptop that works great.
In this sentence, 'laptopie' is the locative form of 'laptop,' used with the preposition 'na' to express the location where movies are watched.
Na moim laptopie oglądam filmy wieczorami.
I watch movies on my laptop in the evenings.
The word 'laptopie' is again in its locative form, specifying the location where the battery is.