Bongkar MP3 Player 20 ribuan sekalian ganti batre jadi 2 batre 18650 bisa masuk agar tahan lama

I bought it here: https://shope.ee/Au0QNIMGe Battery Link: https://shope.ee/7KOJdiM2XA Add a battery for an MP3 player for 20,000 Rupiah - the original battery is too small. Can I replace it with 2 18650 batteries? I bought it to play 24-hour murroral... A 20,000 Rupiah speaker is comfortable enough if not for music. Murotal speaker, Bluetooth speaker, murotal speaker, Quran speaker, cheap speaker, cheap speaker, speaker, portable speaker, USB speaker, USB speaker, SD card speaker, FM speaker