Maulidina, Miftakhul, and Muhammad Nur Habib Maulidan. 2026. “Handhled Air Quality Monitor Powered by ESP32 and Li-Ion Battery Management for Real-Time Field Inspections”. JTEIN: Jurnal Teknik Elektro Indonesia 7 (2):259-70. https://doi.org/10.24036/jtein.v7i2.913.