H. R. Iskandar, C. B. Elysees, R. Ridwanulloh, A. Charisma, and H. Yuliana, “ANALISIS PERFORMA BATERAI JENIS VALVE REGULATED LEAD ACID PADA PLTS OFF-GRID 1 KWP”, JurTek: Jurnal Teknologi, vol. 13, no. 2, pp. 129–140, Jul. 2021.