Fatimah, Siti, Putut Marwoto, and Sunyoto Eko Nugroho. “The Electrical Characteristics of Fruit Peel Waste As a Biobattery in Terms of Fermentation Time and Coconut (Cocos Nucifera L.) Pulp Concentration”. Jurnal Penelitian Pendidikan IPA 9, no. SpecialIssue (December 25, 2023): 1008–1016. Accessed September 8, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/6477.