Nugraha, I.; Anshori, H. Z.; Arier, T. N.; Aliya, I. N.; Ningrum, D. M.; Gufron, A. Utilization of Siwalan Waste (Borassus Flabellifer L.) As a Prototype of Active Carbon-Based Batteries Using Brunauer Emmett Teller (BET) and Analysis of Variance (ANOVA) Method. IJIEM 2025, 5, 663-670.