Dion Nicky Brilian, Budi Supiawan, and Azhar. “DESIGN AND DEVELOPMENT OF A PORTABLE MINI WATER HEATER USING BATTERY POWER FOR MOUNTAIN CLIMBERS ”. Journal of Frontier Research in Science and Engineering 4, no. 1 (March 30, 2026): 25–30. Accessed April 2, 2026. https://journal.riau-edutech.com/index.php/jofrise/article/view/191.