<![CDATA[There are so many natural resources that have not been used as a source of electrical energy, one of which is a material that can be used as an alternative source of electrical energy, namely banana peel, a material that is very easy to find in the surrounding environment. It contains carbohydrates and is rich in minerals such as potassium, magnesium, phosphorus, chloride, calcium, and iron. Carbohydrates contain glucose, when glucose is mixed with water and left in an airtight space for several days, fermentation will occur so that ethanol can be obtained. Ethanol will eventually be oxidized to an acid electrolyte. The purpose of this research is tomeasuring the value of no-load voltage, load and load current. The composition of the Ambon banana peel solution consists of water and banana peel which is divided into three groups A1, B1 and C1, with a long fermentation time of 18 days or 360 hours. The results of the measurements in this study with three different compositions obtained the highest value, namely the composition of C1 with a no-load voltage value of 9.53 Volts, a load of 8.66 Volts and a load current of 13.24 mA]]>
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