Voltage storage analysis of galvanic cells with silver coated cathodes using sea water electrolyte on power bank type lithium polymer 4000 mAh and rechargeable battery type NiCD 900 mAh

The main objective of research on alternative energy sources is how energy sources are produced and how the energy is stored. Power generated by energy sources must be able to have the ability to enter existing energy storage devices. This study aims to analyze the ability to charge voltage from a seawater galvanic cell energy source to a 5 volt 4000 mAh lithium polymer power bank and a 2.4 volt 900 mAh NiCD rechargeable battery. Galvanized cells were made in a series of as many as 20 cells using copper electrodes coated with silver as cathode and zinc as the anode. Real-time voltage and current acquisition system using Arduino-based INA219 sensor. The result of the research is that the charging voltage on the power bank can reach 25% with an average power of 40.09 mW, and the charging voltage on the rechargeable battery can be optimal at 2.61 volts, with an average power of 32,8 mW.