One area that interests many researchers is the development of nanoparticle synthesis methods. Nanoparticles can occur naturally or through a synthesis process by humans. Nanoparticle synthesis means making particles less than 100 nm in size and simultaneously changing their properties or functions. Durian skin powder nanoparticles were synthesized using the coprecipitation method. Where the coprecipitation method is one method of synthesis of inorganic compounds based on the deposition of more than one substance together when it passes the saturation point. Coprecipitation is a method that processes using low temperatures and is easy to control particle size so that the time needed is relatively shorter. EDTA is used to control the crystal size (diamin tetra acetate ethanol) is a titrating ligand that is widely used in complexometric titration. EDTA added was varied by 10 drops, 15 drops, 20 drops and 25 drops to see the change in crystal size that occurred. This crystal size control aims to obtain maximum electrical performance in durian leather powder. The maximum electrical voltage obtained by adding EDTA little by little is 5.5 Volt with maximum droplets as well and the crystal size is 4.9 nm. The performance of the partners obtained is not that different from the others. So that it can be said that the voltage will continue to increase when the size of the crystal gets smaller and the addition of EDTA increases the droplets increasing the value of the electrical voltage and reducing the size of the crystals of the durian leather powder.