Solar power plants with an Off-Grid system utilize batteries as a storage medium for energy produced from photovoltaic modules because the system is offgrid. In this study, tests were carried out using VRLA (Valve Regulated Lead Acid) and lithium batteries with linear and non-linear loads by using Polycrystalline and Monocrystalline modules. From the observation of 4 experimental data that we can analyze for a more optimal PLTS system circuit using Monocrystalin solar panels and using Lithium batteries because of the measurement data shows that optimal current and voltage for PV absorption and output is greater than that others with the same average irradiation and the same load used. For loads that are used from several types of linear and non-linear loads with the same capacity of10 watts which are absorbed more from the battery output are non-linear loads (Balast lamps and Incandescent lamps (AC) compared to LED lamps. For a longer and optimal battery use Lithium batteries because the current coming out of the lithium is always stable and there is a battery management system in the cells of the lithium battery and input and output from the inverter is more optimal by using lithium batteries.