The results obtained on the photoelectric battery (PVB) and photothermal battery (PTB) based on a new type of autonomous moving cooling system photothermal devices (PTD) are presented in this research work. This new type of device (PTD) is self-cooling and has the ability to provide hot water for the village residents while increasing the efficiency of the PTB. There was created a new experimental copy of the device with a power of 300 W based on the design of the PTD with a new type of cooling system with a power of 60 W mentioned in previous scientific research. It consists of a 180 W PVB, a 60A•h battery, a 2kW inverter, a 50A controller, a radiator for cooling hot water, 5 cooling fans, a pump, and a cart-shaped structure for their installation. It is possible to get results in two different situations in the experimental copy with a new type of cooling system. It is possible to increase the efficiency of PTD by fully using the cooling system, and to obtain hot water for the household without a sharp decrease in efficiency by partially using the cooling system. There is mentioned a study of hot water regimes with a temperature of 40-50 0C for the agricultural sector, depending on the intensity of solar radiation and ambient temperature. Preliminary tests showed that the power of the PTD differs from the power of the PVB by up to 70 W. This new PTD showed that it is possible to use it in many other cases, such as water supply, lighting, watching TV, listening to the radio, using a refrigerator, charging computers and phones in rural areas.
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