Batteries with a capacity of 0–4.9 kWh are energy storage units for low-power solar systems, ideal for holiday homes, smaller households, garages, or off-grid systems. These batteries allow for the efficient storage and feedback of generated solar energy, reducing grid energy consumption and increasing self-consumption. Small-capacity energy storage units are perfect for providing basic functions – such as lighting, cooling, or operating smaller household appliances – where there is no continuous grid supply.

The models available in this category utilize advanced lithium iron phosphate (LiFePO₄) technology, which is safe, long-lasting, and has high cycle stability. The integrated BMS (Battery Management System) monitors the condition of the cells, preventing overcharging or over-discharging. Due to their compact size and modular design, 0–4.9 kWh batteries are easy to install and can even be expanded later if the system's energy demand increases.