For extreme cold (below -20°C), the only sensible choice is a two-stage gas-powered snowblower with a 4-stroke engine designed for low temperatures, an electric starter, and the appropriate winter oil. The capacity of Li-Ion batteries decreases by 35–40% for every -10°C, and the viscosity of 10W-30 oil at -20°C exceeds 10,000 cP, which makes starting impossible. Loncin Snow Series engines are tested down to -30°C and form the basis of the recommended Cedrus and Mastercut models available in the EWIMAX lineup. The choice of a specific model depends on three factors: the size of the area, the terrain (wheels versus tracks), and the desired level of comfort (heated handles, LED lighting).