That this mitre saw runs on a cord means a constant, stable supply of power. The saw has a voltage of 230 volts and weighs 10 kg, so it's not that heavy to carry around.
From Amazon
Evolution Power Tools R185SMS+ Compound Saw with Multi-Material Cutting, 45 Degree Bevel, 50 Degree Mitre, 210 mm Slide, 1200 W, 210 mm, 230 V, (3-Year Warranty)
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