This circular saw is cordless, so no need to bother with cords and such. It has a voltage of 60 volts and isn't all too heavy at 3.6 kg.
From Amazon
Dewalt DCS575T2-GB Precision Circular Saw with 2 Batteries, 54 V, Yellow/Black, 67 mm, Set of 8 Piece
Powertool World
DeWalt DCS575T2-GB 54v XR FLEXVOLT Brushless 190mm Circular Saw Inc 2x DCB546 Batts
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