SKIL 0140BA 43cm Cordless Lawnmower Brushless 2x 20V Max LiPart of the SKIL Energy Platform: THE flexible battery system 'Keep Cool' battery technology ensures 25% longer run time and 2x the lifetime The performance of '40V Max' with 2 x SKIL '20V Max Keep Cool' Lithium Ion batteries Our patented ActivCell technology works to optimise power usage, preventing overheating and maximizing battery performance Brushless motor: faster, stronger and lasting 10x longer 43 cm cutting width for quick mowing and mulching