kobalt kobalt batteries are interchangeable within kobalt product lines of the same voltage the power to complete any task available in 40v or 80v 80v max rwo new 40-v 20" self-propelled cordless lawnmower exclusive new 80-v 20" self-propelled cordless lawnmower exclusive craftsman v20 battery system one system endless possibilities now part of our v20 system craftsman lithium ion erritsman new 2x20-v max cordless lawnmower exclusive one simple battery powers over 50 different tools high efficiency brushless motor fold over handle and vertical storage • 10" deck height for easy access to hard-to-reach areas outdoor power equipment