A cordless mower (10) includes a deck (50), a rechargeable battery (12), a blade (16) for cutting grass, a blade motor (54) and a drive motor (56). The deck is supported by front and rear wheels (30) and has a top side, a bottom side, a front end and a rear end. The rechargeable battery is supported on the deck. The blade is on the bottom side of the deck and is coupled with a blade motor. The drive motor is connected to the rear wheels for driving said rear wheels to move the mower. The drive motor is located in a chamber (91) at the rear of the mower adjacent the rear wheels. The chamber has an opening (92) therein to allow air to flow through.
