To charge, simply plug in unit. Battery does not need to be removed to be charged. Lift will not operate while plugged in. Ideal for home-care use. Jumbo actuator pump with emergency button can switch to manual mode to lower patient down safely. Base legs adjust easily and lock securely into open position with padded shifter handle. Extra wide coated cradle with 360° rotation with 4-point hook up. (Can fit under bed) Weight Capacity 600 lbs.