Powerhead 500 Synchronized Smarter energy. Greater power. The STIGA battery powertrain has revolutionized the lawn mowing market by changing the petrol engine into a battery one without compromising on performance. Now it’s time to do it again. The new Powerhead 500 Synchronized adds a new smarter way to manage energy.. Two synchronised batteries working to create smarter energy usage, longer life span and even greater power. SMARTER ENERGY USAGE The synchronised system concurrently utilises power from both batteries to improve energy usage. LONGER LIFE SPAN As the batteries work simultaneously, there is less 'wear & tear' to both the battery and powerhead resulting in a longer life span. EVEN GREATER POWER Setting a new standard as the two batteries balance themselves: higher energy is delivered simultaneously with no need to switch battery during mowing session. 8