Featuring a powerful brushless motor Line-Trimmer Powered by a Samsung cell Lithium Ion battery for long runtime, constant no-fade power, it runs cleaner, quieter and is free from the hassles of petrol or cords. Pull the trigger and you have an instant start, long run time and able to hold charge in storage for months. Instant Start - No pull cords. No warm up. No petrol-oil mixing. No emissions.