Metabo HPT’s compact 18-Volt 3. 0Ah lithium ion battery delivers all the power and run time of a conventional 3. 0Ah lithium ion battery, but in a smaller footprint with less weight. The battery is ¾ of an inch less in height and weights 0. 6 lbs less than a conventional 3. 0Ah lithium ion battery. The compact 3. 0Ah battery makes any Metabo HPT / Hitachi tool it powers lighter, more comfortable and highly convenient for the user. The batteries are equipped with a Multiplex Protection Circuit to prevent over-load, over-charge and over-discharge that further extends their overall battery life. The batteries are covered by a 2-year for peace of mind.