This 56 Volt EGO POWER+ 12.0Ah ARC Lithium Battery with Fuel Gauge is a powerful, long lasting Lithium battery that delivers Power Beyond Belief. Built-in indicator lights allow you to see how much run time you have left before a recharge is required. Its patented design keeps the battery from overheating, features shock-resistant drop protection and has an intelligent power management system that optimizes each battery cell to maximize power, performance and runtime. Compatible with all EGO POWER+ outdoor power equipment and chargers (equipment and chargers sold separately).