The EGO 56V 7.5Ah ARC Lithium Battery uses industry leading technology to deliver Power Beyond Belief. Its patented ARC Lithium design keeps the battery from overheating by pushing heat away so your equipment runs longer at full power. Its durable, shock resistant design protects batteries from drops and the elements. Intelligent power management monitors and optimizes each individual battery cell to maximize power, performance, and runtime. This 7.5Ah battery features a fuel gauge with built in indicator lights that show how much runtime is remaining in 20 percent increments. The 7.5Ah battery fully charges in 45 minutes with the EGO POWER+ Turbo Charger (CH7000), 60 minutes with the Rapid Charger (CH5500), 100 minutes with the 320W Charger (CH3200), and 145 minutes with the Standard Charger (CH2100). Two 7.5Ah batteries will fully charge in 120 minutes with the EGO Power Dual Port Charger (CH2800D). With the industrys most advanced battery technology, every EGO tool delivers or exceeds the power and performance of gas without the noise, fuss, or fumes.