The EGO POWER+ 56-Volt 2.5Ah battery uses industry-leading ARC Lithium technology to deliver Power Beyond Belief and is compatible with all EGO outdoor power equipment. Keep-Cool battery technology keeps each cell cool for long life and work in the most extreme conditions. The EGO POWER+ 320W Charger monitors and controls each cell in the battery pack to control temperature for maximum battery life. With industry leading recharge times, fully recharge a depleted 2.5 Ah battery in just 35minutes. The active cooling fan system supports rapid charging without overheating. The quick recharge capability ensures limited downtime with any battery in the EGO platform.