7.5 Ah, 56 Volt, lithium-ion battery: Industry’s most powerful battery, 40 % more power: Compared to leading 40 V battery systems.Compatible with all Ego Power+ garden tools.Very short charging time: charges in approx. 60 minutes with the fast charger, in approx. 145 minutes with the standard charger.Built-in charge indicator: Shows how much energy is left in the battery.Built-in Keep Cool technology: Cools battery cells for longer life. Unique power management system: Protects batteries from dangerous current spikes and overload.