56V Battery 2.0 Ah Battery 40 minute charge time from zero to full charge56V Battery 4.0 Ah Battery 80 minute charge time from zero to full charge56V Battery 6.0 Ah Battery 115 minute charge time from zero to full chargeFan Cooled Charging System Prevents the battery and charger from overheatingIntegrated Fuel Gauge Shows how much power is left in the batteryIntegrated LED Charge Indicator Lights To let you know if your battery has a full charge or notCharges all EGO Power Plus Batteries