This is a kit with two B380X PACE batteries and one C900X PACE charger. B380X PACE is a high power battery with a capacity of 375 Wh and C900X PACE is a high power battery charger with a capacity of 900 W. Fast charging with active cooling of the battery. Equipped with built-in connectivity so you can easily monitor state of charge, runtime, location and receive wireless updates through FOTA (firmware over the air).