Battery charger for max 12V Li-ion battery. Power cord not included. The Mirka® Intelligent Li-ion battery provides an accurate capacity measurement based on a coulomb counter. With Bluetooth and the myMirka® dashboard, you can easily monitor battery status and available capacity. Detailed data can monitor battery life and using time. Battery firmware can be updated via the sander/polisher's Bluetooth connection. The max 12V 2.5Ah battery has 6 cells and the charging time is around 1h30.