Specifications: Battery Type: Li-ion Voltage: 7.5V Capacity: 2387MAH 18Wh Color: White Certificate: CE,RoHS,FCC Condition: 100 Percent New from Manufacturer, Grade A Cell, 12 Months Replace Part Number: DAK822470K G3HTA020H G3HTA044H Compatible Laptop/Notebook Models: For Microsoft Surface Book 1 1703 1704 1705 (This battery is installed under the screen) Book 2 13 inch(Cannot fit for book 2 15 inch)