Specifications: Battery Type: Li-ion Voltage: 11.55V Capacity: 3482mAh 40.22Wh Color: Black Certificate: CE,RoHS,FCC Condition: 100percent New from Manufacturer, Grade A Cell, 12 Months assured Replace Part Number: 3ICP55872, AP19A8K Compatible LaptopNotebook Models: For ACER Chromebook Spin 311, cp311-1hn-c2dv, cp311-2h-c679