Battery type: Lithium ion; Capacity: 40Wh / 2700mAh; Cells: 4-Cell; Voltage: 14.8V; Compatible with Laptop from 2013-2018 only Excellent after-sales service: 12 months warranty, 60 days refund, 180 days replacement, 24/7 mail support, If the return window has closed, please contact us for a refund