Customer ServiceRest assured with 30 days Refund and 12 months Warranty; Note: return windows will close after one month, dont worry about it, you can click on seller store on right corner ask a question and contact seller directly. Basic DetailsItem Model: SR04XL; Battery Type: Li-ion; Voltage: 15.4V; Capacity: 70.07Wh/4550mAh ; Battery Color: Black