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: AA-PBRN4ZU; Battery Type: Li-ion; Voltage: 15.4V; Capacity: 69.7Wh/4530mAh ; Battery Color: White