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: 01AV430 / SB10K97587; Battery Type: Li-ion; Voltage: 11.52 V; Capacity: 57Wh/4830mAh; Battery Color: Black