Lenovo OEM Parts Item Model: L16L4PB1; Battery Type: Li-ion; Voltage:7.72V; Capacity: 48Wh/6217mAh; Battery Color: Black.(Note: Only fit for YOGA 720 13" laptop and YOGA 730 13" laptop, NOT fit for YOGA 720-12", 720-15", 730-15", 720S S730 laptop.) 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.