Dentsing L12M4P21 Battery 7400mAh/54Wh for Lenovo Yoga 2 Pro 13 Series L13S4P21 Model: L12M4P21 Color:Black Voltage:7.4V Capacity:54WH Compatible P/N:L12M4P21 121500156 21CP5/57/128-2 L13S4P21 Compatible with:Lenovo Yoga 2 Pro 13 Series 6 Months Warranty. If you have any issue, please contact us, we will help you resolve it before you leave a negative feedback or low review.Thanks for your kind support and patience.