Dentsing L13M4P21 7.4V 34Wh 4600mAh Battery for Lenovo YOGA 2 11 20428/ 20332 11.6" L13L4P21 Model:L13M4P21 Color:Black Voltage:7.4V Capacity:34WH Compatible P/N: L13M4P21 L13L4P21 Compatible with:Lenovo IdeaPad Yoga 2 11 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.