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: 00HW044 ; Battery Type: Li-ion; Voltage: 11.25V; Capacity: 42Wh/3735mAh ; Battery Color: Black. Compatible P/N 00HW044 SB10J78992 00HW043 SB10J78991 00HW042 SB10J78990. Compatible Laptop ModelsFor Lenovo ThinkPad Yoga 11E 3rd Gen Series; Lenovo ThinkPad Yoga 11E Chromebook Series; Lenovo 20G8-S03400 20GA Series. NoteThe package includes: 1*battery and 1*Instructions. Packaged by sponge or bubbles to prevent damage. Before purchasing, please open the back cover of the laptop to confirm the battery model and shape.