【Specifications】Battery Type: Li-ion . Voltage: 15.2V ; Capacity: 52WH . 【Compatible Part Number】 SB10K97566 SB10K97567 SB10F46466 SB10F46467 00HW028 00HW029 01AV457 01AV441 01AV439 01AV458 01AV410 01AV409 01AV444 01AV438 01AV440 . 【Replacement For Laptop】For Lenovo Thinkpad X1 Carbon 4th Gen 4 (2016) ThinkPad X1 Yoga Gen1 Gen2 Laptop . 【Quality Assurance】100% new from manufacturer, every battery has passed factory testing, grade A cells ensure fast charges and low power consumption, built-in circuit protection ensures both safety and stability. CE / FCC / RoHS Certified for safety. 【After Sale】We will provide 24 x 7 Email Support, 12-Month warranty and 30 Days Money Back Guarantee.Any question,please feel free to contact us.