Specifications Replacement Battery for Lenovo thinkpad battery, Type: Li-ion;Our L18L4P71 Battery Replacement for Lenovo Standard Rechargeable li-ion battery Type L18L4P71 Voltage:15.4V; Capacity:51Wh 3312mAh; Cells:4 cells; Color: Black;Condition: New; Battery lasts: 3-6 hours, Packages includes: 1x L18L4P71 laptop battery,2 x Free Screwdrivers,1x Instruction for Laptop battery Fully compatible and high stabilityFit for Lenovo ThinkPad X1 carbon battery,Fit for Lenovo Yoga battery replacement,Fit for lenovo thinkpad x1 yoga g1 battery.For 4th Gen / X1 Yoga 2019 Gen, ThinkPad X1 Yoga 5th Gen / X1 Yoga 2020 Gen, ThinkPad X1 Carbon 7th Gen / X1 Carbon 2019 Gen, ThinkPad X1 Carbon 8th Gen / X1 Carbon 2020 Gen Series Notebook. Replacement Battery Part NumbersBattery for 02DL006 L18C4P71 SB10K97644 02DL004 L18L4P71 SB10K97642 02DL005 L18M4P72 SB10K97643 OUWEE Perfect After-saleRest assured with 30 days money-back and 12 months Warranty;24 x 7 email support. Any questions you