Welcome to OUWEE
Before placing your order, we highly suggest you to open the back case of your latptop and check out the exact part number of your laptop's original battery.

1.Battery Type: Rechargeable Li-ion Battery
2.Model: L18C4P71
3.Voltage: 15.36V
4.Capatity: 51Wh 3325mAh
5.Connector: Please refer to the picture and check it.
6.Certificate: CE,RoHS,FCC，100% New from Manufacturer, Grade A Cell
7.Worry-Free Warranty:
At OUWEE, we believe in our battery. That's why we back them all with an 12-month warranty and provide friendly customer service, easy-to-reach support.

8.Replacement for Part Number:
02DL004 L18L4P71 SB10K97642 02DL005 L18M4P72 SB10K97643 02DL006 L18C4P71 SB10K97644

9.Compatible Models (use "Ctrl+F to find your model quickly")
Fit for Lenovo ThinkPad X1 Yoga 4th Gen / X1 Yoga 2019 Gen Series
Fit for Lenovo ThinkPad X1 Yoga 5th Gen / X1 Yoga 2020 Gen Series
Fit for Lenovo ThinkPad X1 Carbon 7th Gen / X1 Carbon 2019 Gen Series
Fit for Lenovo ThinkPad X1 Carbon 8th Gen / X1 Carbon 2020 Gen Series

10.Package included:
1X L18C4P71 Battery.

11.For Optimal Use battery:
①Discharge the new battery to 5% (not 0%), then charge and cycle 3-4 times to wake up the new battery.
②The important point is to perform a full discharge charge every other month to extend battery life.
③Don't connect adapter for a long time while using the battery. It may damage the battery.
④Avoid artificial shocks, disassembly, crush or puncture. Do not dispose of in fire or water.
⑤Avoid using the battery in an environment where the temperature is too high or too low.