Dentsing L18L4P71 15.4V 51Wh/3312mAh 4-Cells Laptop Battery Compatible with Lenovo ThinkPad X1 Carbon 7th 8th Gen 2019 X1 Yoga 4th 5th Gen Series SB10K97642 02DL004 L18M4P72 02DL005 L18C4P71

Battery ModelL18L4P71Battery TypeLi-ionVoltage15.4 VCapacity51 Wh / 3312 mAhCondition100% Brand New From ManufacturerPackaging1* battery + 1* instruction manual We suggest you open your laptop case to check and confirm your original battery model and appearance, compared with our battery image, make sure that's what you need. Especially the connector location and type, the cable length (long or short etc).

Replacement for Part Number
L18L4P71 L18C4P71 L18M4P72
02DL004 02DL005 02DL006
5B10W13930 5B10W13931 5B10W13932
SB10T83173 SB10T83174 SB10K97642 SB10K97643 SB10K97644

FIT FOR:
Lenovo ThinkPad X1 Yoga 4th Gen (X1 Yoga 2019 Gen) Series
Lenovo ThinkPad X1 Yoga 5th Gen (X1 Yoga 2020 Gen) Series
Lenovo ThinkPad X1 Carbon 7th Gen (X1 Carbon 2019 Gen) Series
Lenovo ThinkPad X1 Carbon 8th Gen (X1 Carbon 2020 Gen) Series

New battery received, discharge the battery to 5% (not 0%) for the fist use, then charge and cycle 3-4 times to wake up the new battery.
The important point is to perform a full discharge and charge every other month to extend the battery life.
Do not connect adapter for a long time while using the battery. It may damage the battery.
Avoid artificial shocks, disassembly, crush or puncture. Do not dispose of it in fire or water.

All of our batteries are rigorously tested to meet or exceed the OEM specifications. The performance are the same or better than laptop original battery.
Battery Installation is easy, but we also recommend you to learn related installation video on the web in advance, or just find a repair technician for help.
Please be careful when install battery. Any damage caused by improper operation will be your own responsibility, hope understand.

Battery cannot be identified by your laptop or it doesn't seem to work. That may be caused by different situations. Please check by yourself first as below steps.
Could be caused by battery loose. Remove the battery and try to reinstall more than once.
May be due to conductive material damaged which the laptop motherboard and battery anode and cathode contact position, you can try to confirm it with your original battery.
Check whether the battery drive is in normal condition, if not, download the corresponding driver software to update.
Take out the battery and press the power button for about 15 seconds to consume the internal residual power (Do not connect the power cord), and then reinstall the battery. You can try several times.

BATTERY SPECIFICATION Note Before Purchasing Compatible Laptop Models(Use "Ctrl+F to find your model quickly) Battery Optimal Maintenance Installation Suggestion Issue Troubleshooting Methods