L20M4P71 L20C4P71 Laptop Battery Replacement for Lenovo ThinkPad X1 Carbon 9th 10th 11th Gen 2021 2022, ThinkPad X1 Yoga 6th 7th 8th Gen 2021 2022 Series L20D4P71 L20L4P71 SB10T83217 5B10W13972 57Wh

Compatible Part Number L20C4P71 L20L4P71 L20M4P71 L20D4P71 SB10T83215 SB10T83216 SB10T83217 5B10W13972 5B10W13973 5B10W13974 5B10W13975 Compatible Model Replacement for Lenovo ThinkPad X1 Yoga 2021 Series; Compatible Model Replacement for Lenovo ThinkPad X1 Yoga 2022 Series; Compatible Model Replacement for Lenovo ThinkPad X1 Yoga 2021 6th Gen (Type 20XY, 20Y0) Series; Compatible Model Replacement for Dell Precision 7780 Series. Compatible Model Replacement for Lenovo ThinkPad X1 Yoga 2023 8th Gen (Type 21HQ, 21HR) Series; Compatible Model Replacement for Lenovo ThinkPad X1 Carbon 2021 Series; Compatible Model Replacement for Lenovo ThinkPad X1 Carbon 2022 Series; Compatible Model Replacement for Lenovo ThinkPad X1 Carbon 2021 9th Gen (Type 20XW, 20XX) Series; Compatible Model Replacement for Lenovo ThinkPad X1 Carbon 2022 10th Gen (Type 21CB, 21CC) Series; Compatible Model Replacement for Lenovo ThinkPad X1 Carbon 2023 11th Gen (Type 21HM, 21HN) Series. Attention If you install the battery, you find that the laptop cannot detect the battery or the battery level cannot be displayed normally. Please check whether the battery cable is installed properly. Sometimes the battery cannot be charged because the cable is not fixed properly. What do I need to be aware of when I receive a new laptop battery?
Check appearance, model, manual. Do 5-6 full charge-discharge cycles to activate. Store long-term at 50%-60% in cool dry place; check every 2-3 months & recharge if needed. These steps extend battery life & reliability.

What should I do if laptop won't boot up after installing a new battery?
1. Check battery seated & contacts clean. 2. Run laptop on charger alone (battery out). 3. If charger works, charge new battery 30 mins then boot with battery. 4. Reset BIOS/EC (hold power 30s). 5. Reinstall old battery to verify laptop hardware.

How should I do if the battery is not recognised?
Update BIOS to latest version. Power off, disconnect battery (and adapter), hold power button 20s, reconnect battery and adapter, reboot. If still not recognised, reseat battery and clean contacts.

What should I do if the battery expands?
1. Power off & unplug laptop. 2. Do not charge or use. 3. In ventilated area, remove swollen battery carefully, avoid pressing or puncturing.

What can you do if you are not satisfied with the battery?
Please use Amazon's messaging system with your order details. We are committed to your satisfaction and will do our best to help resolve any issue.

Battery Installation Guidelines
1.Prepare Before Installation: While installing a battery is generally straightforward, it is recommended to watch online installation tutorials for your specific laptop model or seek assistance from a professional.
2.Follow Installation Procedures: Handle all components with care during installation. Be particularly gentle with the battery connector on the laptop motherboard; do not use excessive force. Any damage caused by improper operation is the user's responsibility.
3.If the New Battery Doesn't Charge: If the battery isn't charging after installation, try a power reset: remove the battery, unplug the charger, hold the power button for 15 seconds, and then reinstall the battery. Repeat this process if necessary.
Battery Identification Troubleshooting Guide
1.Check the Connection: A loose battery is a common cause. Remove the battery and reinstall it, ensuring the connector is firmly seated in the motherboard interface.
2.Inspect Conductive Components: The conductive materials on the laptop's battery contact points can become damaged. Compare with an original battery to confirm (if the original battery works, the conductive components are likely the issue).
3.Update the Battery Driver: Check the device's driver status. If the battery driver is malfunctioning, download and install the latest driver for your specif