BOWEIRUI L20C4P71 Laptop Battery for ThinkPad X1 Carbon/Yoga

BOWEIRUI L20C4P71 is a 57Wh replacement Li‑ion laptop battery designed to restore full runtime to compatible Lenovo ThinkPad X1 Carbon and X1 Yoga 9th–11th generation models.

This direct-replacement battery (15.44V, 3695mAh) is built to match multiple Lenovo part numbers and restore portability without the wait for OEM service. It ships with matching installation tools and step-by-step instructions, passes industry safety standards, and includes customer support if you need help installing or troubleshooting the unit.

Which Lenovo models and part numbers does this battery replace?

The BOWEIRUI L20C4P71 is compatible with several recent ThinkPad X1 Carbon and X1 Yoga generations and replaces multiple Lenovo part numbers. It’s labeled as L20C4P71 and cross-references SB10T83217, 5B10W13974, L20M4P71, SB10T83216, L20D4P71, SB10T83218, L20L4P71, and similar service codes.

• ThinkPad X1 Carbon 9th Gen (2021) and 10th Gen (2022) models
• ThinkPad X1 Yoga 6th Gen (2021) and 7th Gen (2022) models
• Cross-compatible with the listed Lenovo part numbers for simple swap-in replacement

How long will the battery last and what capacity does it offer?

This L20C4P71 replacement provides 57Wh (3695mAh) at 15.44V, giving runtime similar to original factory batteries under comparable workloads. The pack is rated for up to roughly 500 recharge cycles over its usable life when charged and used under normal conditions.

• Capacity: 57Wh / 3695mAh at 15.44V for sustained laptop use
• Designed for about 500 recharge cycles with typical care
• Works with your laptop’s battery management system for accurate reporting

What safety and certification standards does the battery meet?

BOWEIRUI batteries are manufactured to meet CE, FCC, RoHS, and UL related standards and include internal circuit protection to guard against overcharge, overcurrent, and short circuits. The pack is engineered to fit the original battery bay and align with the laptop’s power management to maintain stable operation.

• Built-in protection circuits for safety and stability
• Manufactured to recognized CE/FCC/ROHS/UL guidelines
• Compatibility checks to ensure correct mechanical and electrical fit

Does installation require technical skills and what comes in the package?

Installation is straightforward for anyone comfortable removing the laptop’s back cover and swapping the battery connector. The package includes the L20C4P71 battery, a matching set of installation tools, and clear instructions to guide you through a safe replacement.

• Package contents: 1x L20C4P71 battery, installation tools, and instructions
• Customer support available 24/7 via email for installation questions
• Follow included steps to avoid voiding manufacturer warranties or damaging the laptop

Who is this for? If your ThinkPad X1 Carbon or X1 Yoga shows reduced runtime, fails to hold charge, or you need a quick, cost-effective alternative to OEM service, the BOWEIRUI L20C4P71 battery is made for professionals, students, and travelers who depend on consistent mobile power. It suits users who prefer a direct swap replacement that fits existing battery compartments and pairs with Lenovo charging systems while offering industry-standard safety and solid cycle life.