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L20C4P71 Laptop Battery 57Wh 4-Cell Compatible with Lenovo ThinkPad X1 Carbon 9th Gen 10th Gen 11th Gen/ThinkPad X1 Yoga 6th Gen 7th Gen 8th Gen Series L20M4P71 L20D4P71 L20L4P71

Specifications: Battery Model: L20C4P71. Voltage: 15.48V. Capacity: 57Wh 3695mAh 4-Cell. Color: Black. Condition: Brand New. Replaces Part Numbers: L20C4P71, SB10T83217, 5B10W13974, L20L4P71, SB10T83215, 5B10W13972, L20M4P71, SB10T83216, 5B10W13973, L20D4P71, SB10T83218, 5B10W13975. Compatible Laptop Models: Lenovo ThinkPad X1 Carbon 9th Gen (Type 20XW, 20XX) series; Lenovo ThinkPad X1 Carbon 10th Gen (Type 21CB, 21CC) series; Lenovo ThinkPad X1 Carbon 11th Gen (Type 21HM, 21HN) series; Lenovo ThinkPad X1 Yoga 6th Gen (Type 20XY, 20Y0) series; Lenovo ThinkPad X1 Yoga 7th Gen (Type 21CD, 21CE) series; Lenovo ThinkPad X1 Yoga 8th Gen (Type 21HQ, 21HR) series. Installation & Calibration: Prior to ordering, open your laptop's back cover to check that the original battery model matches those listed. After receiving the battery, ensure proper installation. Verify the battery connector is firmly attached to the laptop's motherboard and use the original charger. For best initial performance, discharge the new battery to about 5% (not 0%), then charge it fully. Repeating this cycle 3-4 times aids in calibrating the new battery. Product Standards: All batteries are certified to meet UL, CE, FCC, and RoHS standards. They pass strict quality control tests to ensure true capacity, stable current output, and low self-discharge. Built-in safety features provide protection against short circuits, overheating, and overload.

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First Listed on Newegg	June 13, 2026

Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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