L21M4P76 Laptop Battery 49.5Wh 6400mAh 4-Cell 7.74V Compatible with Lenovo ThinkPad X13s 1st Gen 21BX 21BY Series L21C4P73

SpecificationsBattery Model: L21M4P76 / Voltage: 7.74V / Capacity: 49.5Wh 6400mAh 4-cell / Color: Black / Condition: Brand New.
Replace Part Number L21M4P76 SB10W51979 5B10W51878 SB11M89880 5B11M90079 SB11M89881 5B11M90080 L21C4P73 SB10W51980 5B10W51879 SB10W51981 5B10W51880 SB11M89882 5B11M90081
Compatible with Laptop Models for Lenovo ThinkPad X13s 1st Gen (Type: 21BX 21BY) series
Purchase SkillsPlease open the back cover of the laptop before ordering and make sure that the original battery model is consistent with the listing. After getting the battery, please install the battery correctly, make sure that the battery connector is firmly connected to the laptop motherboard, and use the original charger to charge the laptop.Discharge the new battery to 5% (not 0%), then charge and cycle 3-4 times to wake up the new battery.
EPYOBW PromiseAll EPYOBW's batteries are certificated by UL/CE/FCC/RoHS. Our batteries are tested by strict quality control standards to ensure that the capacity is true, stable current, low self-discharge.And we also have short circuit, overheat, and overload protections. We are confident in the performance of replacement batteries and professional service.