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

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Step 1: Press the "Windows + R" keys to pop up the window.
Step 2: Enter "msinfo32" and click "OK".
Step 3: View the "System Model" in the right pane.
Step 1: Shut down the laptop and unplug the power cord.
Step 2: Carefully use a screwdriver to remove the back panel to prevent damage to laptop components.
Step 3: Disconnect the cable connected to the battery, then you can check the model number and specific specifications on the battery.
Brand new battery
Rechargeable up to 1000+ times
Overcharging protection
Overheating protection
Short circuit protection
professional
Battery Model: L21M4P76
Capacity: 49.5Wh 6400mAh 4-Cell
Voltage: 7.74V
Battery Type: Li-ion
Condition: Brand New
Replace Part Number:
L21M4P76 SB10W51979 5B10W51878 SB11M89880 5B11M90079 SB11M89881 5B11M90080
L21C4P73 SB10W51980 5B10W51879 SB10W51981 5B10W51880 SB11M89882 5B11M90081
Compatible Laptop Models:
for Lenovo ThinkPad X13s 1st Gen (Type: 21BX 21BY) series
Brand new battery
100% compatible
Meet OEM specifications
Rechargeable up to 1000+ times
capacity is true, stable current, low self-discharge
short circuit, overheat, and overload protections
Multiple protection
Strong battery life
Good "core" quality
After getting the battery, please install the battery correctly, make sure that the battery connector is firmly connected to the laptop motherboard, and start charging the laptop. Discharge the new battery to 5% (not 0%), then charge and cycle 3-4 times to wake up the new battery.
Remember not to discharge the battery to 0%, otherwise the battery will be easily damaged.
After the battery is exhausted, please charge it in time. If it is not charged for a long time, the battery may be damaged.
If the battery is not used for a long time, it needs to be charged to more than 70% for storage. The storage time should not exceed 3 months.
If you often use it with a charger, please use the battery power regularly and use it more than once a week.
Please use original chargers. Inferior chargers will affect the normal charging of the battery.
Regularly clean the fan dust to increase the heat dissipation effect and reduce power consumption, which can effectively extend the battery life.

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