L21B4P71 Laptop Battery Replacement for Lenovo ThinkPad T14s Gen 3 2022 Gen 4 2023 Series SB10W51978 5B10W51877 SB11M89834 SB11M89832 5B11M90031 15.36V 57Wh 3711mAh

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Lithium-ion batteries, rechargeable batteries for portable electronics,100% new from Manufacturer. Adopt strict quality control standards, reliable and high-quality batteries. Meet the OEMs specifications, be stable and last long, Lower Power Consumption, provide stronger power for your laptop.

ModelL21B4P71 Battery
TypeLi-ion
Voltage15.36V
Capacity57Wh 3711mAh
Condition : 100% New from Manufacturer, Grade A Cell
Packing Included:

1* L21B4P71 battery
1* Instruction manual
Meet the OEM. CE / FCC / RoHS certified.
Easy to install.
Up to 1000+ recharge cycles over the life of the battery.
Easily deal with various practical environments and bring you a stronger battery life experience.
Method 1: Use System Information to find your laptop model

Step 1: Press " Windows + R " to open the Run window.
Step 2: Type " msinfo32 " in the empty box and click " OK " to open System Information.
Step 3: Keep in the " System Summary " section and you will find the " System Model " item in the right pane.
Method 2: Open the back cover of the laptop and confirm the battery type and capacity, as well as the model of the laptop.

Step 1: Turn off the laptop and unplug the power cord (to prevent electric shock)
Step 2: Remove the back panel with a screwdriver. (Please proceed with care to avoid damage to the laptop's components.)
Step 3: Disconnect the cable connected to the battery and remove it. After that, you can check the specifications of your battery.
Replacement Part Number:

L21B4P71 SB11M89834 5B11M90033 SB10W51978 5B11M90033 L21L4P73 SB11M89831 5B11M90030 SB10W51978 5B10W51874
L21M4P75 SB11M89832 5B11M90031 SB10W51976 5B10W51875 L21D4P74 SB11M89833 5B11M90032 SB10W51977 5B10W51876
Compatible Models: (use "Ctrl+F" to find your model quickly)

for Lenovo T14s Gen 3 (Type: 21BR 21BS 21CQ 21CR) Series
for Lenovo T14s Gen 4 (Type: 21F6 21F7 21F8 21F9) Series
Note: For more accrate, please check the part number of your original battery.
Manual calibration, The steps are:
1) Shut down, plug in the power adapter to fully charge the battery. If the battery is full, you can proceed directly to the next step.
2) Unplug the power adapter, turn on the battery, and let the battery automatically discharge until the computer automatically shuts down. During this period, it is best not to do any computer operations.
3) Plug in the battery adapter and fully charge the battery. This process is OK if it is turned on or not.
To borrow software, such as batteryMon :
1) Install the battery, plug in the power adapter, and power on. Run Batterymon and click the start button. After charging, shut down and unplug the adapter.
2) Restart and run Batterymon. Close all applications, adjust the power plan to turn off the screen for 1 minute and never go to sleep, and then slowly wait for the battery to discharge until it automatically shuts down. Repeat the operation 3 times.
3. The software is still used, but the battery manager on the official website is used, just follow the instructions.
Besides, The software is still used, but the battery manager on the official website is used, just follow the instructions.
Use the battery that comes with BIOS to calibrate:
(1) After booting, quickly press the "F2" key to enter the BIOS menu; use the left and right direction keys to select and enter the Power menu.
(2) Enter the Power menu, you can see the "Start Battery Calibration" option, select it and press the Enter key to execute.
(3) At this time, the screen will turn blue, and there will be a prompt in English, requiring that the notebook's power adapter be plugg