Genuine L21B4P71 Battery Replacement for Lenovo ThinkPad T14s Gen 3 and Gen 4
The L21B4P71 is a genuine replacement battery for the Lenovo ThinkPad T14s Gen 3 and T14s Gen 4 laptops. It’s a power replacement battery for those who have a dead or failing original battery (i.e. one that has lost its capacity, has a significantly reduced runtime or just plain doesn’t work any more after a period of time).
This is a Li-ion battery with a 57Wh capacity. It’s designed to provide reliable power for business use, professional work, travel and general mobile computing. It’s a battery that matches the original battery specification of the relevant ThinkPad T14s models.
The battery is compatible with a number of different Lenovo battery part numbers (L21B4P71, L21M4P75, L21C4P73, L21L4P73, L21D4P74) and these are the ones typically found on the same ThinkPad T14s platform. As always, check your original battery part number prior to purchase to make sure you get the correct replacement.
Product Specifications
| Specification | Details |
|---|---|
| Product Type | Laptop Replacement Battery |
| Battery Model | L21B4P71 |
| Compatible Models | Lenovo ThinkPad T14s Gen 3 / Gen 4 |
| Battery Chemistry | Li-ion |
| Voltage | 15.36V |
| Capacity | 57Wh |
| Battery Color | Black |
| Condition | Genuine, Brand New |
| Warranty | 12 Months |
| Package Includes | 1 × Battery |
Compatible Battery Part Numbers
This battery replaces or is compatible with the following part numbers:
- L21B4P71
- L21M4P75
- L21C4P73
- L21L4P73
- L21D4P74
Additional compatible part numbers:
- SB10W51976
- 5B10W51875
- SB11M89832
- 5B11M90031
- SB10W51975
- 5B10W51874
- SB11M89831
- 5B11M90030
- SB10W51977
- 5B10W51876
- SB11M89833
- 5B11M90032
- SB10W51978
- 5B10W51877
- SB11M89834
- 5B11M90033
Compatible Lenovo Laptop Models
Designed for:
Lenovo ThinkPad T14s Gen 3 Series
Compatible Type Numbers:
- 21BR
- 21BS
- 21CQ
- 21CR
Lenovo ThinkPad T14s Gen 4 Series
Compatible Type Numbers:
- 21F6
- 21F7
- 21F8
- 21F9
Important Compatibility Information
Lenovo ThinkPad models may use different battery configurations depending on the production batch and regional version.
Before purchasing, please check:
- Your original battery part number
- Battery voltage and capacity
- Laptop model and machine type number
- Battery connector and physical design
The listed models represent common compatible devices. If your original battery number or laptop model is not shown, it may still be compatible. Please contact us to confirm before ordering.
Note: L21B4P71, L21M4P75, L21C4P73, L21L4P73, and L21D4P74 are listed as compatible battery models. The supplied battery model may vary depending on stock availability.
Restore Your ThinkPad’s Mobile Performance
A laptop battery tends to lose its capacity to store energy as a result of repeated charging and discharging cycles, and indications that a battery is ageing include a reduced operating time, unexpected shutdowns, or the need to charge it frequently.
Installing a new battery in place of the old one with a compatible Lenovo ThinkPad T14s battery replacement can help restore reliable mobile power for business people, professionals, and anyone else who needs their laptop when they are away from a power outlet.
This replacement battery, which has a 57Wh capacity and is suitable for use with the ThinkPad T14s Gen 3 and Gen 4 models, is a sensible option if you want to keep your laptop portable and productive on a daily basis.
Package Includes
- 1 × Genuine L21B4P71 / Compatible ThinkPad T14s Battery
Warranty
Includes a 12-month warranty for product quality assurance and customer support.
