Laptop Battery for Lenovo ThinkPad T14 Gen 3 / T14s Gen 3, TP00135A, L21M4P71, 11.55V 52.5Wh, High Capacity, 1-Year Warranty

**Product Overview**
Upgrade or replace your aging laptop battery with this premium replacement for Lenovo ThinkPad T14 Gen 3 / T14s Gen 3. Designed to match original specifications, it delivers consistent power output and extended runtime for work, study, or entertainment.

**Important Voltage Warning**
Please confirm your original battery voltage before purchasing. This battery is rated at 11.55V. Using an incorrect voltage may cause charging issues or damage your device. Check your current battery label for voltage and model number.

**Compatible Models & Part Numbers**
- Laptop Models: Lenovo ThinkPad T14 Gen 3, T14s Gen 3 (Intel & AMD versions)
- OEM Battery Part Numbers: TP00135A, L21M4P71, L21C4P71, L21D4P71, L21E4P71, L21F4P71, 5B10W13937, 5B10W13938
- Note: Not compatible with T14 Gen 1, Gen 2, or non-T14 series.

**Specifications Table**
| Parameter | Value |
|-----------|-------|
| Battery Type | Li-ion |
| Voltage | 11.55V |
| Capacity | 52.5W h / 4550mAh |
| Cells | 4-cell |
| Color | Black |
| Weight | Approx. 250g |
| Warranty | 12 Months |

**Comparison Table: Original vs Replacement**
| Feature | Original Lenovo Battery | Our Replacement |
|---------|------------------------|-----------------|
| Voltage | 11.55V | 11.55V (identical) |
| Capacity | 52.5W h | 52.5W h (same) |
| Safety Certifications | Yes | Yes (CE, RoHS) |
| Price | High | Affordable |
| Warranty | 1 year | 1 year |

**Installation Tips**
1. Power off your laptop and unplug the AC adapter.
2. Remove the bottom case screws (refer to your laptop manual).
3. Disconnect the old battery cable and gently lift it out.
4. Insert the new battery, connect the cable, and secure the case.
5. Charge fully before first use for optimal performance.
6. If the battery is not recognized, check the connector alignment and restart the system.

**Package Includes**
- 1x Replacement Battery
-


**Quality Assurance**
Each battery undergoes rigorous testing for capacity, voltage stability, and safety. We stand behind our product with a 12-month warranty and dedicated customer support. If you have any questions, feel free to contact us.