Laptop Battery for ASUS B31N1424, K401LB5010, A400U, A401L 11.4V 48Wh, Compatible with K401, A401 Series, 1-Year Warranty

**Product Overview**
This high-performance replacement battery is specifically designed for ASUS K401, A401 series laptops, including models like K401LB5010, A400U, and A401L. It uses premium-grade lithium-ion cells to deliver the same voltage ( 11.4V ) and capacity (48Wh) as the original ASUS B31N1424 battery, ensuring seamless compatibility and reliable performance.

**Important Voltage Warning**
Please confirm your original battery voltage is 11.4V before purchasing. Using an incorrect voltage battery may cause damage to your laptop or battery. If you are unsure, check the label on your original battery or contact us.

**Compatible Models & Part Numbers**
- ASUS B31N1424
- ASUS K401LB5010
- ASUS A400U
- ASUS A401L
- Also compatible with: K401 series (K401LB, K401LN, K401LD, etc. ) and A401 series (A401U, A401L, A401N, etc. )

**Specifications**
| Parameter | Value |
|-----------|-------|
| Battery Type | Li-ion |
| Voltage | 11.4V |
| Capacity | 48Wh / 4200mAh |
| Cell Count | 4 cells |
| Color | Black |
| Weight | Approx. 280g |
| Warranty | 1 Year |

**Comparison Table**
| Feature | Our Battery | Generic Battery |
|---------|-------------|----------------|
| Capacity | 48Wh (high) | Often 42Wh or lower |
| Voltage | 11.4V (exact match) | May vary |
| Protection | Full circuit protection | Limited or none |
| Warranty | 1 Year | Usually 6 months |
| Compatibility | Guaranteed fit for listed models | May require adapter or modification |

**Installation Tips**
1. Power off your laptop and unplug the AC adapter.
2. Remove the back cover (if applicable) or slide the battery release latch.
3. Disconnect the old battery cable and remove it gently.
4. Insert the new battery, connect the cable, and secure the cover.
5. Charge the battery fully before first use for optimal performance.
6. If the battery is not detected, check the connection or restart the laptop.

**Package Includes**
- 1 x Replacement Battery for ASUS B31N1424


**Note**
This is a compatible replacement battery, not an original ASUS product. It is manufactured to meet or exceed OEM specifications. Please ensure your laptop model is listed above before ordering. For any questions, contact our customer service team we are here to help.