Laptop Battery for ASUS A456U X456U K456U F456U Series, C21N1508, 11.4V 38Wh, High Capacity 4200mAh, 2-Year Warranty

**Product Overview**
This high-performance replacement battery is specifically designed for ASUS A456U, X456U, K456U, and F456U series laptops. It uses premium Grade A lithium-ion cells to deliver stable power output and extended battery life, making it ideal for work, study, and entertainment on the go.

**Important Voltage Warning**
Please verify your original battery voltage before purchasing. This battery is 11.4V. Using an incorrect voltage (e. g., 7.6V or 14.8V ) may cause damage to your laptop or battery. If your original battery is 11.4V, this product is fully compatible.

**Compatible Models & Part Numbers**
- Laptop Models: ASUS A456U, X456U, K456U, F456U, A456UF, X456UR, K456UB, F456UA
- Replacement Part Number: C21N1508
- Also compatible with: 0B200-03020100, 0B200-03020200, C21N1508-1, C21N1508-2

**Specifications Table**
| Parameter | Value |
|-----------|-------|
| Battery Type | Li-ion |
| Voltage | 11.4V |
| Capacity | 4200mAh / 38Wh |
| Cell Quality | Grade A |
| Color | Black |
| Weight | Approx. 250g |
| Warranty | 2 Years |

**Comparison Table: Original vs. Replacement**
| Feature | Original ASUS Battery | Our Replacement |
|---------|----------------------|-----------------|
| Voltage | 11.4V | 11.4V (Exact Match) |
| Capacity | 38Wh | 38Wh (Same or Higher) |
| Cell Grade | Standard | Grade A (Higher Quality) |
| Safety Protection | Basic | Overcharge/Discharge/Short Circuit/Temp |
| Warranty | 1 Year | 2 Years |

**Installation Tips**
1. Shut down your laptop and unplug the AC adapter.
2. Remove the bottom cover (screws may be required).
3. Disconnect the old battery cable and remove the battery.
4. Insert the new battery, reconnect 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 and restart the laptop.

**Package Includes**
- 1 x Replacement Battery (C21N1508)
-
- 1 x Installation Guide

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