Battery for ASUS X403M X503M X453M X553M P553M X503S F453 Series 11.4V 38Wh B21N1329 High Capacity, 2-Year Warranty

**Product Overview**
This high-performance replacement battery is designed specifically for ASUS X403M, X503M, X453M, X553M, P553M, X503S, and F453 series laptops. It uses the original B21N1329 battery model, ensuring seamless compatibility and reliable power delivery. Whether youre working, studying, or streaming, this battery provides the energy you need to stay productive on the go.

**Important Voltage Warning**
Please verify that your original batterys voltage is 11.4V before purchasing. Using an incorrect voltage battery may damage your laptop or cause malfunction. This battery is NOT compatible with 7.6V or 14.8V systems. If you are unsure, please check your original battery label or contact us for assistance.

**Compatibility List**
This battery works with the following ASUS laptop models (but not limited to):
- ASUS X403M Series
- ASUS X503M Series
- ASUS X453M Series
- ASUS X553M Series
- ASUS P553M Series
- ASUS X503S Series
- ASUS F453 Series

**Replacement Part Numbers**
B21N1329, B21N1329-1, B21N1329-2, B21N1329-3, 0B200-03060000, 0B200-03060100, 0B200-03060200, 0B200-03060300

**Specifications**
- Battery Type: Lithium-ion (Li-ion)
- Voltage: 11.4V
- Capacity: 38Wh / 3330mAh
- Color: Black
- Cell Quality: Grade A+
- Warranty: 2 Years

**Comparison Table**
| Feature | Our Battery | Generic/Cheap Battery |
|---------|-------------|----------------------|
| Cell Quality | Grade A+ | Unknown / Grade B |
| Voltage Accuracy | 11.4V ± 0.1V | May vary |
| Safety Protection | Overcharge, short circuit, overheat | Basic or none |
| Cycle Life | 500+ cycles | 200-300 cycles |
| Warranty | 2 Years | 6-12 months |

**Installation Tips**

1. Power off your laptop and unplug the AC adapter.

2. Remove the back cover (screws may be required keep them organized).

3. Locate the old battery and gently disconnect its cable from the motherboard.

4. Remove the old battery and insert the new one, aligning the connector properly.

5. Reconnect the cable, replace the back cover, and tighten screws.

6. Charge the battery fully before first use for optimal performance.

**Safety & Quality Assurance**
Each battery undergoes rigorous testing for voltage stability, capacity, and safety. Our smart protection circuit guards against overcharging, over-discharging, short circuits, and overheating. We take quality seriously your safety is our priority.

**Package Includes**
- 1 x Replacement Battery (B21N1329)
(with installation guide)

**Customer Support**
If you have any questions about compatibility, installation, or performance, please contact us. We are here to help you get the most out of your purchase.