New Battery for Dell Latitude 7390 7389 5289 2-in-1 Series 11.4V 57Wh K5XWW, Compatible with 0K5XWW, 451-BCNF, 492-BBCT 2-Year Warranty

**Important Voltage & Compatibility Warning**
Please confirm your original battery voltage is ** 11.4V ** before purchasing. This battery is NOT compatible with 7.6V or 15.2V models. Using an incorrect voltage battery may damage your laptop or cause charging failure.

**Compatible Dell Laptop Models**
- Dell Latitude 7390 2-in-1
- Dell Latitude 7389 2-in-1
- Dell Latitude 5289 2-in-1

**Replaces OEM Part Numbers**
K5XWW, 0K5XWW, 451-BCNF, 492-BBCT, 0F3R2C, 0G5V2N, 0K5XWW, 0F3R2C, 0G5V2N, 451-BCNF, 492-BBCT

**Product Specifications**

| Specification |

Details

|
|---------------|---------|
| Battery Type | Li-ion (Lithium-ion) |
| Voltage | 11.4V |
| Capacity | 57Wh / 5000mAh |
| Cell Count | 4 cells |
| Color | Black |
| Connector | 6-pin (original shape) |
| Dimensions | Approx. 270 x 70 x 7 mm |
| Weight | Approx. 280g |
| Certification | CE, FCC, RoHS |

**Comparison Table**

| Feature | Our Battery (57Wh) | Standard 42Wh Battery |
|---------|-------------------|----------------------|
| Runtime (typical) | Up to 8-10 hours | Up to 5-6 hours |
| Cycle Life | 500+ charge cycles | 300-400 cycles |
| Overcharge Protection | Yes | Varies |
| Warranty | 2 Years | 1 Year or less |

**Installation Tips**
1. Power off your laptop and disconnect the AC adapter.
2. Remove the bottom case screws (Phillips #0) and carefully lift the base cover.
3. Disconnect the old battery cable from the motherboard.
4. Remove the screws securing the old battery and lift it out.
5. Insert the new battery, reconnect the cable, and replace the bottom cover.
6. Charge the battery fully before first use for optimal performance.

**Note: ** If your laptop does not charge or power on after installation, please check the battery connector is fully seated and the voltage matches your original battery ( 11.4V ).

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

- 1 x Installation Guide

**Warranty & Support**
We offer a 2-year warranty against manufacturing defects. If you have any issues, please contact us via eBay/Newegg messaging we will respond within 24 hours.