Battery for Dell Latitude 5420 5520 P104F P137G RJ40G WY9DX 11.4V 54Wh, High Capacity, 1-Year Warranty

**Product Overview**
Upgrade your Dell Latitude 5420 or 5520 with this high-performance replacement battery. Designed to meet or exceed OEM specifications, it provides a reliable power source for your daily tasks, whether youre working remotely, attending classes, or traveling. Say goodbye to sudden shutdowns and enjoy uninterrupted productivity.

**Important Voltage Warning**
Please verify your original batterys voltage before purchasing. This battery is rated at ** 11.4V **. If your original battery is 7.6V or 15.2V, this unit will NOT be compatible and may cause damage. Always check the sticker on your old battery for exact voltage and model number.

**Compatible Models & Part Numbers**
This battery is designed for the following
Dell Latitude models:
- Dell Latitude 5420
- Dell Latitude 5520

Replaces OEM part numbers:
P104F, P137G, RJ40G, WY9DX, 0P104F, 0P137G, 0RJ40G, 0WY9DX, and other compatible variants.

**Specifications Table**

| Specification |

Details

|
|---------------|---------|
| Battery Type | Lithium-Ion (Li-ion) |
| Voltage | 11.4V |
| Capacity | 54Wh / 4800mAh |
| Cells | 4-cell |
| Color | Black |
| Weight | Approx. 280g |
| Warranty | 12 Months |

**Comparison Table Original vs. Replacement**

| Feature | Original Dell Battery | Our Replacement Battery |
|---------|----------------------|-------------------------|
| Voltage | 11.4V | 11.4V (identical) |
| Capacity | 54Wh | 54Wh (same) |
| Cell Quality | OEM Grade A | Premium Grade A (tested) |
| Price | High | Affordable |
| Warranty | 1 year (limited) | 1 year (full coverage) |

**Installation Tips**
1. Power off your laptop and disconnect the AC adapter.
2. Remove the bottom panel screws (refer to your laptop manual).
3. Gently disconnect the old battery cable and lift it out.
4. Insert the new battery, connect the cable, and secure the panel.
5. Charge the battery fully before first use for optimal performance.

**Safety & Quality**
Our batteries undergo rigorous testing for short-circuit, over-voltage, over-current, and temperature protection. CE, FCC, and RoHS certified for safe use.

**Package Includes**
- 1x Replacement Battery
- (digital)

**Note**
Compatibility is not guaranteed for models outside the listed Latitude 5420/5520 series. If unsure, please contact us with your laptop service tag or original battery part number.