Laptop Battery for HP EliteBook 840 G3/G4/G5, MB04XL HSTNN-UB6X 844204-850 843538-541, 11.4V 48Wh, High Capacity, 2-Year Warranty

**Compatible Models & Part Numbers**
This battery is specifically designed for the following HP EliteBook series and replaces these original part numbers:

**Compatible Laptop Models: **
HP EliteBook 840 G3, 840 G4, 840 G5, 850 G3, 850 G4, 850 G5, 1030 G1, 1040 G3, 1040 G4, 1040 G5, x360 1020 G2, x360 1030 G2, x360 1030 G3, x360 1040 G5, ZBook 14u G4, ZBook 14u G5, ZBook 15u G4, ZBook 15u G5

**Replacement Part Numbers: **
MB04XL, HSTNN-UB6X, 844204-850, 843538-541, 844204-2X1, 843538-2X1, 843538-541, 844204-541, 844204-851, 843538-851, HSTNN-LB6X, HSTNN-DB6X, HSTNN-IB6X, 844204-001, 843538-001, 844204-005, 843538-005

** Important Voltage Warning**
Please confirm your original battery voltage is ** 11.4V ** (not 11.55V or 15.2V ). Using an incorrect voltage may damage your laptop or cause charging failure. This battery is **NOT** compatible with 11.55V or 15.2V models.

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**Specifications Table**

| Parameter | Value |
|-----------|-------|
| Battery Type | Li-ion (Lithium-ion) |
| Voltage | 11.4V |
| Capacity | 4200mAh / 48Wh |
| Cell Quality | Grade A |
| Color | Black |
| Weight | Approx. 220g |
| Dimensions | 20.5 x 8.5 x 0.8 cm |
| Warranty | 2 Years |

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**Comparison Table: Original vs. Our Replacement**

| Feature | Original HP Battery | Our Replacement |
|---------|-------------------|----------------|
| Cell Grade | A | A (Same quality) |
| Capacity | 48Wh | 48Wh (Equal) |
| Safety Protection | Yes | Yes (Overcharge, short circuit, etc. ) |
| Price | High | Affordable |
| Warranty | 1 year | 2 years |
| Compatibility | Limited to original parts | Wide range of models |

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**Installation Tips**
1. **Power off** your laptop and unplug the AC adapter.

2. Remove the bottom cover (screws may vary by model).

3. Disconnect the old battery cable and gently lift it out.

4. Insert the new battery, connect the cable, and replace the cover.

5. Charge the battery fully before first use (about 3-4 hours).

6. For best performance, calibrate
every 2-3 months: fully charge, then discharge to 5%, then recharge to 100%.

**Note: ** If your laptop does not recognize the battery or shows a warning, please check the connection and ensure the voltage matches. Contact us if issues persist.

**Package Includes: **
1 x Replacement Battery (Battery only, screws and tools not included)

**Why Choose Us? **
- 100% compatible with listed HP models
- Rigorous quality testing before shipping
- Fast dispatch from local warehouse
- Friendly customer support available 24/7

Upgrade your HP EliteBook with a reliable, high-performance battery today!